ㄷㅇ

#include <stdio.h>

int abc(int w){

int i;

for(i=0;i<=9999;i++){

if(w<10){

return w;

break;

}

else{

int a,b,c,d,e,f,g;

a = w-(w/10*10);

b = a-(w/100*100);

}

}

}

int main()

{

int m;

scanf("%d",&m);

printf("%d",abc(m));

}