//简单
#include <stdio.h>
#include <math.h>
int sushu(int a);
int main(){
int x;
scanf("%d",&x);
for(int x1=3;x1<=(x/2);x1++){
int x2=x-x1;
if(sushu(x1)==1&&sushu(x2)==1)
printf("%d+%d=%d\n",x1,x2,x);
}
return 0;

}
int sushu(int a){
for (int i = 2; i <= sqrt(a); i++) {
if (a % i == 0)
return 0;
}
return 1;
}

#define _CRT_SECURE_NO_WARNINGS
#include<stdio.h>
int main()
{
int n, a, i, x1, x2, t;
scanf("%d", &n);
for (i = 2; i <= n / 2; i++)
{
t = 1;
for(a = 2; a < i; a++)
{
if (i % a == 0)
{
t = 0;
break;
}
}
if (t == 0)
continue;
else
{
x1 = i;
x2 = n - x1;

for (a = 2; a < x2; a++)
{
if (x2 % a == 0)
{
t = 2;
break;
}
}
if (t == 2)
continue;
}

printf("%d+%d=%d\n", x1, x2, n);
}
return 0;
}

#include<stdio.h>
int main()
{
int x;
int y;
int i = 2, h = 2, s, t;
scanf("%d", &x);
y = x;
for (x; x >= 2; x--)
{
i = 2;
while (i < x)
{

if (x % i == 0)
break;
else
i++;
}
if (i == x)
{
s = i;
t = y - s;
h = 2;
if (t <= s)
{
while (h < t)
{
if (t % h == 0)
break;
else
h++;
}
}
if (t == h)
printf("%d+%d=%d\n", t, s, y);
}

}
return 0;
}

#include <iostream>
using namespace std;
int main()
{
int x,x1,x2,x11;
cin>>x;
x1=2;
while(x1<=x)
{int y=2,n;
while(y<x1)
{
if(x1%y==0)
break;
y++;
}
if(y==x1)
{
y=2;
x2=x-x1;
while(y<x2)
{
if(x2%y==0)
break;
y++;
}
if(y==x2&&x1<=x2)
cout<<x1<<"+"<<x2<<"="<<x<<endl;
}
x1++;
}
return 0;
}

#include <iostream>
using namespace std;
int main()
{
int x,x1=2,x2,c=2;
cin>>x;
x2=x;
while(x1<=x/2)
{
while(c<=x1-1)
{
if(x1%c==0)
break;
c++;
}
if(c==x1)
{
int d=2;
x2=x-x1;
while(d<=x2-1)
{
if(x2%d==0)
break;
d++;
}
if(d==x2)

cout<<x1<<"+"<<x2<<"="<<x<<endl;
}
c=2;

x1++;
}

return 0;
}

#include<iostream>
#define Yes 1
#define No -1
using namespace std;

int is_prime(int x)
{
    if(x==1)
        return No;
    if(x==2)
        return Yes;
    for(int i=2;i<x;i++)
    {
        if(x%i==0)
            return No;
    }
    return Yes;
}

void func(int x)
{
    int flag=x/2;
    for(int i=1;i<=flag;i++)
    {
        if(is_prime(i)==Yes && is_prime(x-i)==Yes)
            cout<<i<<"+"<<x-i<<"="<<x<<endl;
    }
}

int main()
{
    int x;
    cin>>x;
    func(x);

    system("pause");
    return 0;
}