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9 lines
240 B
C++
9 lines
240 B
C++
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#include <iostream>
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using namespace std;
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int main()
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{
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int n,a[25]={0,0,0,4,6,0,0,12,40,0,0,171,410,0,0,1896,5160,0,0,32757,59984,0,0,431095,822229};
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while (cin >> n && n!=0) cout << n << " " << a[n] << endl;
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return 0;
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}
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