20 lines
387 B
C++
20 lines
387 B
C++
#include <bits/stdc++.h>
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using namespace std;
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const int N = 10;
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int a[N][N];
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int main() {
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int n = 3;
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for (int i = 1; i <= n; i++)
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for (int j = 1; j <= n; j++)
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cin >> a[i][j];
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int s = 0;
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for (int i = 1; i <= n; i++)
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for (int j = 1; j <= n; j++)
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if (i == j) s += a[i][j];
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cout << s << endl;
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return 0;
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} |