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A.cpp
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69 lines (69 loc) · 1.12 KB
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#include<stdio.h>
int main(){
int n,a,b,f=0;
scanf("%d",&n);
if(n%2==0){
a=n/2;
for(int i=2;i<a;i++){
if(a%i==0){
f=1;
b=a;
break;
}
}
if(f==0){
a-=1;
b=n-a;
for(int i=2;i<b;i++){
if(b%i==0){
f=1;
break;
}
}
if(f==0){
a-=1;
b+=1;
}
}
printf("%d %d",a,b);
}
else if(n%2==1){
a=n/2;
b=n-a;
for(int i=2;i<a;i++){
if(a%i==0){
f++;
break;
}
}
for(int i=2;i<b;i++){
if(b%i==0){
f++;
break;
}
}
if(f!=2){
a-=1;
b+=1;
f=0;
for(int i=2;i<a;i++){
if(a%i==0){
f++;
break;
}
}
for(int i=2;i<b;i++){
if(b%i==0){
f++;
break;
}
}
}
if(f!=2){
a-=1;
b+=1;
}
printf("%d %d",a,b);
}
return 0;
}