Rezumat problemă

MChenar

#778

Se dă o matrice cu n linii şi m coloane şi elemente numere naturale. Să se determine mulțimea formată din elementele distincte ale chenarului matricei.

Consola Candale Silviu (silviu) medie

Clasa 9 Tablouri bidimensionale (matrice) Parcurgerea matricelor oarecare

Rezolvă

Detalii

Problema	MChenar	Operații I/O	tastatură/ecran
Limita timp	0.1 secunde	Limita memorie	Total: 64 MB / Stivă 8 MB
Id soluție	#64580950	Utilizator	Draguleanu Eric (Giggiteye)
Fișier	mchenar.cpp	Dimensiune	896 B
Data încărcării	15 Mai 2026, 20:14	Scor/rezultat	Eroare de compilare

Evaluare

Mesaj compilare

mchenar.cpp: In function ‘int main()’:
mchenar.cpp:20:5: warning: this ‘for’ clause does not guard... [-Wmisleading-indentation]
   20 |     for (int i = 0; i < n; i++)
      |     ^~~
mchenar.cpp:24:9: note: ...this statement, but the latter is misleadingly indented as if it were guarded by the ‘for’
   24 |         int vec[4 * N];
      |         ^~~
mchenar.cpp:36:5: warning: this ‘for’ clause does not guard... [-Wmisleading-indentation]
   36 |     for (int i = 0; i < n; i++)
      |     ^~~
mchenar.cpp:39:9: note: ...this statement, but the latter is misleadingly indented as if it were guarded by the ‘for’
   39 |         set<int>::iterator itr;
      |         ^~~
mchenar.cpp:39:9: error: ‘set’ was not declared in this scope; did you mean ‘std::set’?
   39 |         set<int>::iterator itr;
      |         ^~~
      |         std::set
In file included from /usr/include/c++/13/set:63,
                 from mchenar.cpp:3:
/usr/include/c++/13/bits/stl_set.h:96:11: note: ‘std::set’ declared here
   96 |     class set
      |           ^~~
mchenar.cpp:39:13: error: expected primary-expression before ‘int’
   39 |         set<int>::iterator itr;
      |             ^~~
mchenar.cpp:42:10: error: ‘itr’ was not declared in this scope
   42 |     for (itr = mult.begin(); itr != mult.end(); itr++)
      |          ^~~
mchenar.cpp:42:5: warning: this ‘for’ clause does not guard... [-Wmisleading-indentation]
   42 |     for (itr = mult.begin(); itr != mult.end(); itr++)
      |     ^~~
mchenar.cpp:45:9: note: ...this statement, but the latter is misleadingly indented as if it were guarded by the ‘for’
   45 |         return 0;
      |         ^~~~~~
mchenar.cpp:24:13: warning: unused variable ‘vec’ [-Wunused-variable]
   24 |         int vec[4 * N];
      |             ^~~
mchenar.cpp:25:9: warning: unused variable ‘wi’ [-Wunused-variable]
   25 |     int wi = 0;
      |         ^~
mchenar.cpp:17:10: warning: ignoring return value of ‘int scanf(const char*, ...)’ declared with attribute ‘warn_unused_result’ [-Wunused-result]
   17 |     scanf("%d%d", &n, &m);
      |     ~~~~~^~~~~~~~~~~~~~~~
mchenar.cpp:22:22: warning: ignoring return value of ‘int scanf(const char*, ...)’ declared with attribute ‘warn_unused_result’ [-Wunused-result]
   22 |                 scanf("%d", &mat[i][j]);
      |                 ~~~~~^~~~~~~~~~~~~~~~~~

Cum funcționează evaluarea?