Compilare: user.cpp: In function ‘void djk(int)’: user.cpp:29:31: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(j=0; j<g[vf].size(); ++j) ^ user.cpp: In function ‘int main()’: user.cpp:56:35: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("team.in", "r", stdin); ^ user.cpp:57:37: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("team.out", "w", stdout); ^ user.cpp:58:31: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d%d%d",&p, &n, &m); ^ user.cpp:61:36: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d%d%d", &j, &k, &l); ^ user.cpp:67:42: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] for(i=1; i<=p; ++i)scanf("%d", &c[i]); ^ user.cpp: In function ‘void divide(int, int, int)’: user.cpp:49:23: warning: ‘j’ may be used uninitialized in this function [-Wmaybe-uninitialized] cost+=dmin[c[j]]; ^