Submission #563238

#	Time	Username	Problem	Language	Result	Execution time	Memory
563238		hoanghq2004	Dungeons Game (IOI21_dungeons)	C++17	100 / 100	6597 ms	1401408 KiB

dungeons

#include <bits/stdc++.h>
#pragma GCC optimize ("O3")
#pragma GCC optimize ("unroll-loops")
#include <ext/pb_ds/assoc_container.hpp>
#include <ext/pb_ds/tree_policy.hpp>
#include "dungeons.h"

using namespace __gnu_pbds;
using namespace std;

template <typename T>
using ordered_set = tree <T, null_type, less <T>, rb_tree_tag, tree_order_statistics_node_update>;

const int N = 4e5 + 10;

int n;
int s[N], p[N], w[N], l[N];
int nxt[N][7][25];
long long dmin[N][7][25];
long long sum[N][7][25];
vector <long long> pivot;

void init(int _n, std::vector<int> S, std::vector<int> P, std::vector<int> W, std::vector<int> L) {
    n = _n;
    for (int i = 0; i < n; ++i) s[i] = S[i], p[i] = P[i], w[i] = W[i], l[i] = L[i];
    for (int i = 0; i < 7; ++i) pivot.push_back(1 << i * 4);
    pivot.push_back(1e18);
    for (int b = 0; b + 1 < pivot.size(); ++b) {
        for (int i = 0; i < n; ++i) {
            if (s[i] <= pivot[b]) {
                nxt[i][b][0] = w[i];
                dmin[i][b][0] = 1e18;
                sum[i][b][0] = s[i];
            } else {
                nxt[i][b][0] = l[i];
                dmin[i][b][0] = s[i];
                sum[i][b][0] = p[i];
            }
        }
        nxt[n][b][0] = n;
        for (int lg = 1; lg < 25; ++lg) {
            for (int i = 0; i <= n; ++i) {
                nxt[i][b][lg] = nxt[nxt[i][b][lg - 1]][b][lg - 1];
                sum[i][b][lg] = sum[i][b][lg - 1] + sum[nxt[i][b][lg - 1]][b][lg - 1];
                dmin[i][b][lg] = min(dmin[i][b][lg - 1], dmin[nxt[i][b][lg - 1]][b][lg - 1] - sum[i][b][lg - 1]);
            }
        }
    }
}

long long simulate(int i, int z) {
    long long cur = z;
    int b = 0;
    while (b + 1 < pivot.size()) {
        if (cur >= pivot[b + 1]) {
            ++b;
            continue;
        }
        for (int lg = 24; lg >= 0; --lg) {
            if (nxt[i][b][lg] == n || dmin[i][b][lg] - cur <= 0) continue;
            cur += sum[i][b][lg];
            i = nxt[i][b][lg];
        }
        if (cur >= s[i]) {
            cur += s[i];
            i = w[i];
        } else {
            cur += p[i];
            i = l[i];
        }
        if (i == n) return cur;
    }
    return cur;
}

//int main() {
//    freopen("test.inp", "r", stdin);
//    freopen("test.out", "w", stdout);
//    int n, q;
//    std::vector<int> s, p, z;
//    std::vector<int> w, l, x;
//    std::vector<long long> answer;
//
//	assert(scanf("%d %d", &n, &q) == 2);
//	s.resize(n);
//	p.resize(n);
//	w.resize(n);
//	l.resize(n);
//    x.resize(q);
//    z.resize(q);
//    answer.resize(q);
//
//	for (int i = 0; i < n; i++) {
//		assert(scanf("%d", &s[i]) == 1);
//	}
//	for (int i = 0; i < n; i++) {
//		assert(scanf("%d", &p[i]) == 1);
//	}
//	for (int i = 0; i < n; i++) {
//		assert(scanf("%d", &w[i]) == 1);
//	}
//	for (int i = 0; i < n; i++) {
//		assert(scanf("%d", &l[i]) == 1);
//	}
//
//
//    init(n, s, p, w, l);
//
//    for (int i = 0; i < q; i++) {
//		assert(scanf("%d %d", &x[i], &z[i]) == 2);
//		answer[i] = simulate(x[i], z[i]);
//    }
//    fclose(stdin);
//
//    for (int i = 0; i < q; i++) {
//        printf("%lld\n", answer[i]);
//    }
//    fclose(stdout);
//    return 0;
//}

Compilation message (stderr)

dungeons.cpp: In function 'void init(int, std::vector<int>, std::vector<int>, std::vector<int>, std::vector<int>)':
dungeons.cpp:28:27: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<long long int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   28 |     for (int b = 0; b + 1 < pivot.size(); ++b) {
      |                     ~~~~~~^~~~~~~~~~~~~~
dungeons.cpp: In function 'long long int simulate(int, int)':
dungeons.cpp:54:18: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<long long int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   54 |     while (b + 1 < pivot.size()) {
      |            ~~~~~~^~~~~~~~~~~~~~

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