#include<stdio.h> int main(void) { int a,b[4],i,j; scanf("%d",&a); for(i=0;i<4;i++) { b[i]=a%10; a=a/10; } for(i=3;i>=0;i--) { if(i==0) printf("%d",b[i]); else printf("%d ",b[i]); } }
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