제출 #659113

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
659113		finn__	A Huge Tower (CEOI10_tower)	C++17	30 / 100	264 ms	11208 KiB

tower

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

int main()
{
    size_t n;
    int64_t d;
    cin >> n >> d;

    vector<int64_t> blocks(n);
    for (int64_t &x : blocks)
        cin >> x;

    sort(blocks.begin(), blocks.end());
    auto it = blocks.begin(), jt = blocks.begin();
    int64_t possibilities = 1;

    while (jt != blocks.end())
    {
        while (it != jt && *jt - *it > d)
            it++;
        possibilities = (possibilities * (jt - it + 1));
        jt++;
    }

    cout << possibilities << '\n';
}

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