Compilare: user.cpp: In function ‘void shrink(int, int)’: user.cpp:55:35: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int i = 0; i < V[s].size(); ++ i) ^ user.cpp: In function ‘int main()’: user.cpp:135:27: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d %d", &n, &m); ^ user.cpp:139:53: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d %d %d", &v[i].x, &v[i].y, &v[i].t); ^ user.cpp: In function ‘void MinCutPhase(int)’: user.cpp:122:17: warning: ‘t’ may be used uninitialized in this function [-Wmaybe-uninitialized] shrink(s, t); ^ user.cpp:122:17: warning: ‘s’ may be used uninitialized in this function [-Wmaybe-uninitialized]