Codeforces Round #433 (Div. 2, based on Olympiad of Metropolises) A. Fraction

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题意:2个数A,B,A+B==n,并且A<B,问最大的A/B是多少,A与B互质

 1 #include<bits/stdc++.h>
 2 using namespace std;
 3 const int N=1e5+100;
 4 typedef long long ll;
 5 
 6 
 7 int main(){
 8     int n;
 9     cin>>n;
10     for(int i=n/2;i>=1;i--){
11         int y=n-i;
12         if(__gcd(i,y)==1){
13             cout<<i<<" "<<y<<endl;return 0;
14         }
15     }
16 }

 

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