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25 lines
541 B
C++
25 lines
541 B
C++
#include <cstdio>
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int n, ans;
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inline int num2stk(int x)
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{
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const static int H[] = {6, 2, 5, 5, 4, 5, 6, 3, 7, 6};
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int ret = 0;
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if (x == 0)
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ret = 6;
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else
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while (x) ret += H[x % 10], x /= 10;
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return ret;
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}
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int main()
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{
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scanf("%d", &n);
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n -= 4;
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if (n > 0)
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for (int i = 0; i <= 1000; i++)
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for (int j = 0; j <= 1000; j++)
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if (num2stk(i) + num2stk(j) + num2stk(i + j) == n)
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ans++;
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printf("%d", ans);
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return 0;
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}
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