OJ Board

why i get RTE ???? :(

#include<iostream>
#include<vector>
#include<iterator>
using namespace std;
vector<int>vi[100050];
vector<int>::iterator it;
int main()
{

int i,j,m,n,u,v,a;
while(cin>>m>>n)
{
for(i=1;i<=m;i++)
{
cin>>a;
vi[a].push_back(i);
}

for(j=1;j<=n;j++)
{
cin>>u>>v ...