main
黄海 1 year ago
parent e5e907beae
commit a66b1df1c6

@ -0,0 +1,20 @@
#include <bits/stdc++.h>
using namespace std;
int main() {
int n, m;
cin >> n >> m;
int cnt = 0;
for (int i = n; i <= m; i++) {
int x = i;
bool flag = false;
while (x) {
int a = x % 10;
if (a % 2 == 0) flag = true;
x /= 10;
}
if (!flag) cnt++;
}
cout << cnt << endl;
return 0;
}

@ -0,0 +1,18 @@
#include <iostream>
using namespace std;
int main() {
int n, cnt = 0;
cin >> n;
cnt = n / 3;
if (n == 2)
cnt = -1;
else if (n == 4)
cnt = 4;
else if (n % 3 == 1)
cnt += 1;
else if (n % 3 == 2)
cnt += 2;
cout << cnt << endl;
return 0;
}

@ -0,0 +1,3 @@
https://blog.csdn.net/qq_36230375/article/details/134725732
https://tiku.scratchor.com/paper/view/gjfvsjrgtpm30v3f
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