Compilare: user.cpp: In function ‘int main()’: user.cpp:57:29: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if ( Q.size() < K ){ ^ user.cpp:71:26: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if ( Q.size() >= K && dif[1] <= sum ) ^ user.cpp:35:45: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf ( f, "%d%d%d%d", &N, &K ,&M, &P ); ^ user.cpp:38:56: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf ( f, "%d%d", &sld[i].cap, &sld[i].timp ); ^ user.cpp:43:38: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf ( f, "%lld", &dif[i] ); ^ user.cpp:48:39: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf ( f, "%d", &querys[i] ); ^