제출 #236166

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
236166		VEGAnn	Dojave (COCI17_dojave)	C++14	56 / 140	4080 ms	8952 KiB

dojave

#include <bits/stdc++.h>
#define sz(x) ((int)x.size())
#define a3 array<int, 3>
using namespace std;
const int N = (1 << 20);
const int oo = 2e9;
int a[N], need, m, ans = 0;
bool par[N];

int main(){
    ios_base::sync_with_stdio(0); cin.tie(0);

#ifdef _LOCAL
    freopen("in.txt","r",stdin);
#endif // _LOCAL

    cin >> m;

    if (m == 1){
        cout << 1;
        return 0;
    }

    for (int i = 0; i < (1 << m); i++)
        cin >> a[i];

    need = (1 << m) - 1;

    for (int l = 0; l < (1 << m); l++){
        int xr = 0;

        fill(par, par + (1 << m), 0);

        int kol = 0;

        for (int r = l; r < (1 << m); r++){
            xr ^= a[r];
            par[a[r]] = 1;

            if (par[need - a[r]])
                kol--;
            else kol++;

            if (xr == need){
                ans++;
            } else {
                if (kol > 0)
                    ans++;
            }
        }
    }

    cout << ans;

    return 0;
}

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• Subtask 2: 14 / 14
• Subtask 3: 14 / 14
• Subtask 4: 14 / 14
• Subtask 5: 14 / 14
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