Compilare: main.cpp: In function 'int main()': main.cpp:29:23: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if(m[k].size()>k) ~~~~~~~~~~~^~ main.cpp:44:24: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] while(pq.size()>maxx) ~~~~~~~~~^~~~~ main.cpp:16:33: warning: ignoring return value of 'int fscanf(FILE*, const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] fscanf(in,"%d%d%d",&n,&x,&l); ^ main.cpp:19:32: warning: ignoring return value of 'int fscanf(FILE*, const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] fscanf(in,"%d%d",&d,&a); ^