#include <stdio.h>

char buf[2000000];

int main(void) {
    char *p = buf;
    int n = 0, m = 0, i;
    unsigned int f1 = 0, f2 = 1, fb = 0;
    
    fread(buf, sizeof(char), 2000000, stdin);
    
    if (*p < '1' || '9' < *p) {
        perror("invalid n");
        return 1;
    }
    while ('0' <= *p && *p <= '9') {
        n = 10 * n + (int)(*p - '0');
        p++;
    }
    if (*p != ' ') {
        perror("invalid separator");
        return 1;
    }
    p++;
    if (*p < '1' || '9' < *p) {
        perror("invalid m");
        return 1;
    }
    while ('0' <= *p && *p <= '9') {
        m = 10 * m + (int)(*p - '0');
        p++;
    }
    if (*p != '\n') {
        perror("invalid newline");
        return 1;
    }
    *p++;
    if (*p != '\0') {
        perror("invalid input");
        return 1;
    }
    
    for (i = 3; i <= n; i++) {
        fb = (f1 + f2) % m;
        f1 = f2;
        f2 = fb;
    }
    
    printf("%u\n", fb);
    
    return 0;
}