include<stdio.h>

include<math.h>

include<string.h>

int main() { char ch[14]; int b; int i,g; scanf("%s",ch); b=strlen(ch); if(b==1&&ch[0]=='0') printf("0\n"); if(ch[0]=='-') {g=0; strrev(ch); printf("%c",ch[b-1]); for(i=0;i<b-1;i++) { if(ch[i]=='0'&&g==0) continue; else { printf("%c",ch[i]); g=1; } } printf("\n"); } else { g=0; strrev(ch); for(i=0;i<b;i++) { if(ch[i]=='0'&&g==0) continue; else { printf("%c",ch[i]); g=1; } } printf("\n"); } }