Compilare: user.cpp: In function ‘void kruskal(int)’: user.cpp:28:20: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int i = 0; i < vec[start].size(); i++) ~~^~~~~~~~~~~~~~~~~~~ user.cpp:39:22: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int i = 0; i < vec[n.dest].size(); i++) { ~~^~~~~~~~~~~~~~~~~~~~ user.cpp: In function ‘void afisare()’: user.cpp:72:20: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int i = 0; i < vec.size(); i++) { ~~^~~~~~~~~~~~ user.cpp:73:21: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int j = 0; j < vec[i].size(); j++) ~~^~~~~~~~~~~~~~~ user.cpp: In function ‘int suma(std::vector<Node>&)’: user.cpp:84:20: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int i = 0; i < x.size(); i++) { ~~^~~~~~~~~~ user.cpp: In function ‘void rezultat()’: user.cpp:93:20: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int i = 0; i < result.size(); i++) { ~~^~~~~~~~~~~~~~~ user.cpp:94:71: warning: too many arguments for format [-Wformat-extra-args] printf("%d %d\n", result[i].source, result[i].dest, result[i].length); ^ user.cpp: In function ‘void citire()’: user.cpp:52:24: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d %d", &n, &m); ^ user.cpp:57:37: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d %d %d", &x, &y, &length); ^ user.cpp: In function ‘int main()’: user.cpp:99:31: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("apm.in", "r", stdin); ^ user.cpp:100:33: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("apm.out", "w", stdout); ^