Submission #895953

#	Time	Username	Problem	Language	Result	Execution time	Memory
895953		hmm789	Coin Collecting (JOI19_ho_t4)	C++14	0 / 100	1 ms	348 KiB

joi2019_ho_t4

#include <bits/stdc++.h>
using namespace std;
#define int long long
#define INF 1000000000000000000
#define MOD 998244353

int32_t main() {
    ios_base::sync_with_stdio(0);
    cin.tie(0); cout.tie(0);
    int n, x, y, ans = 0;
    cin >> n;
    int a[n][2];
    memset(a, 0, sizeof(a));
    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;
        }
        x--; y--;
        a[x][y]++;
    }
    int i1 = 0, i2 = 0;
    for(int i = 0; i < n; i++) {
        while(i1 < n && a[i1][0] == 0) i1++;
        while(i2 < n && a[i2][1] == 0) i2++;
        if(i1 == n) {
            ans += abs(i-i2);
            a[i2][1]--;
            while(i2 < n && a[i2][1] == 0) i2++;
            ans += abs(i-i2)+1;
            a[i2][1]--;
            continue;
        } else if(i2 == n) {
            ans += abs(i-i1);
            a[i1][0]--;
            while(i1 < n && a[i1][0] == 0) i1++;
            ans += abs(i-i1)+1;
            a[i1][0]--;
            continue;
        }
        if(i1 <= i && i2 > i) {
            ans += abs(i-i1);
            a[i1][0]--;
            while(i1 < n && a[i1][0] == 0) i1++;
        } else if(i2 <= i && i1 > i) {
            ans += abs(i-i2)+1;
            a[i2][1]--;
            while(i2 < n && a[i2][1] == 0) i2++;
        } else if(abs(i-i1) <= abs(i-i2)+1) {
            ans += abs(i-i1);
            a[i1][0]--;
            while(i1 < n && a[i1][0] == 0) i1++;
        } else {
            ans += abs(i-i2)+1;
            a[i2][1]--;
            while(i2 < n && a[i2][1] == 0) i2++;
        }
        if(i1 <= i && i2 > i) {
            ans += abs(i-i1)+1;
            a[i1][0]--;
            while(i1 < n && a[i1][0] == 0) i1++;
        } else if(i2 <= i && i1 > i) {
            ans += abs(i-i2);
            a[i2][1]--;
            while(i2 < n && a[i2][1] == 0) i2++;
        } else if(abs(i-i2) <= abs(i-i1)+1) {
            ans += abs(i-i2);
            a[i2][1]--;
            while(i2 < n && a[i2][1] == 0) i2++;
        } else {
            ans += abs(i-i1)+1;
            a[i1][0]--;
            while(i1 < n && a[i1][0] == 0) i1++;
        }
    }
    cout << ans;
}

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