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Detalii evaluare #64561576
Rezumat problemă
#2876
În vacanță, Andrei și cu prietenii lui doresc să construiască împreună cât mai multe zmeie. Analizând materialele au constatat că au la dispoziție doar N metri de sfoară.
Au căutat pe internet tutoriale și au aflat că pentru fiecare zmeu sunt necesare câte două bucăți de sfoară de M metri. Astfel, având la dispoziție cei N metri de sfoară, pot construi maxim Z zmeie.
Scrieți un program care să determine:
a) Care este numărul maxim de zmeie care se pot construi;
b) Câți metri de sfoară le-ar mai fi trebuit lui Andrei și prietenilor să poată construi încă un zmeu.
OLI 2018 TIMIS - clasele V-VI
Keresztes Luminița (luminita_K) Detalii
| Problema | Zmeu | Operații I/O |
zmeu.in/zmeu.out
|
|---|---|---|---|
| Limita timp | 0.5 secunde | Limita memorie |
Total: 2 MB
/
Stivă 2 MB
|
| Id soluție | #64561576 | Utilizator |
Gheorghe Mircea regele ceapa (mircea_3456)
|
| Fișier | zmeu.cpp | Dimensiune | 251 B |
| Data încărcării | 14 Mai 2026, 12:49 | Scor/rezultat | Eroare de compilare |
Evaluare
Mesaj compilare
zmeu.cpp: In function ‘int main()’: zmeu.cpp:8:11: error: no match for ‘operator>>’ (operand types are ‘std::basic_istream<char>::__istream_type’ {aka ‘std::basic_istream<char>’} and ‘long long int’) 8 | fin>>a>>(b*2); | ~~~~~~^~~~~~~ | | | | | long long int | std::basic_istream<char>::__istream_type {aka std::basic_istream<char>} In file included from /usr/include/c++/13/fstream:40, from zmeu.cpp:1: /usr/include/c++/13/istream:325:7: note: candidate: ‘std::basic_istream<_CharT, _Traits>::__istream_type& std::basic_istream<_CharT, _Traits>::operator>>(void*&) [with _CharT = char; _Traits = std::char_traits<char>; __istream_type = std::basic_istream<char>]’ (near match) 325 | operator>>(void*& __p) | ^~~~~~~~ /usr/include/c++/13/istream:325:7: note: conversion of argument 1 would be ill-formed: zmeu.cpp:8:15: error: invalid conversion from ‘long long int’ to ‘void*’ [-fpermissive] 8 | fin>>a>>(b*2); | ~~^~~ | | | long long int zmeu.cpp:8:15: error: cannot bind rvalue ‘(void*)(b * 2)’ to ‘void*&’ /usr/include/c++/13/istream:224:7: note: candidate: ‘std::basic_istream<_CharT, _Traits>::__istream_type& std::basic_istream<_CharT, _Traits>::operator>>(long double&) [with _CharT = char; _Traits = std::char_traits<char>; __istream_type = std::basic_istream<char>]’ (near match) 224 | operator>>(long double& __f) | ^~~~~~~~ /usr/include/c++/13/istream:224:7: note: conversion of argument 1 would be ill-formed: zmeu.cpp:8:15: error: cannot bind non-const lvalue reference of type ‘long double&’ to a value of type ‘long long int’ 8 | fin>>a>>(b*2); | ~~^~~ /usr/include/c++/13/istream:220:7: note: candidate: ‘std::basic_istream<_CharT, _Traits>::__istream_type& std::basic_istream<_CharT, _Traits>::operator>>(double&) [with _CharT = char; _Traits = std::char_traits<char>; __istream_type = std::basic_istream<char>]’ (near match) 220 | operator>>(double& __f) | ^~~~~~~~ /usr/include/c++/13/istream:220:7: note: conversion of argument 1 would be ill-formed: zmeu.cpp:8:15: error: cannot bind non-const lvalue reference of type ‘double&’ to a value of type ‘long long int’ 8 | fin>>a>>(b*2); | ~~^~~ /usr/include/c++/13/istream:216:7: note: candidate: ‘std::basic_istream<_CharT, _Traits>::__istream_type& std::basic_istream<_CharT, _Traits>::operator>>(float&) [with _CharT = char; _Traits = std::char_traits<char>; __istream_type = std::basic_istream<char>]’ (near match) 216 | operator>>(float& __f) | ^~~~~~~~ /usr/include/c++/13/istream:216:7: note: conversion of argument 1 would be ill-formed: zmeu.cpp:8:15: error: cannot bind non-const lvalue reference of type ‘float&’ to a value of type ‘long long int’ 8 | fin>>a>>(b*2); | ~~^~~ /usr/include/c++/13/istream:201:7: note: candidate: ‘std::basic_istream<_CharT, _Traits>::__istream_type& std::basic_istream<_CharT, _Traits>::operator>>(long long unsigned int&) [with _CharT = char; _Traits = std::char_traits<char>; __istream_type = std::basic_istream<char>]’ (near match) 201 | operator>>(unsigned long long& __n) | ^~~~~~~~ /usr/include/c++/13/istream:201:7: note: conversion of argument 1 would be ill-formed: zmeu.cpp:8:15: error: cannot bind non-const lvalue reference of type ‘long long unsigned int&’ to a value of type ‘long long int’ 8 | fin>>a>>(b*2); | ~~^~~ /usr/include/c++/13/istream:197:7: note: candidate: ‘std::basic_istream<_CharT, _Traits>::__istream_type& std::basic_istream<_CharT, _Traits>::operator>>(long long int&) [with _CharT = char; _Traits = std::char_traits<char>; __istream_type = std::basic_istream<char>]’ (near match) 197 | operator>>(long long& __n) | ^~~~~~~~ /usr/include/c++/13/istream:197:7: note: conversion of argument 1 would be ill-formed: zmeu.cpp:8:15: error: cannot bind non-const lvalue reference of type ‘long long int&’ to an rvalue of type ‘long long int’ 8 | fin>>a>>(b*2); | ~~^~~ /usr/include/c++/13/istream:192:7: note: candidate: ‘std::basic_istream<_CharT, _Traits>::__istream_type& std::basic_istream<_CharT, _Traits>::operator>>(long unsigned int&) [with _CharT = char; _Traits = std::char_traits<char>; __istream_type = std::basic_istream<char>]’ (near match) 192 | operator>>(unsigned long& __n) | ^~~~~~~~ /usr/include/c++/13/istream:192:7: note: conversion of argument 1 would be ill-formed: zmeu.cpp:8:15: error: cannot bind non-const lvalue reference of type ‘long unsigned int&’ to a value of type ‘long long int’ 8 | fin>>a>>(b*2); | ~~^~~ /usr/include/c++/13/istream:188:7: note: candidate: ‘std::basic_istream<_CharT, _Traits>::__istream_type& std::basic_istream<_CharT, _Traits>::operator>>(long int&) [with _CharT = char; _Traits = std::char_traits<char>; __istream_type = std::basic_istream<char>]’ (near match) 188 | operator>>(long& __n) | ^~~~~~~~ /usr/include/c++/13/istream:188:7: note: conversion of argument 1 would be ill-formed: zmeu.cpp:8:15: error: cannot bind non-const lvalue reference of type ‘long int&’ to a value of type ‘long long int’ 8 | fin>>a>>(b*2); | ~~^~~ /usr/include/c++/13/istream:184:7: note: candidate: ‘std::basic_istream<_CharT, _Traits>::__istream_type& std::basic_istream<_CharT, _Traits>::operator>>(unsigned int&) [with _CharT = char; _Traits = std::char_traits<char>; __istream_type = std::basic_istream<char>]’ (near match) 184 | operator>>(unsigned int& __n) | ^~~~~~~~ /usr/include/c++/13/istream:184:7: note: conversion of argument 1 would be ill-formed: zmeu.cpp:8:15: error: cannot bind non-const lvalue reference of type ‘unsigned int&’ to a value of type ‘long long int’ 8 | fin>>a>>(b*2); | ~~^~~ /usr/include/c++/13/istream:181:7: note: candidate: ‘std::basic_istream<_CharT, _Traits>& std::basic_istream<_CharT, _Traits>::operator>>(int&) [with _CharT = char; _Traits = std::char_traits<char>]’ (near match) 