Compilare: user.cpp: In function ‘void extend()’: user.cpp:74:33: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int i = 0; i < rez.size()-1; i++) ^ user.cpp: In function ‘void citire()’: user.cpp:18:20: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d", &n); ^ user.cpp:20:31: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d %d", &x, &y); ^ user.cpp: In function ‘int main()’: user.cpp:121:39: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("plimbare.in", "r", stdin); ^ user.cpp:122:41: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("plimbare.out", "w", stdout); ^ user.cpp: In function ‘void solve()’: user.cpp:116:17: warning: ‘ind’ may be used uninitialized in this function [-Wmaybe-uninitialized] afisare(ind); ^