View Compilation Error

0_0_25994622_26126.cpp:23:1: error: 'll' does not name a type
 ll dp[6500][85][85]; 
 ^
0_0_25994622_26126.cpp: In function 'int _dp(int, int, int)':
0_0_25994622_26126.cpp:29:8: error: 'dp' was not declared in this scope
     if(dp[x][a][b]!=-1)return dp[x][a][b];
        ^
0_0_25994622_26126.cpp:32:5: error: 'll' was not declared in this scope
     ll ans=0;
     ^
0_0_25994622_26126.cpp:33:5: error: 'ans' was not declared in this scope
     ans=((long long)_dp(x+1,a-1,b)*(n-a+1)*b+(long long)_dp(x+1,a,b-1)*(m-b+1)*a);
     ^
0_0_25994622_26126.cpp:36:12: error: 'dp' was not declared in this scope
     return dp[x][a][b]=ans%K;
            ^
0_0_25994622_26126.cpp: In function 'int main()':
0_0_25994622_26126.cpp:49:21: error: 'dp' was not declared in this scope
                     dp[i][j][k]=-1;
                     ^
0_0_25994622_26126.cpp:50:9: error: 'dp' was not declared in this scope
         dp[n*m][1][1]=n*m;
         ^