Compilare: main.cpp: In function 'void afiseazaMatricea()': main.cpp:107:23: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i = 0 ; i < q.size() ; i++) ~~^~~~~~~~~~ main.cpp: In function 'int main()': main.cpp:127:37: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] freopen("culegere.in","r",stdin); ^ main.cpp:128:39: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] freopen("culegere.out","w",stdout); ^ main.cpp:130:34: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] scanf("%d%d%d%d",&m,&n,&k,&e); ^ main.cpp:142:23: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] scanf("%d",&t); ^ main.cpp:145:44: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] scanf("%d%d%d%d",&x,&y,&st,&en); ^ main.cpp:158:47: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] scanf("%d%d%d%d%d",&x,&y,&st,&en,&val); ^