Compilare: user.cpp: In function ‘void DFS(int, int, int, int)’: user.cpp:113:36: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(i = 0; i < Gprim[nod].size(); ++i){ ^ user.cpp: In function ‘int main()’: user.cpp:43:39: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(fin, "%d %d\n", &x, &y); ^ user.cpp: In function ‘void init()’: user.cpp:51:39: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(fin,"%d %d %d", &n, &m, &k); ^ user.cpp:55:62: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(fin,"%d %d %d", &G[i].x, &G[i].y, &G[i].cost ); ^