Compilare: user.cpp: In function ‘int main()’: user.cpp:51:27: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=0; i<v.size(); i++) ^ user.cpp:54:26: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] while(j<v.size()-1 && v[j].val == v[j+1].val)j++; ^ user.cpp:65:37: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=0; i<Intervals.size()-1; i++) ^ user.cpp:39:38: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("praslea.in", "r", stdin); ^ user.cpp:40:40: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("praslea.out", "w", stdout); ^ user.cpp:42:29: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d%d", &n, &rmax); ^ user.cpp:45:54: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d%d%d%d", &A[i], &B[i], &F[i], &R[i]); ^