#include<stdio.h>
using namespace std;
#define int  long long
//string s;
bool read_ks=1,read_kk=1;
const int N=1e6+1;
int c_size;
char c[N];
void read(char *t,int &size){
	int i,j,k;
	if(read_ks){
		t++;
	}
	size=-1;
	while(*(t-1)!=-1&&(*(t-1)!='\n'||read_kk)){
		*t=getchar();
		size++;
		t++;
	}
	return ;
}
void put(char *t,int size){
	int i,j,k;
	if(read_ks){
		t++;
	}
	while(size){
		putchar(*t);
		t++;
		size--;
	}
	return ;
}
struct node{
	int l=1,r=0;
	bool t=0;
}m[N];
#undef int
int main(){
	#define int  long long
//	freopen("001.in","r",stdin);
//	freopen("001.out","w",stdout);
	int i,j,k;
	read(c,c_size);
	
	return 0;
}