Submission #858173

#	Time	Username	Problem	Language	Result	Execution time	Memory
858173		sofijavelkovska	Chess Rush (CEOI20_chessrush)	C++14	0 / 100	2 ms	4444 KiB

chessrush

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

const int MOD=1e9+7, MAXN=100;

int m, n, s, e;
int memo[MAXN][MAXN][3*MAXN];
int adj[8][2]={{1,0},{0,1},{-1,0},{0,-1},{1,-1},{-1,1},{1,1},{-1,-1}};

int dp(int x, int y, int moves)
{
    if (x>=m || x<0 || y>=n || y<0)
        return 0;
    if (x==0 && y==s)
        return 1;
    if (moves==0)
        return 0;
    if (memo[x][y][moves]!=-1)
        return memo[x][y][moves];
    int total=0;
    for (int i=0; i<8; i++)
        total=(total+dp(x+adj[i][0], y+adj[i][1], moves-1))%MOD;

    return memo[x][y][moves]=total;
}

int main()
{
    //ios_base::sync_with_stdio(0);
    //cin.tie(0);

    int q;
    char type;
    cin >> m >> n >> q;
    while (q--)
    {
        cin >> type >> s >> e;
        s=s-1;
        e=e-1;
        if (s>e)
            swap(s, e);
        int w=e-s;
        int h=m-1-w;
        for (int i=0; i<n; i++)
            for (int j=0; j<n; j++)
                for (int k=0; k<3*n; k++)
                    memo[i][j][k]=-1;
        cout << w+h << " " << dp(m-1, e, w+h) << '\n';
    }

    return 0;
}

• Subtask 1: 0 / 0
• Subtask 2: 0 / 8
• Subtask 3: 0 / 15
• Subtask 4: 0 / 22
• Subtask 5: 0 / 5
• Subtask 6: 0 / 8
• Subtask 7: 0 / 15
• Subtask 8: 0 / 20
• Subtask 9: 0 / 7