Submission #257490

#	Time	Username	Problem	Language	Result	Execution time	Memory
257490		Osama_Alkhodairy	Coin Collecting (JOI19_ho_t4)	C++17	0 / 100	1 ms	384 KiB

joi2019_ho_t4

#include <bits/stdc++.h>
using namespace std;
#define finish(x) return cout << x << endl, 0
#define ll long long

int n;
vector <vector <int> > a;
 
int main(){
    ios_base::sync_with_stdio(0);
    cin.tie(0);
    cin >> n;
    a.resize(2, vector <int>(n, 0));
    ll ans = 0;
    for(int i = 0 ; i < 2 * n ; i++){
        int x, y;
        cin >> x >> y;
        int nx = min(n, max(1, x));
        int ny = min(2, max(1, y));
        ans += abs(nx - x) + abs(ny - y);
        a[ny - 1][nx - 1]++;
    }
    vector <vector <int> > sum(2, vector <int>(n, 0));
    for(int i = 0 ; i < 2 ; i++){
        for(int j = n - 1 ; j >= 0 ; j--){
            if(j < n - 1) sum[i][j] = sum[i][j + 1];
            sum[i][j] += a[i][j];
        }
    }
    for(int itt = 0 ; itt < 2 ; itt++){
        int cur = a[0][0] + a[1][0];
        for(int j = 1 ; j < n ; j++){
            int g = max(cur - 2 * j, 0);
            cur += a[0][j] + a[1][j];
            int s0 = sum[0][j], s1 = sum[1][j];
            while(g--){
                int f = 0;
                if(s0 < s1){
                    if(a[0][j - 1] > 1) f = 0;
                    else f = 1;
                }
                else{
                    if(a[1][j - 1] > 1) f = 1;
                    else f = 0;
                }
                a[f][j - 1]--;
                a[f][j]++;
                ans++;
            }
        }
        for(int i = 0 ; i < 2 ; i++){
            reverse(a[i].begin(), a[i].end());
        }
    }
    for(int j = 0 ; j < n ; j++){
        if(a[0][j] != 1) ans++;
    }
    cout << ans << endl;
}

• Subtask 1: 0 / 8
• Subtask 2: 0 / 29
• Subtask 3: 0 / 63