Submission #762118

#	Time	Username	Problem	Language	Result	Execution time	Memory
762118		raysh07	Prisoner Challenge (IOI22_prison)	C++17	0 / 100	1 ms	212 KiB

prison

#include <bits/stdc++.h>
using namespace std;
//#define int long long
 
mt19937_64 RNG(chrono::steady_clock::now().time_since_epoch().count());
 
vector<vector<int>> devise_strategy(int N)
{
    int n = N;
    int x = 29;
    vector<vector<int>> s(x, vector<int>(N + 1));
    for (int i=0; i<x; i++)
    {
        for (int j=0; j<=n; j++)
        {
            if (j==0 && i%4==0)
            {
                s[i][j] = 0;
            }
            else if (j==0)
            {
                s[i][j] = 1;
            }
            else if (i%4==0)
            {
                int x = i/4;
                x = 7-x;
                int copy = j;
                while (x--)
                {
                    copy/=3;
                }
                s[i][j] = copy%3;
            }
            else 
            {
                int x = i/4;
                x = 7-x;
                int y = i%4 - 1;
                int copy = j;
                while (x--)
                {
                    copy/=3;
                }
                int z = copy%3;
                if (z==x)
                {
                    s[i][j] = (x+1)*4;
                }
                else if (z<x)
                {
                    s[i][j] = -2;
                }
                else 
                {
                    s[i][j] = -1;
                }
            }
        }
    }
    return s;
}
 
// int32_t main() 
// {
//     auto begin = std::chrono::high_resolution_clock::now();
//     ios_base::sync_with_stdio(0);
//     cin.tie(0);
//     int t = 1;
//     //cin >> t;
//     for(int i = 1; i <= t; i++) 
//     {
//         //cout << "Case #" << i << ": ";
//         Solve();
//     }
//     auto end = std::chrono::high_resolution_clock::now();
//     auto elapsed = std::chrono::duration_cast<std::chrono::nanoseconds>(end - begin);
//     cerr << "Time measured: " << elapsed.count() * 1e-9 << " seconds.\n"; 
//     return 0;
// }

Compilation message (stderr)

prison.cpp: In function 'std::vector<std::vector<int> > devise_strategy(int)':
prison.cpp:39:21: warning: unused variable 'y' [-Wunused-variable]
   39 |                 int y = i%4 - 1;
      |                     ^

• Subtask 1: 0 / 5
• Subtask 2: 0 / 5
• Subtask 3: 0 / 90