添加链接描述 #include<bits/stdc++.h>
using namespace std;
typedef long long ll;
#define int long long
bool is(ll n){ if(n<=1)return 0; for(int i=2;i<=n/i;i++){ if(n%i==0)return 0; } return 1;
}
signed main(...
Suppose you have a special?xx-yy-counter. This counter can store some value as a decimal number; at first, the counter has value?00. The counter performs the following algorithm: it prints its lowest digit and, after that, adds either?xx?or?yy?to its val...
题意： 给出一个有 n n n个元素的数组 a a a和一个常数 s s s，将每个元素 a i a_{i} ai?分解为两个数 x i , y i x_{i},y_{i} xi?,yi?，满足 x i + y i = a i x i ≥ 0 y i ≥ 0 ( x i ? s ) ? ( y i ? s ) ≥ 0 x_{i}+y_{i}=a_{i}\\ x_{...
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