#include <stdio.h>
#include <math.h>
int main(){
int n;
int arr[3];
int v;
int v2=1;
if (scanf("%d",&n)!=EOF){
// printf("n=%d\n",n);
for (int i=0;i<3;i++){
v = n%10;
arr[i] = v;
n = n/10;
v2 = v2*10;
// printf("%d %d %d\n",i,v,n);
}
v2 = v2/10;
int s=arr[0]*v2;
for (int i=1;i<3;i++){
v2 = v2/10;
s = s + arr[i]*v2;
}
printf("%d",s);
}else{
printf("input wrong");
}
return 0;
}
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