Submission #828748

#	Time	Username	Problem	Language	Result	Execution time	Memory
828748		NhanBeoo	Coin Collecting (JOI19_ho_t4)	C++17	100 / 100	37 ms	1496 KiB

joi2019_ho_t4

// Judges with GCC >= 12 only needs Ofast
// #pragma GCC optimize("Ofast")
#pragma GCC optimize("O3,no-stack-protector,fast-math,unroll-loops,tree-vectorize")
// MLE optimization
// #pragma GCC optimize("conserve-stack")
// Old judges
// #pragma GCC target("sse4.2,popcnt,lzcnt,abm,mmx,fma,bmi,bmi2")
// New judges. Test with assert(__builtin_cpu_supports("avx2"));
// #pragma GCC target("avx2,popcnt,lzcnt,abm,bmi,bmi2,fma,tune=native")
// Atcoder
// #pragma GCC target("avx2,popcnt,lzcnt,abm,bmi,bmi2,fma")

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

// #define int ll
#define MAX LLONG_MAX
#define st first
#define nd second
#define endl '\n'
#define SZ(x) ((int)x.size())
#define ALL(x) x.begin(), x.end()
typedef long long ll;
typedef pair< int, int > ii;
typedef pair< int, ii > iii;
typedef vector< int > vi;
typedef vector< ii > vii;
typedef vector< iii > viii;
typedef vector< vi > vvi;
typedef vector< vii > vvii;
typedef vector< viii > vviii;

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