제출 #1042082

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
1042082		0npata	Dungeons Game (IOI21_dungeons)	C++17	0 / 100	7 ms	47996 KiB

dungeons

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

#define int long long
#define vec vector

const int MXN = 50'005;
const int LOGN = 18;
const int LOGS = 24;

struct Data {
    int mnt;
    int sum;
    int v;
};

Data binjmps[LOGS][MXN][LOGN];

int n;
vec<int32_t> s;
vec<int32_t> p;
vec<int32_t> w;
vec<int32_t> l;

const int MXS = 1e7+5;

void init(int32_t n_i, std::vector<int32_t> s_i, std::vector<int32_t> p_i, std::vector<int32_t> w_i, std::vector<int32_t> l_i) {
    // preprocessing fill in binjmps
    s =  s_i;
    s.push_back(0);
    p = p_i;
    w = w_i;
    w.push_back(n_i);
    l = l_i;
    n = n_i;

    for(int i = 0; i<LOGS; i++) {
        for(int j = 0; j<=n; j++) {
            if(s[j] > (1<<i)) {
                binjmps[i][j][0] = {s[j], p[j], l[j]};
            }
            else {
                binjmps[i][j][0] = {MXS, s[j], w[j]};
            }
        }
        for(int k = 1; k<LOGN; k++) {
            for(int j = 0; j<=n; j++) {
                auto nxt = binjmps[i][binjmps[i][j][k-1].v][k-1];
                auto me = binjmps[i][j][k-1];

                me = {min(me.mnt, nxt.mnt+me.sum), me.sum+nxt.sum, nxt.v};
            }
        }
    }

	return;
}

long long simulate(int32_t u, int32_t z) {
    int cur_s = z;
    for(int32_t i = 0; i<LOGS; i++) {
        for(int32_t j = LOGN-1; j>=0; j--) {
            if(binjmps[i][u][j].mnt > cur_s) {
                cur_s += binjmps[i][u][j].sum;
                u = binjmps[i][u][j].v;
            }
        }
    }

    return cur_s;
}

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