제출 #528660

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
528660		Apiram	Izbori (COCI22_izbori)	C++14	15 / 110	14 ms	5812 KiB

Main

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

const int mxN = (int)3e5 +5;

signed main() {
    cin.tie(nullptr)->ios_base::sync_with_stdio(false);
    int n; cin>>n;
    vector<int>v(n);
    bool ok = 0;
    for(auto &z : v) {
        cin>>z;
        if(z == 3)
            ok = 1;
        z = z == 1 ? -1 : 1;
    }
    if(ok) {
        cout << 10; return 0;
    }
    int curr = mxN;
    vector<int>p(4*mxN,0);
    int64_t ans = 0, d = 0;
    for(int i = 0 ; i < n ; i++) {
        if(v[i] == 1) {
            p[++curr]++;
            d += p[curr];
        } else {
            p[curr+1]++;
            d -= p[curr--];
        }
        ans += d;
    }
    p.clear();
    p.resize(4*mxN,0);
    curr = mxN;
    int64_t ans2 = 0;
    d = 0;
    for(int i = 0 ; i < n ; i++) {
        if(v[i] == -1) {
            p[++curr]++;
            d += p[curr];
        } else {
            p[curr+1]++;
            d -= p[curr--];
        }
        ans2 += d;
    }
    cout << ans + ans2;
    return 0;
}

• Subtask 1: 0 / 10
• Subtask 2: 0 / 15
• Subtask 3: 15 / 15
• Subtask 4: 0 / 70