Compilare: user.cpp: In function ‘bool dijkstra()’: user.cpp:110:38: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int j = 0; j < g[i].size(); j++) ^ user.cpp: In function ‘int main()’: user.cpp:148:31: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(in, "%d%d", &n, &k); ^ user.cpp:156:37: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(in, "%lf", &prob); ^