Compilare: main.cpp: In function 'int bfs(int)': main.cpp:58:23: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(i=0; i<g[u.nod].size(); i++) ~^~~~~~~~~~~~~~~~ main.cpp:38:20: warning: variable 'rr' set but not used [-Wunused-but-set-variable] int sum,maxx,r,rr,stare,i,ans=0; ^~ main.cpp: In function 'int main()': main.cpp:97:44: warning: format '%d' expects argument of type 'int', but argument 2 has type 'long long int' [-Wformat=] printf("%d\n", (bfs(i)*1LL*inv)%mod); ^ main.cpp:84:44: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] { freopen("palatulvoltaic.in", "r",stdin); ^ main.cpp:85:46: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] freopen("palatulvoltaic.out", "w",stdout); ^ main.cpp:87:26: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] scanf("%d%d", &n, &k); ^ main.cpp:89:27: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] scanf("%d", &v[i]); ^ main.cpp:91:30: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] scanf("%d%d", &x, &y); ^