Compilare: user.cpp: In function ‘int tryConf(int)’: user.cpp:28:35: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int j=0; j<dv[i].size(); ++j) ^ user.cpp:44:27: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=0; i<p.size(); ++i) ^ user.cpp: In function ‘int main()’: user.cpp:67:31: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int j=0; j<p.size(); ++j) ^ user.cpp:53:42: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("numerologie.in", "r", stdin); ^ user.cpp:54:44: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("numerologie.out", "w", stdout); ^ user.cpp:56:26: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d%d", &n, &m); ^ user.cpp:58:27: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d", &v[i]); ^ user.cpp:61:30: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d", &cost[i]); ^