Compilare: main.cpp: In function 'void f(int, int, int*, int*, int*)': main.cpp:60:18: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int t=0;t<v[nm].size();t++) ~^~~~~~~~~~~~~ main.cpp:87:18: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int t=0;t<v[nm].size();t++) ~^~~~~~~~~~~~~ main.cpp:96:28: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int tt=0;tt<v[nma].size();tt++) ~~^~~~~~~~~~~~~~ main.cpp: In function 'int main()': main.cpp:115:28: warning: ignoring return value of 'int fscanf(FILE*, const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] fscanf(in,"%d%d",&n,&m); ^ main.cpp:118:32: warning: ignoring return value of 'int fscanf(FILE*, const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] fscanf(in,"%d%d",&x,&y); ^