#include "stdio.h" #include "string.h" #include "ctype.h" #include "math.h" int main() { int t,n,x,i,j,cnt; char a[1000],b[1000]; while(gets(a)!=NULL) { cnt=0,j=0; for(i=strlen(a)-1;i>=0;i--) { if(a[i]!=',') { b[j++]=a[i];cnt++; if(cnt==3) { b[j++]=','; cnt=0; } } } for(i=j-1;i>=0;i--) { if(i>0) printf("%c",b[i]); else printf("%c\n",b[i]); } } return 0; } |
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