Submission #588864

#	Time	Username	Problem	Language	Result	Execution time	Memory
588864		Tekor	Sprinkler (JOI22_sprinkler)	C++17	12 / 100	2318 ms	75636 KiB

sprinkler

#include <bits/stdc++.h>
using namespace std;
#define pb push_back
#define mp make_pair
#define ll long long
#define f first
#define s second
#define pii pair <int,int>
#define en '\n'
void boos() {
	ios_base :: sync_with_stdio(0);
	cin.tie(0);
	cout.tie(0);
}
const int N = 4e5 + 100;
vector <int> g[N];
pii c[N];
ll a[N],L;
int d[N][50];
int n;
void dfs(int v,int p,int k) {
	for(auto to : g[v]) {
		d[to][k - 1] = min(d[to][k - 1],d[v][k]);
		if(to == p)continue;
		dfs(to,v,k);
	}
}
void solve() {
	cin >> n >> L;
	for(int i = 1;i <= n;i++) {
		for(int j = 0;j <= 40;j++)d[i][j] = N;
	}
	for(int i = 1;i < n;i++) {
		int x,y;
		cin >> x >> y;
		g[x].pb(y);
		g[y].pb(x);
	}
	for(int i = 1;i <= n;i++)cin >> a[i];
	int q;
	cin >> q;
	int l = 1;
	for(int i = 1;i <= q;i++) {
		cin >> c[i].f;
		if(c[i].f == 1) {
			int x,dist;
			ll w;
			cin >> x >> dist >> w;
			for(int j = dist;j >= 0;j--)d[x][j] = min(d[x][j],i);
		}else cin >> c[i].s;
		
	}
	for(int i = 40;i >= 1;i--)dfs(1,-1,i);
	for(int i = 1;i <= n;i++) {
		for(int j = 39;j >= 0;j--) {
			d[i][j] = min(d[i][j],d[i][j + 1]);
		}
	}
	for(int i = 1;i <= q;i++) {
		if(c[i].f == 2) {
			if(d[c[i].s][0] <= i) {
				cout << 0 << en;
			}else {
				cout << a[c[i].s] << en;
			}
		}
	}
}

int main() {
	boos();
	int ttt;
	ttt = 1;
	while(ttt--) {
		solve();
	}
}

Compilation message (stderr)

sprinkler.cpp: In function 'void solve()':
sprinkler.cpp:42:6: warning: unused variable 'l' [-Wunused-variable]
   42 |  int l = 1;
      |      ^

• Subtask 1: 0 / 3
• Subtask 2: 0 / 9
• Subtask 3: 0 / 29
• Subtask 4: 12 / 12
• Subtask 5: 0 / 30
• Subtask 6: 0 / 17