QOJ.ac
QOJ
| ID | Problem | Submitter | Result | Time | Memory | Language | File size | Submit time | Judge time |
|---|---|---|---|---|---|---|---|---|---|
| #528116 | #9158. 分数 | sumi007# | 0 | 0ms | 0kb | C++14 | 845b | 2024-08-23 09:18:28 | 2024-08-23 09:18:28 |
answer
#include <bits/stdc++.h>
using namespace std;
#define ll long long
const int N = 1e7+1;
int n,m,ans,tot,pri[N],phi[N];
ll s[N];
unordered_map<int,int> vis[N];
int f(int i,int j){
if(i==0 && j==1) return 1;
if(i>j) swap(i,j);
if((j/i)%2 == 0) return f(j%(2*i),i);
return 0;
}
void dfs(int i,int j){
if(i>n || j>m || vis[i][j]) return ;
vis[i][j] = 1,ans++,dfs(j,i),dfs(i+2*j,j);
}
int main(){
// cin.tie(0),cout.tie(0);
// ios::sync_with_stdio(0);
// prework();
cin >> n >> m;
// for(int i=1;i<=n;i++){
// for(int j=1;j<=i/2;j++){
// if(__gcd(i,j) == 1) ans = (ans+f(i,j));
// }
// for(int j=2*i;j<=m;j++){
// if(__gcd(i,j) == 1) ans = (ans+f(i,j));
// }
// }
dfs(1,2);
cout << ans;
return 0;
}
Details
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Pretests
Pretest #1:
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Final Tests
Test #1:
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Test #2:
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99 99
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output:
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output:
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output:
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output:
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output:
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Test #19:
score: 0
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Test #20:
score: 0
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input:
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