Submission #828751

#	Time	Username	Problem	Language	Result	Execution time	Memory
828751		NhanBeoo	Coin Collecting (JOI19_ho_t4)	C++17	100 / 100	34 ms	1500 KiB

joi2019_ho_t4

#include <bits/stdc++.h>
using namespace std;

const int N = 1e5 + 5;
int n, x, y, i;
int m[N][3], a, b;
long long ans;

signed main(){
	ios_base::sync_with_stdio(0);
	cin.tie(0);
	cout.tie(0);
	
	cin >> n;
	for(i=1; i<=(n<<1); ++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;
		++m[x][y];
	}
	for(i=1; i<=n; ++i){
		a += m[i][1] - 1, b +=  m[i][2] - 1;
		while(a > 0 and b < 0) --a, ++b, ++ans;
		while(a < 0 and b > 0) ++a, --b, ++ans;
		ans += abs(a) + abs(b);
	}
	cout << ans;
} 

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