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P1590 失踪的7 [70' Code]

R38866815
This commit is contained in:
Baoshuo Ren 2020-09-26 19:39:31 +08:00 committed by Baoshuo Ren
parent 1886b86fde
commit 107a13d7bd
Signed by: baoshuo
GPG Key ID: 70F90A673FB1AB68

31
problem/P1590/P1590.cpp Normal file
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// 70' Code (R38866815)
#include <bits/stdc++.h>
using namespace std;
bool find(int s, int x) {
while (s) {
if (s % 10 == x) {
return true;
}
s /= 10;
}
return false;
}
int main() {
int t, n, ans;
cin >> t;
for (int i = 0; i < t; i++) {
cin >> n;
ans = 0;
for (int i = 1; i <= n; i++) {
if (!find(i, 7)) {
ans++;
}
}
cout << ans << endl;
}
return 0;
}