oj.uz

답안 #882521

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
882521 2023-12-03T10:04:07 Z iskhakkutbilim Construction of Highway (JOI18_construction) C++17
0 / 100
 2 ms 6492 KB 
#include <bits/stdc++.h>
using namespace std;
#define int long long
#define ff first
#define ss second
#define all(a) (a.begin(), a.end())

const int mod = 1e9 + 7;
const int N = 1e5;
int n, c[N+10];
vector<int> g[N+10], group[N+10];
int shortest[N+10];
int par[N+10];
signed main(){
	ios::sync_with_stdio(0);
	cin.tie(0); cout.tie(0);
	cin >> n;
	for(int i = 1;i <= n; i++){
		cin >> c[i];
		shortest[i] = -1;
	}
	int q = n-1;
	shortest[1] = 0;
	par[1] = -1; 
	group[1].push_back(1);
	while(q--){
		int a, b; cin >> a >> b;
		int cost = 0;
		for(int s : group[a]){
			if(shortest[s] == -1) continue;
			for(int t : group[a]){
				if(shortest[t] == -1) continue;
				if(shortest[s] < shortest[t]){
					cost+= (c[s] > c[t]); 
				}
			}
		}
		g[a].push_back(b);
		swap(group[b], group[a]);
		group[b].push_back(b);
		if(shortest[b] == -1 or shortest[b] > shortest[a]+1){
			shortest[b] = shortest[a] + 1;
			par[b] = a;
		}
		int parent = a;
		while(parent != -1){
			c[parent] = c[b];
			parent = par[parent];
		}
		cout << cost << '\n';
	}
	return 0;
}

Subtask #1
0 / 7.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 6492 KB Output is correct
2 Incorrect 2 ms 6492 KB Output isn't correct
3 Halted 0 ms 0 KB -

Subtask #2
0 / 9.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 6492 KB Output is correct
2 Incorrect 2 ms 6492 KB Output isn't correct
3 Halted 0 ms 0 KB -

Subtask #3
0 / 84.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 6492 KB Output is correct
2 Incorrect 2 ms 6492 KB Output isn't correct
3 Halted 0 ms 0 KB -