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Hi
Can someone help me with this task. I've tried different implementation of bfs but none worked:( here is example :

#include <cstdio>
#include <vector>
#include <queue>

std::vector<int> a[1009];
std::queue<int> Q;
int D[1009];
bool color[1009];

void Bfs(int s)
{
int u, v;
color[s] = true ...