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Letters Collection.cpp
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Letters Collection.cpp
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class Solution{
public:
vector<int> matrixSum(int n, int m, vector<vector<int>> mat, int q, vector<int> queries[])
{
// code here
vector<int>ans;
for(int iq=0;iq<q;iq++)
{
int i=queries[iq][1];
int j=queries[iq][2];
int sum=0;
if(queries[iq][0]==1)
{
if(i-1>=0 && j-1>=0)
sum+=mat[i-1][j-1];
if(i-1>=0)
sum+=mat[i-1][j];
if(i-1>=0 && j+1<m)
sum+=mat[i-1][j+1];
if(j+1<m)
sum+=mat[i][j+1];
if(j-1>=0)
sum+=mat[i][j-1];
if(i+1<n && j-1>=0)
sum+=mat[i+1][j-1];
if(i+1<n)
sum+=mat[i+1][j];
if(i+1<n && j+1<m)
sum+=mat[i+1][j+1];
}
else
{
if(i-2>=0 && j-2>=0)
sum+=mat[i-2][j-2];
if(i-2>=0 && j-1>=0)
sum+=mat[i-2][j-1];
if(i-2>=0 && j+1<m)
sum+=mat[i-2][j+1];
if(i-2>=0 && j+2<m)
sum+=mat[i-2][j+2];
if(i-2>=0)
sum+=mat[i-2][j];
if(i+2<n)
sum+=mat[i+2][j];
if(i-1>=0 && j-2>=0)
sum+=mat[i-1][j-2];
if(i+1<n && j-2>=0)
sum+=mat[i+1][j-2];
if(i-1>=0 && j+2<m)
sum+=mat[i-1][j+2];
if(j-2>=0)
sum+=mat[i][j-2];
if(j+2<m)
sum+=mat[i][j+2];
if(i+1<n && j+2<m)
sum+=mat[i+1][j+2];
if(i+2<n && j-2>=0)
sum+=mat[i+2][j-2];
if(i+2<n && j-1>=0)
sum+=mat[i+2][j-1];
if(i+2<n && j+1<m)
sum+=mat[i+2][j+1];
if(i+2<n && j+2<m)
sum+=mat[i+2][j+2];
}
ans.push_back(sum);
}
return ans;
}
};