Submission #1058798

#	Time	Username	Problem	Language	Result	Execution time	Memory
1058798		pcc	Dungeons Game (IOI21_dungeons)	C++17	0 / 100	65 ms	158840 KiB

dungeons

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

#define ll long long
#define pii pair<int,int>
#define fs first
#define sc second
#define pll pair<ll,ll>

const int B = 22;
const int mxn = 4e5+10;

int par[mxn][B];
ll dp[mxn][B];
ll sum[mxn][B];
ll pref[mxn];
int N;
int str[mxn],win[mxn],lose[mxn],cost[mxn];

struct JELLY{
	int par[mxn][B];
	ll sum[mxn][B];
	JELLY(){
		memset(par,-1,sizeof(par));
		memset(sum,0,sizeof(sum));
	}
	void build(){
		for(int i = 1;i<B;i++){
			for(int j = 0;j<N;j++){
				int pre = par[j][i-1];
				if(pre == -1)continue;
				par[j][i] = par[par[j][i-1]][i-1];
				sum[j][i] = sum[j][i-1]+sum[pre][i-1];
			}
		}
		return;
	}
};

JELLY jel;

void init(int n, std::vector<int> s, std::vector<int> p, std::vector<int> w, std::vector<int> l) {
	memset(par,-1,sizeof(par));
	N = n;
	for(int i = 0;i<N;i++){
		str[i] = s[i];
		cost[i] = p[i];
		win[i] = w[i];
		lose[i] = l[i];
	}
	win[N] = lose[N] = N;
	for(int i = 0;i<B;i++){
		par[N][i] = -1;
	}
	for(int i = N-1;i>=0;i--){
		pref[i] = str[i]+pref[win[i]];
		dp[i][0] = str[i]+pref[i];
		par[i][0] = win[i];
		sum[i][0] = str[i];
		for(int j = 1;j<B;j++){
			int pre = par[i][j-1];
			if(pre == -1)continue;
			par[i][j] = par[par[i][j-1]][j-1];
			dp[i][j] = max(dp[i][j-1],dp[par[i][j-1]][j-1]);
			sum[i][j] = sum[i][j-1]+sum[par[i][j-1]][j-1];
		}
	}
	for(int i = 0;i<N;i++){
		jel.sum[i][0] = cost[i];
		jel.par[i][0] = lose[i];
	}
	jel.build();
	/*
	cerr<<"PAR: "<<endl;for(int i = 0;i<N;i++){
		for(int j = 0;j<B;j++)cerr<<par[i][j]<<' ';cerr<<endl;
	}
	cerr<<"DP: "<<endl;for(int i = 0;i<N;i++){
		for(int j = 0;j<B;j++)cerr<<dp[i][j]<<' ';cerr<<endl;
	}
	cerr<<"SUM: "<<endl;for(int i = 0;i<N;i++){
		for(int j = 0;j<B;j++)cerr<<sum[i][j]<<' ';cerr<<endl;
	}
	cerr<<"PREF: "<<endl;for(int i = 0;i<=N;i++)cerr<<pref[i]<<' ';cerr<<endl;
	cerr<<"JEL PAR: "<<endl;for(int i = 0;i<N;i++){
		for(int j = 0;j<B;j++)cerr<<jel.par[i][j]<<' ';cerr<<endl;
	}
	*/
	return;
}

long long simulate(int x, int z) {
	int now = x;
	ll val = z;
	for(int i = B-1;i>=0;i--){
		int pre = jel.par[now][i];
		if(pre == -1)continue;
		if(val+jel.sum[now][i]<str[0]){
			val += jel.sum[now][i];
			now = jel.par[now][i];
			//cerr<<"LOSE: "<<i<<' '<<now<<','<<val<<endl;
		}
	}
	if(val<str[0]){
		val += cost[now];
		now = lose[now];
	}
	val += pref[now];
	return val;
}

• Subtask 1: 0 / 11
• Subtask 2: 0 / 26
• Subtask 3: 0 / 13
• Subtask 4: 0 / 12
• Subtask 5: 0 / 27
• Subtask 6: 0 / 11