#include <stdio.h>
int main(void) {
// your code goes here
int a,b,c,d,t;
scanf("%d %d %d %d",&a
,&b
,&c
,&d
); if(a>b){
t=a;
a=b;
b=t;
}
if(a>c){
t=a;
a=c;
c=t;
}
if(a>d){
t=a;
a=d;
d=t;
}
if(b>c){
t=b;
b=c;
c=t;
}
if(c>d){
t=c;
c=d;
d=t;
}
printf("%d %d %d %d",a
,b
,c
,d
); return 0;
}
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