Compilare: main.cpp: In function 'void solve()': main.cpp:40:22: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(i = 0; i < nei[node].size(); i++) { ~~^~~~~~~~~~~~~~~~~~ main.cpp:57:22: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i = 0; i < ans.size(); i++) { ~~^~~~~~~~~~~~ main.cpp:6:26: warning: unused variable 't' [-Wunused-variable] int n, m, src, dest, t, k, x, y, i, edge; ^ main.cpp:51:9: warning: 'time' may be used uninitialized in this function [-Wmaybe-uninitialized] if(d[i] <= time) { ^~