Compilare: user.cpp: In function ‘int pise(std::vector<int>&, int, int, int, int, int)’: user.cpp:45:32: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int i = poz; i < b.size(); i++) ^ user.cpp: In function ‘int solve(int, int)’: user.cpp:70:30: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int i = 1; i <= b.size(); i++) ^ user.cpp: In function ‘int main()’: user.cpp:81:33: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("pinex.in", "r", stdin); ^ user.cpp:82:35: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("pinex.out", "w", stdout); ^ user.cpp:84:17: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d", &t); ^ user.cpp:90:25: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d %d", &x, &y); ^