Compilare: user.cpp: In function ‘int main()’: user.cpp:198:35: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i = 0; i + 1 < v.size(); i++) ^ user.cpp: In function ‘pil read()’: user.cpp:23:28: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d", &x); ^ user.cpp:31:28: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d", &x); ^ user.cpp: In function ‘int main()’: user.cpp:160:36: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("joc19.in", "r", stdin); ^ user.cpp:161:38: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("joc19.out", "w", stdout); ^