Compilare: user.cpp: In function ‘int main()’: user.cpp:40:21: warning: narrowing conversion of ‘i’ from ‘int’ to ‘short int’ inside { } [-Wnarrowing] pq.push({i, 1}); ^ user.cpp:58:25: warning: narrowing conversion of ‘u’ from ‘int’ to ‘short int’ inside { } [-Wnarrowing] pq.push({u, in[u]}); ^ user.cpp:23:34: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("cezar.in", "r", stdin); ^ user.cpp:24:36: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("cezar.out", "w", stdout); ^ user.cpp:27:24: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d%d", &N, &K); ^ user.cpp:30:26: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d%d", &u, &v); ^