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Leetcode #62: Unique Paths
class Solution {
public:
int uniquePaths(int m, int n) {
vector<vector<int>> dp(n, vector<int>(m));
for (int i=0; i<n; i++) {
dp[i][0] = 1;
}
for (int j=0; j<m; j++) {
dp[0][j] = 1;
}
for (int i=1; i<n; i++) {
for (int j=1; j<m; j++) {
dp[i][j] = dp[i-1][j] + dp[i][j-1];
}
}
return dp[n-1][m-1];
}
};
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