제출 #794449

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
794449		finn__	Dungeons Game (IOI21_dungeons)	C++17	11 / 100	7112 ms	548196 KiB

dungeons

#include <bits/stdc++.h>

#include "dungeons.h"

using namespace std;

constexpr size_t N = 50001, K = 26;

size_t n;
uint32_t f[K + 1][K][N], m[K + 1][K][N];
uint64_t u[K + 1][K][N];
vector<int> s, p, w, l;

void init(int n_, vector<int> s_, vector<int> p_, vector<int> w_, vector<int> l_)
{
    n = n_;
    s = move(s_);
    p = move(p_);
    w = move(w_);
    l = move(l_);

    for (size_t k = 0; k < K; ++k)
    {
        for (size_t i = 0; i < n; ++i)
        {
            if (s[i] < 1 << k)
                f[k][0][i] = w[i], u[k][0][i] = m[k][0][i] = s[i];
            else
                f[k][0][i] = l[i], u[k][0][i] = p[i], m[k][0][i] = s[i];
        }
        f[k][0][n] = n;
        u[k][0][n] = 0;
        m[k][0][n] = UINT32_MAX;
        for (size_t j = 1; j < K; ++j)
            for (size_t i = 0; i < n; ++i)
            {
                size_t const intermediate = f[k][j - 1][i];
                f[k][j][i] = f[k][j - 1][intermediate];
                u[k][j][i] = u[k][j - 1][i] + u[k][j - 1][intermediate];
                if (intermediate == n)
                    m[k][j][i] = UINT32_MAX;
                m[k][j][i] = min<uint64_t>(m[k][j - 1][i], m[k][j - 1][intermediate] - min<uint64_t>(m[k][j - 1][intermediate], u[k][j - 1][i]));
            }
    }
}

long long simulate(int x, int z)
{
    long long strength = z;

    while (x != n)
    {
        size_t k = min<size_t>(K - 1, __lg(strength));
        for (size_t j = K - 1; j < K; --j)
            if (m[k][j][x] > strength)
            {
                strength += u[k][j][x];
                x = f[k][j][x];
                break;
            }
        if (x != n)
        {
            if (strength >= s[x])
            {
                strength += s[x];
                x = w[x];
            }
            else
            {
                strength += p[x];
                x = l[x];
            }
        }
    }

    return strength;
}

컴파일 시 표준 에러 (stderr) 메시지

dungeons.cpp: In function 'long long int simulate(int, int)':
dungeons.cpp:51:14: warning: comparison of integer expressions of different signedness: 'int' and 'size_t' {aka 'long unsigned int'} [-Wsign-compare]
   51 |     while (x != n)
      |            ~~^~~~
dungeons.cpp:61:15: warning: comparison of integer expressions of different signedness: 'int' and 'size_t' {aka 'long unsigned int'} [-Wsign-compare]
   61 |         if (x != n)
      |             ~~^~~~

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