水 我发涨涨RP `#include <bits/stdc++.h> using namespace std;

int main() { int a; cin >> a; int s1, s2, s3, s4; //记录四个数位

s1 = a / 1000;
s2 = a % 1000 / 100;
s3 = a % 100 / 10;
s4 = a % 10;

//分离

s1 = (s1 + 5) % 10;
s2 = (s2 + 5) % 10;
s3 = (s3 + 5) % 10;
s4 = (s4 + 5) % 10;

//应题目加密

cout << s4 << s3 << s2 << s1;

//输出

return 0;

} `