function Main(input) {
    const src = input.replace("\n", "").split(" ");
    const n = parseInt(src[0]);
    const m = parseInt(src[1]);
    let ans = 0;
    if (n < 3) {
        ans = (n == 1 ? 0 : 1 % m);
    } else {
        let a = 0;
        let b = 1;
        let c = 1;
        for (i = 3; i <= n; i++) {
            c = (a + b) % m;
            a = b;
            b = c;
        }
        ans = c;
    }
    console.log(ans);
}
Main(require("fs").readFileSync("/dev/stdin", "utf8"));