Submission #1056065

#	Time	Username	Problem	Language	Result	Execution time	Memory
1056065		fuad27	Dungeons Game (IOI21_dungeons)	C++17	89 / 100	7160 ms	1898652 KiB

dungeons

#include "dungeons.h"
#include <bits/stdc++.h>
using namespace std;
#pragma GCC optimize("Ofast")
#pragma GCC target("avx2,bmi,bmi2,lzcnt,popcnt")
const int N = 4e5+1;
const int lg = 25;
const int lgb = 12;
const int base = 4;
const long long inf = 2e9;
int up[lg][N][lgb];
int min_diff[lg][N][lgb];
long long sum[lg][N][lgb];
int n;
vector<int> s, p, w, l;
void init(int nn, std::vector<int> ss, std::vector<int> pp,
		std::vector<int> ww, std::vector<int> ll) {
	s=ss, p = pp, w = ww, l = ll;
	n = nn;
	for(int _ = 0;_<lg;_++) {
		for(int i = 0;i<=n;i++) {
			if(i == n) {
				up[_][i][0] = n;
				min_diff[_][i][0] = inf;
				sum[_][i][0] = 0;
			}
			else if(s[i] < (1ll<<_)) {
				up[_][i][0] = w[i];
				min_diff[_][i][0] = inf;
				sum[_][i][0] = s[i];
			}
			else {
				up[_][i][0] = l[i];
				min_diff[_][i][0] = s[i];
				sum[_][i][0] = p[i];
			}
		}
		for(int l = 1;l<lgb;l++) {
			for(int i = 0;i<=n;i++) {
				int at = i;
				long long sm = 0;
				long long mn_diff = inf;
				for(int k = 0;k<base;k++) {
					if(min_diff[_][at][l-1] != inf)
						mn_diff = max(0ll, min(mn_diff, min_diff[_][at][l-1]-sm));
					sm+=sum[_][at][l-1];
					at=up[_][at][l-1];
				}
				up[_][i][l] = at;
				min_diff[_][i][l] = mn_diff;
				sum[_][i][l] = sm;
			}
		}
	}
	return;
}
 
long long simulate(int x, int zz) {
	long long z = zz;
	int cnt=0;
	int idx=0;
	while(1) {
		if(x == n)break;
		cnt++;
		while((1ll<<idx) <= z) {
			idx++;
		}
		int ll = min(lg-1, idx-1);
		for(int j = lgb-1;j>=0;j--) {
			for(int _ = 1;_<base;_++) {
				if(up[ll][x][j] == n or (ll < lg-1 and min_diff[ll][x][j] <= z))continue;
				z += sum[ll][x][j];
				x = up[ll][x][j];
			}
		}
		if(s[x] <= z) {
			z+=s[x];
			x=w[x];
		}
		else if(s[x] > z) {
			z+=p[x];
			x=l[x];
		}
	}
	return z;
}

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