function Main (input){
  input = input.split("\n");
  tmp = input[0].split(" ");
  var S = (tmp[0]);
  var answer = 0;
  if(S === 'SUN'){
    answer = 7;
  }else if(S === 'MON'){
    answer = 6;
  }else if(S === 'TUE'){
    answer = 5;
  }else if(S === 'WED'){
    answer = 4;
  }else if(S === 'THU'){
    answer = 3;
  }else if(S === 'FRI'){
    answer = 2;
  }else if(S === 'SAT'){
    answer = 1;
  }
  console.log(answer);
}
Main(require("fs").readFileSync("/dev/stdin", "utf8"));