Compilare: main.cpp: In function 'int main()': main.cpp:21:33: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] freopen("fadema.in","r",stdin); ^ main.cpp:22:35: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] freopen("fadema.out","w",stdout); ^ main.cpp:23:23: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] scanf("%d %d",&n,&m); ^ main.cpp:28:28: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] scanf("%d ",&v[i][j]); ^ main.cpp:76:36: warning: array subscript is below array bounds [-Warray-bounds] while(!s.empty()&&s.top().w>c[i][j]) ~~~^ main.cpp:71:15: warning: 'p' may be used uninitialized in this function [-Wmaybe-uninitialized] s.push({p,c[i][j]}); ~~~~~~^~~~~~~~~~~~~