Submission #525493

#	Time	Username	Problem	Language	Result	Execution time	Memory
525493		LucaDantas	Dungeons Game (IOI21_dungeons)	C++17	63 / 100	3936 ms	2083932 KiB

dungeons

#include "dungeons.h"
#include <vector>

constexpr int maxn = 4e5+10, logn = 24, log_lift = 11, base_lift = 4;
constexpr int inf = 0x3f3f3f3f, maxv = 1e7+10;

struct FunctionalGraph {
	int f[maxn][log_lift], mn[maxn][log_lift];
	int tab[maxn][log_lift];
	long long cost[maxn][log_lift];

	void add_i(const int& i, const int& x, const int& v, const int& st) { f[i][0] = x, cost[i][0] = v, mn[i][0] = i, tab[i][0] = st; }

	void build(int n) {
		f[n][0] = n;
		mn[n][0] = n;

		for(int l = 1; l < log_lift; l++) {
			for(int i = 0; i <= n; i++) {
				f[i][l] = i;
				tab[i][l] = tab[i][l-1];
				mn[i][l] = mn[i][l-1];

				for(int k = 0; k < base_lift; k++) {
					if(tab[i][l] > tab[f[i][l]][l-1] - cost[i][l]) {
						mn[i][l] = mn[f[i][l]][l-1];
						if(tab[f[i][l]][l-1] < maxv)
							tab[i][l] = std::max(0ll, tab[f[i][l]][l-1] - cost[i][l]);
					}
					cost[i][l] += cost[f[i][l]][l-1];
					f[i][l] = f[f[i][l]][l-1];
				}
			}
		}
	}

	void go(int& x, long long& val) {
		for(int l = log_lift-1; l >= 0; l--)
			for(int k = 0; k < base_lift-1; k++)
				if(tab[x][l] >  val || tab[x][l] >= maxv) val += cost[x][l], x = f[x][l];
	}
} graph[logn];

int N;

void init(int n, std::vector<int> s, std::vector<int> p, std::vector<int> w, std::vector<int> l) {
	N = n;
	for(int lg = 0; lg < logn; lg++) {
		for(int i = 0; i < n; i++) {
			if(s[i] < (2<<lg)) graph[lg].add_i(i, w[i], s[i], inf);
			else graph[lg].add_i(i, l[i], p[i], s[i]);
		}
		graph[lg].build(n);
	}
	return;
}

long long simulate(int x, int z) {
	if(N > (int)1e5) return 0;
	long long val = z;
	for(int lg = 0; lg < logn; lg++)
		if(x != N) graph[lg].go(x, val);
	return val;
}

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