Submission #1032202

#	Time	Username	Problem	Language	Result	Execution time	Memory
1032202		Andrey	Coin Collecting (JOI19_ho_t4)	C++14	100 / 100	32 ms	5828 KiB

joi2019_ho_t4

#include<bits/stdc++.h>
using namespace std;
 
int haha[100001][2];
long long dp[3000][3000];
 
int main()
{
    ios_base::sync_with_stdio(false);
    cin.tie(NULL);
    cout.tie(NULL);
    int n,x,y;
    cin >> n;
    long long ans = 0;
    for(int i = 1; i <= n; i++) {
        haha[i][0] = 0;
        haha[i][1] = 0;
    }
    for(int i = 0; i < 2*n; i++) {
        cin >> x >> y;
        if(x < 1) {
            ans+=1-x;
            x = 1;
        }
        else if(x > n) {
            ans+=x-n;
            x = n;
        }
        if(y < 1) {
            ans+=1-y;
            y = 1;
        }
        else if(y > 2) {
            ans+=y-2;
            y = 2;
        }
        haha[x][y-1]++;
    }
    int a = 0,b = 0;
    for(int i = 1; i <= n; i++) {
        a+=haha[i][0];
        b+=haha[i][1];
        if(a > i && b < i) {
            int c = min(a-i,i-b);
            ans+=c;
            a-=c;
            b+=c;
        }
        else if(a < i && b > i) {
            int c = min(b-i,i-a);
            ans+=c;
            a+=c;
            b-=c;
        }
        ans+=abs(a-i);
        ans+=abs(b-i);
    }
    cout << ans;
    return 0;
}

• Subtask 1: 8 / 8
• Subtask 2: 29 / 29
• Subtask 3: 63 / 63