Compilare: main.cpp: In function 'int main()': main.cpp:38:18: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] while(poz<h1.size()){ ~~~^~~~~~~~~~ main.cpp:43:26: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(i=0;i<cost[nod][0].size();i++){ ~^~~~~~~~~~~~~~~~~~~~ main.cpp:16:35: warning: ignoring return value of 'int fscanf(FILE*, const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] fscanf(fi,"%d%d%d",&cer,&n,&m); ^ main.cpp:20:36: warning: ignoring return value of 'int fscanf(FILE*, const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] fscanf(fi,"%d%d",&a,&b); ^