function Main(input) {
    // 方角：北東南西：0123
    const d = ["N", "E", "S", "W"];
    const src = input.split("\n")
    const a = d.indexOf(src[0]);
    const b = d.indexOf(src[1]);
    const ans = (b - a + 4) % 4;
    console.log(ans);
}
Main(require("fs").readFileSync("/dev/stdin", "utf8"));