Compilare: user.cpp: In function ‘int main()’: user.cpp:28:36: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(j = 0; j < v[p[i] - 1].size(); j++) ^ user.cpp:12:37: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("subsiruri.in", "r", stdin); ^ user.cpp:13:39: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("subsiruri.out", "w", stdout); ^ user.cpp:14:17: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d", &n); ^ user.cpp:16:21: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d", &x[i]); ^ user.cpp: In function ‘int bs(int, int)’: user.cpp:80:1: warning: control reaches end of non-void function [-Wreturn-type] } ^