const input = require('fs').readFileSync('/dev/stdin', 'utf8');

function main(input) {
  if(input == "SUN") console.log(7);
  else if(input == "MON") console.log(6);
  else if(input == "TUE") console.log(5);
  else if(input == "WED") console.log(4);
  else if(input == "THU") console.log(3);
  else if(input == "FRI") console.log(2);
  else if(input == "SAT") console.log(1);
};

main(input);

