| # | 제출 시각 | 아이디 | 문제 | 언어 | 결과 | 실행 시간 | 메모리 |
|---|---|---|---|---|---|---|---|
| 1344743 | ElayV13 | 3개의 봉우리 (IOI25_triples) | C++20 | 10 ms | 1960 KiB |
#include "triples.h"
#include "bits/stdc++.h"
using namespace std;
#define ll long long
int N;
long long count_triples(vector<int>H)
{
N=H.size();
ll res=0;
map<int,int>mp1,mp2;
for(int i=0;i<N;i++) mp2[H[i]-i]++;
for(int i=0;i<N;i++){
mp2[H[i]-i]--;
ll f=mp1[H[i]-i],s=mp2[H[i]-i];
res+=(f*s);
mp1[H[i]-i]++;
}
return res;
}
vector<int>construct_range(int M,int K)
{
}
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