20 lines
365 B
C++
20 lines
365 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 b[N];
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int main() {
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int n, x;
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scanf("%d %d", &n, &x);
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for (int i = 1; i <= n; i++) {
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int tmp = i, num;
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while (tmp > 0) {
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num = tmp % 10;
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b[num]++;
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tmp /= 10;
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}
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}
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printf("%d", b[x]);
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return 0;
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} |