var input = require("fs").readFileSync("/dev/stdin", "utf8");

var S = input;
var weekMap = {
    SUN: '7',
    MON: '6',
    TUE: '5',
    WED: '4',
    THU: '3',
    FRI: '2',
    SAT: '1',
};

var result = weekMap[S];
console.log(result);
