function Main(input) {
  var S = input[0];
  var n;

  if (S == "SUN") {
    n = 7;
  }
  if (S == "MON") {
    n = 6;
  }
  if (S == "TUE") {
    n = 5;
  }
  if (S == "WED") {
    n = 4;
  }
  if (S == "THU") {
    n = 3;
  }
  if (S == "FRI") {
    n = 2;
  }
  if (S == "SAT") {
    n = 1;
  }
  console.log("%s", n);
}

Main(
  require("fs")
    .readFileSync("/dev/stdin", "utf8")
    .split("\n")
);
