Compilare: user.cpp: In function ‘int main()’: user.cpp:57:32: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i = 0 ; i < r.size(); i++) ^ user.cpp:70:32: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i = 0 ; i < p.size() ; i++) ^ user.cpp:56:22: warning: unused variable ‘numarul’ [-Wunused-variable] int costul = 0 , numarul = 0; ^ user.cpp:37:32: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("apm.in","r",stdin); ^ user.cpp:38:34: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("apm.out","w",stdout); ^ user.cpp:41:24: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d%d",&n,&m); ^ user.cpp:49:36: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d%d%d",&x,&y,&cost); ^