Compilare: main.cpp: In function 'int main()': main.cpp:17:31: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] freopen("tj.in", "r", stdin); ^ main.cpp:18:33: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] freopen("tj.out", "w", stdout); ^ main.cpp:20:29: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] for(scanf("%d", &tests_no); tests_no--; ) { ^ main.cpp:25:42: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] for(scanf("%d %d", &n, &mmox), ri = n; mmox--; ) { ^ main.cpp:26:29: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] scanf("%d %d", &i, &j); ^