25 lines
466 B
C++
25 lines
466 B
C++
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#include <bits/stdc++.h>
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using namespace std;
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bool judge(int x) {
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while (x > 0) {
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if (x % 10 == 7) {
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return true;
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}
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x /= 10;
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}
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return false;
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}
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int main() {
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int L, R, cnt;
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scanf("%d%d", &L, &R);
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for (int i = L; i <= R; i++) {
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if (judge(i)) {
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printf("%d\n", i);
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cnt++;
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}
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}
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if (cnt == 0) {
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printf("None\n");
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}
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return 0;
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}
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