181 | operator>>(int& __n); | ^~~~~~~~ /usr/include/c++/13/istream:181:7: note: conversion of argument 1 would be ill-formed: zmeu.cpp:8:15: error: cannot bind non-const lvalue reference of type ‘int&’ to a value of type ‘long long int’ 8 | fin>>a>>(b*2); | ~~^~~ /usr/include/c++/13/istream:177:7: note: candidate: ‘std::basic_istream<_CharT, _Traits>::__istream_type& std::basic_istream<_CharT, _Traits>::operator>>(short unsigned int&) [with _CharT = char; _Traits = std::char_traits<char>; __istream_type = std::basic_istream<char>]’ (near match) 177 | operator>>(unsigned short& __n) | ^~~~~~~~ /usr/include/c++/13/istream:177:7: note: conversion of argument 1 would be ill-formed: zmeu.cpp:8:15: error: cannot bind non-const lvalue reference of type ‘short unsigned int&’ to a value of type ‘long long int’ 8 | fin>>a>>(b*2); | ~~^~~ /usr/include/c++/13/istream:174:7: note: candidate: ‘std::basic_istream<_CharT, _Traits>& std::basic_istream<_CharT, _Traits>::operator>>(short int&) [with _CharT = char; _Traits = std::char_traits<char>]’ (near match) 174 | operator>>(short& __n); | ^~~~~~~~ /usr/include/c++/13/istream:174:7: note: conversion of argument 1 would be ill-formed: zmeu.cpp:8:15: error: cannot bind non-const lvalue reference of type ‘short int&’ to a value of type ‘long long int’ 8 | fin>>a>>(b*2); | ~~^~~ /usr/include/c++/13/istream:170:7: note: candidate: ‘std::basic_istream<_CharT, _Traits>::__istream_type& std::basic_istream<_CharT, _Traits>::operator>>(bool&) [with _CharT = char; _Traits = std::char_traits<char>; __istream_type = std::basic_istream<char>]’ (near match) 170 | operator>>(bool& __n) | ^~~~~~~~ /usr/include/c++/13/istream:170:7: note: conversion of argument 1 would be ill-formed: zmeu.cpp:8:15: warning: ‘*’ in boolean context, suggest ‘&&’ instead [-Wint-in-bool-context] 8 | fin>>a>>(b*2); | ~~^~~ zmeu.cpp:8:15: error: cannot bind non-const lvalue reference of type ‘bool&’ to a value of type ‘long long int’ /usr/include/c++/13/istream:122:7: note: candidate: ‘std::basic_istream<_CharT, _Traits>::__istream_type& std::basic_istream<_CharT, _Traits>::operator>>(__istream_type& (*)(__istream_type&)) [with _CharT = char; _Traits = std::char_traits<char>; __istream_type = std::basic_istream<char>]’ (near match) 122 | operator>>(__istream_type& (*__pf)(__istream_type&)) | ^~~~~~~~ /usr/include/c++/13/istream:122:7: note: conversion of argument 1 would be ill-formed: zmeu.cpp:8:15: error: invalid conversion from ‘long long int’ to ‘std::basic_istream<char>::__istream_type& (*)(std::basic_istream<char>::__istream_type&)’ {aka ‘std::basic_istream<char>& (*)(std::basic_istream<char>&)’} [-fpermissive] 8 | fin>>a>>(b*2); | ~~^~~ | | | long long int /usr/include/c++/13/istream:126:7: note: candidate: ‘std::basic_istream<_CharT, _Traits>::__istream_type& std::basic_istream<_CharT, _Traits>::operator>>(__ios_type& (*)(__ios_type&)) [with _CharT = char; _Traits = std::char_traits<char>; __istream_type = std::basic_istream<char>; __ios_type = std::basic_ios<char>]’ (near match) 126 | operator>>(__ios_type& (*__pf)(__ios_type&)) | ^~~~~~~~ /usr/include/c++/13/istream:126:7: note: conversion of argument 1 would be ill-formed: zmeu.cpp:8:15: error: invalid conversion from ‘long long int’ to ‘std::basic_istream<char>::__ios_type& (*)(std::basic_istream<char>::__ios_type&)’ {aka ‘std::basic_ios<char>& (*)(std::basic_ios<char>&)’} [-fpermissive] 8 | fin>>a>>(b*2); | ~~^~~ | | | long long int /usr/include/c++/13/istream:133:7: note: candidate: ‘std::basic_istream<_CharT, _Traits>::__istream_type& std::basic_istream<_CharT, _Traits>::operator>>(std::ios_base& (*)(std::ios_base&)) [with _CharT = char; _Traits = std::char_traits<char>; __istream_type = std::basic_istream<char>]’ (near match) 133 | operator>>(ios_base& (*__pf)(ios_base&)) | ^~~~~~~~ /usr/include/c++/13/istream:133:7: note: conversion of argument 1 would be ill-formed: zmeu.cpp:8:15: error: invalid conversion from ‘long long int’ to ‘std::ios_base& (*)(std::ios_base&)’ [-fpermissive] 8 | fin>>a>>(b*2); | ~~^~~ | | | long long int /usr/include/c++/13/istream:349:7: note: candidate: ‘std::basic_istream<_CharT, _Traits>& std::basic_istream<_CharT, _Traits>::operator>>(__streambuf_type*) [with _CharT = char; _Traits = std::char_traits<char>; __streambuf_type = std::basic_streambuf<char>]’ (near match) 349 | operator>>(__streambuf_type* __sb); | ^~~~~~~~ /usr/include/c++/13/istream:349:7: note: conversion of argument 1 would be ill-formed: zmeu.cpp:8:15: error: invalid conversion from ‘long long int’ to ‘std::basic_istream<char>::__streambuf_type*’ {aka ‘std::basic_streambuf<char>*’} [-fpermissive] 8 | fin>>a>>(b*2); | ~~^~~ | | | long long int zmeu.cpp:8:11: note: candidate: ‘operator>>(int, long long int)’ (built-in) 8 | fin>>a>>(b*2); | ~~~~~~^~~~~~~ zmeu.cpp:8:11: note: no known conversion for argument 1 from ‘std::basic_istream<char>::__istream_type’ {aka ‘std::basic_istream<char>’} to ‘int’ In file included from /usr/include/c++/13/string:55, from /usr/include/c++/13/bits/locale_classes.h:40, from /usr/include/c++/13/bits/ios_base.h:41, from /usr/include/c++/13/ios:44, from /usr/include/c++/13/istream:40: /usr/include/c++/13/bits/basic_string.tcc:827:5: note: candidate: ‘template<class _CharT, class _Traits, class _Alloc> std::basic_istream<_CharT, _Traits>& std::operator>>(basic_istream<_CharT, _Traits>&, __cxx11::basic_string<_CharT, _Traits, _Alloc>&)’ 827 | operator>>(basic_istream<_CharT, _Traits>& __in, | ^~~~~~~~ /usr/include/c++/13/bits/basic_string.tcc:827:5: note: template argument deduction/substitution failed: zmeu.cpp:8:17: note: mismatched types ‘std::__cxx11::basic_string<_CharT, _Traits, _Alloc>’ and ‘long long int’ 8 | fin>>a>>(b*2); | ^ In file included from /usr/include/c++/13/istream:1106: /usr/include/c++/13/bits/istream.tcc:975:5: note: candidate: ‘template<class _CharT, class _Traits> std::basic_istream<_CharT, _Traits>& std::operator>>(basic_istream<_CharT, _Traits>&, _CharT&)’ 975 | operator>>(basic_istream<_CharT, _Traits>& __in, _CharT& __c) | ^~~~~~~~ /usr/include/c++/13/bits/istream.tcc:975:5: note: template argument deduction/substitution failed: zmeu.cpp:8:17: note: deduced conflicting types for parameter ‘_CharT’ (‘char’ and ‘long long int’) 8 | fin>>a>>(b*2); | ^ /usr/include/c++/13/istream:846:5: note: candidate: ‘template<class _Traits> std::basic_istream<char, _Traits>& std::operator>>(basic_istream<char, _Traits>&, unsigned char&)’ 846 | operator>>(basic_istream<char, _Traits>& __in, unsigned char& __c) | ^~~~~~~~ /usr/include/c++/13/istream:846:5: note: template argument deduction/substitution failed: zmeu.cpp:8:15: note: cannot convert ‘(b * 2)’ (type ‘long long int’) to type ‘unsigned char&’ 8 | fin>>a>>(b*2); | ~~^~~ /usr/include/c++/13/istream:851:5: note: candidate: ‘template<class _Traits> std::basic_istream<char, _Traits>& std::operator>>(basic_istream<char, _Traits>&, signed char&)’ 851 | operator>>(basic_istream<char, _Traits>& __in, signed char& __c) | ^~~~~~~~ /usr/include/c++/13/istream:851:5: note: template argument deduction/substitution failed: zmeu.cpp:8:15: note: cannot convert ‘(b * 2)’ (type ‘long long int’) to type ‘signed char&’ 8 | fin>>a>>(b*2); | ~~^~~ /usr/include/c++/13/istream:893:5: note: candidate: ‘template<class _CharT, class _Traits> std::basic_istream<_CharT, _Traits>& std::operator>>(basic_istream<_CharT, _Traits>&, _CharT*)’ 893 | operator>>(basic_istream<_CharT, _Traits>& __in, _CharT* __s) | ^~~~~~~~ /usr/include/c++/13/istream:893:5: note: template argument deduction/substitution failed: zmeu.cpp:8:17: note: mismatched types ‘_CharT*’ and ‘long long int’ 8 | fin>>a>>(b*2); | ^ /usr/include/c++/13/istream:936:5: note: candidate: ‘template<class _Traits> std::basic_istream<char, _Traits>& std::operator>>(basic_istream<char, _Traits>&, unsigned char*)’ 936 | operator>>(basic_istream<char, _Traits>& __in, unsigned char* __s) | ^~~~~~~~ /usr/include/c++/13/istream:936:5: note: template argument deduction/substitution failed: zmeu.cpp:8:15: note: cannot convert ‘(b * 2)’ (type ‘long long int’) to type ‘unsigned char*’ 8 | fin>>a>>(b*2); | ~~^~~ /usr/include/c++/13/istream:942:5: note: candidate: ‘template<class _Traits> std::basic_istream<char, _Traits>& std::operator>>(basic_istream<char, _Traits>&, signed char*)’ 942 | operator>>(basic_istream<char, _Traits>& __in, signed char* __s) | ^~~~~~~~ /usr/include/c++/13/istream:942:5: note: template argument deduction/substitution failed: zmeu.cpp:8:15: note: cannot convert ‘(b * 2)’ (type ‘long long int’) to type ‘signed char*’ 8 | fin>>a>>(b*2); | ~~^~~ /usr/include/c++/13/istream:1096:5: note: candidate: ‘template<class _Istream, class _Tp> _Istream&& std::operator>>(_Istream&&, _Tp&&)’ 1096 | operator>>(_Istream&& __is, _Tp&& __x) | ^~~~~~~~ /usr/include/c++/13/istream:1096:5: note: template argument deduction/substitution failed: /usr/include/c++/13/istream: In substitution of ‘template<class _Istream, class _Tp> _Istream&& std::operator>>(_Istream&&, _Tp&&) [with _Istream = std::basic_istream<char>&; _Tp = long long int]’: zmeu.cpp:8:17: required from here /usr/include/c++/13/istream:1096:5: error: no type named ‘type’ in ‘struct std::enable_if<false, void>’
Cum funcționează evaluarea?
www.pbinfo.ro permite evaluarea a două tipuri de probleme:
- probleme la care rezolvarea presupune scrierea unui program complet
- probleme la care rezolvarea presupune scrierea unei secvențe de program - câteva instrucțiuni, o listă de declarații, una sau mai multe funcții, etc.
Problema Zmeu face parte din prima categorie. Soluția propusă de tine va fi evaluată astfel:
- Programul sursă este compilat folosind compilatorul corespunzător. Dacă în urma compilării se obțin erori sau avertismente, acestea sunt afișate în această pagină.
- Dacă programul a fost compilat, executabilul obținut va fi rulat, furnizându-i-se unul sau mai multe seturi de date de intrare, în concordanță cu restricțiile specifice problemei. Pentru fiecare set de date se obține un anumit punctaj, în raport cu corectitudinea soluției tale.
Suma punctajelor acordate pe testele utilizate pentru verificare este 100. Astfel, soluția ta poate obține cel mult 100 de puncte, caz în care se poate considera corectă.