Submission #1112176

#	Time	Username	Problem	Language	Result	Execution time	Memory
1112176		PagodePaiva	Fortune Telling 2 (JOI14_fortune_telling2)	C++17	4 / 100	3071 ms	1488 KiB

fortune_telling2

#include<bits/stdc++.h>

using namespace std;

const int N = 40010;
int dp[N][2];

int main(){
    ios::sync_with_stdio(false); cin.tie(0);
    int n, k;
    cin >> n >> k;
    vector <pair <long long,long long>> v;
    for(int i = 1;i <= n;i++){
        long long a, b;
        cin >> a >> b;
        v.push_back({a, b});
    }
    vector <long long> qr;
    for(int i = 1;i <= k;i++){
        long long x;
        cin >> x;
        qr.push_back(x);
    }
    long long res = 0;
    for(int i = 1;i <= n;i++){
        dp[k][0] = dp[k][1] = 0;
        for(int j = k-1;j >= 0;j--){
            dp[j][0] = (min(v[i-1].first, v[i-1].second) <= qr[j] ? dp[j+1][1]+1 : dp[j+1][0]);
            dp[j][1] = (max(v[i-1].first, v[i-1].second) <= qr[j] ? dp[j+1][0]+1 : dp[j+1][1]);
        }
        int a = v[i-1].first, b = v[i-1].second;
        if(a == min(a, b)){
            if(dp[0][0] % 2 == 0){
                res += a;
            }
            else{
                res += b;
            }
        }
        else{
            if(dp[0][1]%2 == 0){
                res += a;
            }
            else{
                res += b;
            }
        }
        //cout << dp[0][0]<< ' ' << dp[0][1] << '\n';
    }
    cout << res << '\n';
}

• Subtask 1: 4 / 4
• Subtask 2: 0 / 31
• Subtask 3: 0 / 65