'use strict'
function Main(s) {
  let input = s.trim();
  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(require("fs").readFileSync("/dev/stdin", "utf8"));