Compilare: main.cpp: In function 'void DP()': main.cpp:103:20: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] while(V.count()!=n) ~~~~~~~~~^~~ main.cpp: In function 'void citire()': main.cpp:32:19: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] scanf("%d",&n); ^ main.cpp:36:29: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] scanf("%d %d",&a,&b); ^ main.cpp:43:32: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] scanf("%d ",&N[i].cost); ^ main.cpp: In function 'int main()': main.cpp:146:35: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] freopen("guvern.in","r",stdin); ^ main.cpp:147:37: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] freopen("guvern.out","w",stdout); ^