Compilare: main.cpp: In function 'std::vector<int> Dijkstra(const std::vector<std::vector<std::pair<int, int> > >&, int)': main.cpp:19:27: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int i = 0; i < graph[u].size(); ++i) ~~^~~~~~~~~~~~~~~~~ main.cpp: In function 'int main()': main.cpp:64:23: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int i = 1; i < result.size(); ++i) { ~~^~~~~~~~~~~~~~~ main.cpp:51:32: 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:57:64: warning: ignoring return value of 'int fscanf(FILE*, const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] fscanf(in, "%d %d %d", &src, &dest.first, &dest.second); ^