Submission #1058586

#	Time	Username	Problem	Language	Result	Execution time	Memory
1058586		pcc	Dungeons Game (IOI21_dungeons)	C++17	37 / 100	7021 ms	187708 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 = 20;
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];

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];
		}
	}
	/*
	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;
	*/
	return;
}

long long simulate(int x, int z) {
	int now = x;
	ll val = z;
	while(now != N){
		//cerr<<"CHALLENGE: "<<now<<":"<<val<<endl;
		for(int i = B-1;i>=0;i--){
			int pre = par[now][i];
			if(pre == -1)continue;
			if(val+pref[now]>=dp[now][i]){
				val += sum[now][i];
				now = par[now][i];
				//cerr<<"WIN: "<<now<<','<<i<<' '<<val<<endl;
			}
		}
		//cerr<<"LOST: "<<now<<' '<<val<<endl;
		val += cost[now];
		now = lose[now];
	}
	return val;
}

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