제출 #1302209

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
1302209		Valaki2	3개의 봉우리 (IOI25_triples)	C++20	6 / 100	436 ms	3548 KiB

triples

#include "triples.h"
#include <bits/stdc++.h>
using namespace std;

#define int long long
#define pb push_back
#define mp make_pair
#define pii pair<int, int>
#define fi first
#define se second

int n;
vector<int> v;

bool good(int a, int b, int c) {
    if(a < 1 || a > n || b < 1 || b > n || c < 1 || c > n) {
        return false;
    }
    vector<int> v1 = {abs(a - b), abs(a - c), abs(b -c)};
    vector<int> v2 = {v[a], v[b], v[c]};
    sort(v1.begin(), v1.end());
    sort(v2.begin(), v2.end());
    return (v1 == v2);
}

int count_triples(vector<signed> H) {
    n = H.size();
    v.assign(1 + n + 1, 0);
    for(int i = 1; i <= n; i++) {
        v[i] = H[i - 1];
    }
    int cnt = 0;
    for(int i = 1; i <= n; i++) {
        for(int j = i + 1; j <= min(n, i + 10); j++) {
            for(int k = j + 1; k <= min(n, i + 10); k++) {
                if(good(i, j, k)) {
                    cnt++;
                }
            }
        }
    }
    return cnt;
}

vector<signed> construct_range(signed M, signed K) {
    return {1, 1, 1};
}

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