Submission #229743

#	Time	Username	Problem	Language	Result	Execution time	Memory
229743		PeppaPig	Coin Collecting (JOI19_ho_t4)	C++14	100 / 100	79 ms	6648 KiB

joi2019_ho_t4

#include <bits/stdc++.h>

#define long long long

using namespace std;

const int N = 1e5+5;

int n, cnt[3][N];
long ans;
queue<int> pos[3], coin[3];

int main() {
    scanf("%d", &n);
    for(int i = 1, x, y; i <= 2 * n; i++) {
        scanf("%d %d", &x, &y);
        if(x < 1) ans += abs(x - 1), x = 1;
        if(x > n) ans += abs(x - n), x = n;
        if(y < 1) ans += abs(y - 1), y = 1;
        if(y > 2) ans += abs(y - 2), y = 2;
        ++cnt[y][x];
    }
    for(int i = 1; i <= n; i++) {
        pos[1].emplace(i), pos[2].emplace(i);
        for(int j = 1; j <= 2; j++)
            while(cnt[j][i]--) coin[j].emplace(i);
        for(int j = 1; j <= 2; j++) while(!pos[j].empty() && !coin[j].empty()) {
            ans += abs(pos[j].front() - coin[j].front());
            pos[j].pop(), coin[j].pop();
        }
        for(int j = 1; j <= 2; j++) while(!pos[j ^ 3].empty() && !coin[j].empty()) {
            ans += abs(pos[j ^ 3].front() - coin[j].front()) + 1;
            pos[j ^ 3].pop(), coin[j].pop();
        }
    }
    printf("%lld\n", ans);

    return 0;
}

Compilation message (stderr)

joi2019_ho_t4.cpp: In function 'int main()':
joi2019_ho_t4.cpp:14:10: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
     scanf("%d", &n);
     ~~~~~^~~~~~~~~~
joi2019_ho_t4.cpp:16:14: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
         scanf("%d %d", &x, &y);
         ~~~~~^~~~~~~~~~~~~~~~~

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