Compilare: user.cpp: In function ‘void Solve()’: user.cpp:59:29: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] while(poz + 1 < good.size() && t > good[poz].when(good[poz + 1])) ^ user.cpp: In function ‘void Read()’: user.cpp:35:23: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d%d", &n, &m); ^ user.cpp:38:48: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d%d", &l[i].m, &l[i].n), l[i].ind = i; ^ user.cpp: In function ‘void Solve()’: user.cpp:58:18: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d", &t); ^ user.cpp: In function ‘int main()’: user.cpp:66:32: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("vmin.in", "r", stdin); ^ user.cpp:67:34: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("vmin.out", "w", stdout); ^