Compilare: main.cpp: In function 'void bfs(int, int)': main.cpp:42:23: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int i=0;i<L[nod].size();++i){ ~^~~~~~~~~~~~~~ main.cpp: In function 'int dfs(int, int, int)': main.cpp:58:17: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (;w[nod]<L[nod].size();w[nod]++){ ~~~~~~^~~~~~~~~~~~~~ main.cpp: In function 'int main()': main.cpp:75:25: warning: ignoring return value of 'int fscanf(FILE*, const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] fscanf (fin,"%d",&n); ^ main.cpp:80:32: warning: ignoring return value of 'int fscanf(FILE*, const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] fscanf (fin,"%d",&A[i]); ^ main.cpp:94:32: warning: ignoring return value of 'int fscanf(FILE*, const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] fscanf (fin,"%d",&B[i]); ^ main.cpp:112:40: warning: ignoring return value of 'int fscanf(FILE*, const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] fscanf (fin,"%d",&cost); ^