#include
using namespace std;
int main() {
int origNum,num,rem,count=0;
int sum=0;
cin>>origNum;
num=origNum;
while(num!=0){
rem=num%10;
num/=10;
count++;
}if(count==3){
num==origNum;
while(num!=0){
rem=num%10;
sum+=rem*rem*rem;
num/=10;
}
}else if(count==4){
num==origNum;
while(num!=0){
rem=num%10;
sum+=rem*rem*rem*rem;
num/=10;
}
}
if(sum==origNum){
cout<<"true";
}else{
cout<<"false";
}
return 0;
}