#include <stdio.h>
int main(){
     int ptr=0, i=0, cell[7];
     for( i=0; i<7; ++i) cell[i]=0;
     ptr+= 1;
     if(ptr>=7) perror("Program pointer overflow");
     cell[ptr]+= 8;
     while(cell[ptr])
     {
          ptr-= 1;
          if(ptr<0) perror("Program pointer underflow");
          cell[ptr]+= 9;
          ptr+= 1;
          if(ptr>=7) perror("Program pointer overflow");
          cell[ptr]-= 1;
     }
     ptr-= 1;
     if(ptr<0) perror("Program pointer underflow");
     putchar(cell[ptr]);
     ptr+= 2;
     if(ptr>=7) perror("Program pointer overflow");
     cell[ptr]+= 1;
     ptr+= 1;
     if(ptr>=7) perror("Program pointer overflow");
     cell[ptr]+= 1;
     ptr+= 1;
     if(ptr>=7) perror("Program pointer overflow");
     cell[ptr]+= 2;
     ptr+= 1;
     if(ptr>=7) perror("Program pointer overflow");
     while(cell[ptr])
     {
          cell[ptr]-= 1;
     }
     cell[ptr]+= 1;
     ptr-= 1;
     if(ptr<0) perror("Program pointer underflow");
     while(cell[ptr])
     {
          ptr+= 1;
          if(ptr>=7) perror("Program pointer overflow");
          while(cell[ptr])
          {
               cell[ptr]-= 1;
               ptr+= 1;
               if(ptr>=7) perror("Program pointer overflow");
               cell[ptr]+= 1;
               ptr-= 2;
               if(ptr<0) perror("Program pointer underflow");
               cell[ptr]+= 4;
               ptr+= 1;
               if(ptr>=7) perror("Program pointer overflow");
          }
          ptr-= 2;
          if(ptr<0) perror("Program pointer underflow");
     }
     ptr+= 1;
     if(ptr>=7) perror("Program pointer overflow");
     putchar(cell[ptr]);
     cell[ptr]+= 7;
     putchar(cell[ptr]);
     putchar(cell[ptr]);
     cell[ptr]+= 3;
     putchar(cell[ptr]);
     ptr+= 2;
     if(ptr>=7) perror("Program pointer overflow");
     cell[ptr]+= 7;
     putchar(cell[ptr]);
     ptr-= 3;
     if(ptr<0) perror("Program pointer underflow");
     while(cell[ptr])
     {
          while(cell[ptr])
          {
               cell[ptr]-= 1;
          }
          ptr-= 1;
          if(ptr<0) perror("Program pointer underflow");
          while(cell[ptr])
          {
               cell[ptr]-= 1;
          }
          ptr+= 1;
          if(ptr>=7) perror("Program pointer overflow");
     }
     ptr-= 1;
     if(ptr<0) perror("Program pointer underflow");
     cell[ptr]+= 15;
     putchar(cell[ptr]);
     ptr+= 2;
     if(ptr>=7) perror("Program pointer overflow");
     putchar(cell[ptr]);
     cell[ptr]+= 3;
     putchar(cell[ptr]);
     cell[ptr]-= 6;
     putchar(cell[ptr]);
     cell[ptr]-= 8;
     putchar(cell[ptr]);
     ptr+= 2;
     if(ptr>=7) perror("Program pointer overflow");
     cell[ptr]+= 1;
     putchar(cell[ptr]);
     ptr+= 1;
     if(ptr>=7) perror("Program pointer overflow");
     cell[ptr]+= 4;
     putchar(cell[ptr]);
     return 0;
}