Submission #1161354

#	Time	Username	Problem	Language	Result	Execution time	Memory
1161354		Wansur	Dungeons Game (IOI21_dungeons)	C++20	37 / 100	7107 ms	1823580 KiB

dungeons

#include <bits/stdc++.h>
#include "dungeons.h"

#define ent '\n'

using namespace std;

typedef long long ll;

const int maxn = 4e5 + 12;

int s[maxn], p[maxn], w[maxn], l[maxn];
ll sum[12][24][maxn];
int mn[12][24][maxn];
int up[12][24][maxn], pw[maxn];
int n;

void init(int N, vector<int> S, vector<int> P, vector<int> W, vector<int> L) {
    n = N;
    pw[0] = 2;
    for(int i = 1; i < 12; i++) {
        pw[i] = pw[i - 1] * 5;
    }
    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 b = 0; b < 12; b++) {
        up[b][0][n] = n;
        mn[b][0][n] = -1e18;
        for(int i = 0; i < n; i++) {
            if(s[i] < pw[b]) {
                up[b][0][i] = w[i];
                mn[b][0][i] = 1e18;
                sum[b][0][i] = s[i];
            }
            else {
                up[b][0][i] = l[i];
                mn[b][0][i] = s[i];
                sum[b][0][i] = p[i];
            }
        }

        for(int k = 1; k < 24; k++) {
            for(int i = 0; i <= n; i++) {
                up[b][k][i] = up[b][k - 1][up[b][k - 1][i]];
                mn[b][k][i] = min(mn[b][k - 1][i] * 1ll, max(0ll, mn[b][k - 1][up[b][k - 1][i]] - sum[b][k - 1][i]));
                sum[b][k][i] = sum[b][k - 1][i] + sum[b][k - 1][up[b][k - 1][i]];
            }
        }
    }
}

ll simulate(int x, int val) {
    ll cur = val;

    while(x < n) {
        int b = 0;
        while(b + 1 < 12 && cur >= pw[b + 1] - 1) {
            b++;
        }
        for(int k = 23; k >= 0; k--) {
            if(mn[b][k][x] > cur) {
                cur += sum[b][k][x];
                x = up[b][k][x];
            }
        }
        if(x == n) break;
        if(cur >= s[x]) {
            cur += s[x];
            x = w[x];
        }
        else {
            cur += p[x];
            x = l[x];
        }
    }
    return cur;
}

Compilation message (stderr)

dungeons.cpp: In function 'void init(int, std::vector<int>, std::vector<int>, std::vector<int>, std::vector<int>)':
dungeons.cpp:30:23: warning: overflow in conversion from 'double' to 'int' changes value from '-1.0e+18' to '-2147483648' [-Woverflow]
   30 |         mn[b][0][n] = -1e18;
      |                       ^~~~~
dungeons.cpp:34:31: warning: overflow in conversion from 'double' to 'int' changes value from '1.0e+18' to '2147483647' [-Woverflow]
   34 |                 mn[b][0][i] = 1e18;
      |                               ^~~~

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