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I'm getting WA using the same algorithm described above. Here's my code:

#include <iostream>
#include <cstdio>
#include <cstring>
#include <algorithm>
#include <vector>
#include <utility>
using namespace std;
bool comparer(pair < vector < int >,int > a,pair < vector < int >,int > b)
{
int i = 0 ...