26 lines
296 B
C++
26 lines
296 B
C++
#include<iostream>
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using namespace std;
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int is_sushu(int n){
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for(int i = 2;i*i<n;i++){
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if(n%i == 0){
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return 0;
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}
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}
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return 1;
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}
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int main(){
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int n;
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cin >> n;
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for(int i = 2;i<=n/2;i++){
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if(is_sushu(i)&&is_sushu(n-i)){
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cout << i << " " << n - i << endl;
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}
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}
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return 0;
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}
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