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LeetCode 790 - Domino and Tromino Tiling #8

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LeetCode 790 - Domino and Tromino Tiling #8

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18 changes: 18 additions & 0 deletions 790_Domino_and_Tromino_Tiling
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LeetCode 790: Domino and Tromino Tiling
C++
===================================================

class Solution {
public:
int mod=1000000007;
int numTilings(int n) {
if(n==1 || n==2) return n;

long dp[1002]={1,1,2};
for(int i=3;i<=n;i++)
{
dp[i]=(2*dp[i-1]+dp[i-3])%mod;
}
return dp[n];
}
};