30 lines
514 B
C++
30 lines
514 B
C++
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#include <bits/stdc++.h>
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using namespace std;
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int x[4][5] = {{},{0,3,2,1,5},{0,7,1,2,8},{0,1,3,4,6}};
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int prefix[4][5];
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int sum[4][5];
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int main()
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{
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for(int i=1;i<=3;i++)
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{
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for(int j=1;j<=4;j++)
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{
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//todo
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prefix[i][j]=prfix[i-1][j]+prefix[i][j-1]-prefix[i-1][j-1]+x[i][j];
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}
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}
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for(int i=1;i<=3;i++)
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{
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for(int j=1;j<=4;j++)
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{
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cout<<prefix[i][j]<<" ";
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}
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cout<<endl;
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}
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int a=1,b=1,A=3,B=4;
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int ans=prefix[A][B]-prefix[A][b-1]-prefix[a-1][B]+prefix[a-1][b-1];
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cout<<ans;
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return 0;
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}
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