#include <stdlib.h>
#include <stdio.h>
__int32_t z[1<<21];
void in(int j){if(j>127 || j< -127) exit(printf("Too big\n"));}
int tk(char * K){
{int j=1<<21; while(j--) z[j]=0;}
int i=0, j=0, k=0;
while(*K){switch (*K) {
case 'A': ++i; break;
case 'B': --i; break;
case 'C': ++j; break;
case 'D': --j; break;
case 'E': ++k; break;
case 'F': --k; break;
default: exit(printf("Bad letter:%c\n", *K));}
in(i); in(j); in(k);
int a = (1<<16)*(i+128) + (1<<8)*(j+128) + k+128;
if(z[a>>5]&(1<<(a&31))) return 0;
z[a>>5] |= (1<<(a&31));
++K;}
if(i || j || k) exit(printf("Curve not closed\n"));
return 1;
}

int main(int argc, char** args){
printf("%d\n", tk(args[1]));
return 0;}