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- #include <bits/stdc++.h>
- using namespace std;
- char mat[1010][1010];
- long long dp[1010][1010];
- long long mod = 1000000007;
- int main()
- {
- ios_base::sync_with_stdio(false);
- cin.tie(NULL);
- int n, m;
- cin >> n >> m;
- for(int i = 0; i < n; i++)
- for(int j = 0; j < m; j++)
- cin >> mat[i][j];
- for(int i = 0; i < n; i++) {if(mat[i][0] == '.') dp[i][0] = 1; else break;}
- for(int j = 0; j < m; j++) {if(mat[0][j] == '.') dp[0][j] = 1; else break;}
- for(int i = 1; i < n; i++)
- {
- for(int j = 1; j < m; j++)
- {
- if(mat[i][j] == '.')
- dp[i][j] = dp[i-1][j] + dp[i][j-1];
- dp[i][j] %= mod;
- }
- }
- cout << dp[n-1][m-1];
- return 0;
- }
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