OJ Board

why wrong answer:
my code:
#include <stdio.h>
#include <iostream>
#include <queue>
#include <string.h>
using namespace std;
int flag=0,flag1=0;
int par[105],v,cost=0,t=0;
struct data
{
int node1,node2;
int weight;
bool operator < (const data &p) const
{
return (weight>p.weight);
}
};
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