#include <stdio.h>
#include <assert.h>
#include <stdlib.h>

static FILE *fr, *fw;

// Declaring variables
static int N;
static long long int M;
static int result;
static int* V;

// Declaring functions
int quadri(int N, long long M, int V[]);

// Begin fast input library

static inline char fast_read_char() {
    char c = fgetc_unlocked(fr);
    // ignore whitespaces
    while (	c == 0x20 || c == 0x09 || c == 0x0a
            || c == 0x0b || c == 0x0c || c == 0x0d) c = fgetc_unlocked(fr);
    return c;
}

static inline int fast_read_int() { // speed x5
    short int minus = 0;
    int res = 0;
    char c = fgetc_unlocked(fr);
    while (c != '-' && (c < '0' || '9' < c)) c = fgetc_unlocked(fr);

    if (c == '-') minus = 1, c = fgetc_unlocked(fr);

    do {
        res = res * 10 + (c - '0');
        c = fgetc_unlocked(fr);
    }
    while ('0' <= c && c <= '9');

    if (minus) return -res;
    else return res;
}

static inline long long int fast_read_longint() {
    short int minus = 0;
    long long int res = 0;
    char c = fgetc_unlocked(fr);
    while (c != '-' && (c < '0' || '9' < c)) c = fgetc_unlocked(fr);

    if (c == '-') minus = 1, c = fgetc_unlocked(fr);

    do {
        res = res * 10ll + (long long int)(c - '0');
        c = fgetc_unlocked(fr);
    }
    while ('0' <= c && c <= '9');

    if (minus) return -res;
    else return res;
}

static inline double fast_read_real() { //TODO
    double x;
    fscanf(fr, "%lf", &x);
    return x;
}

static inline void fast_write_char(char c) {
    fputc_unlocked(c, fw);
}

static inline void fast_write_int(int x) { // speed x2
    static short int digits[16];
    if (x == 0) {
        fputc_unlocked('0', fw);
        return;
    }
    if (x < 0) {
        fputc_unlocked('-', fw);
        x = -x;
    }
    short int i = -1;
    while (x) {
        i++;
        digits[i] = x%10;
        x /= 10;
    }
    for (; i >= 0; i--) fputc_unlocked('0' + digits[i], fw);
}

static inline void fast_write_longint(long long int x) { // speed x2
    static short int digits[32];
    if (x == 0) {
        fputc_unlocked('0', fw);
        return;
    }
    if (x < 0) {
        fputc_unlocked('-', fw);
        x = -x;
    }
    short int i = -1;
    while (x) {
        i++;
        digits[i] = x%(10ll);
        x /= 10ll;
    }
    for (; i >= 0; i--) fputc_unlocked('0' + digits[i], fw);
}

static inline void fast_write_real(double x) { //TODO
    fprintf(fw, "%lf", x);
}

// End fast input library

int main() {
    fr = stdin;
    fw = stdout;

    // Iterators used in for loops
    int i0;

    // Reading input
    N = fast_read_int();
    M = fast_read_longint();
    V = (int*)malloc(N * sizeof(int));
    for (i0 = 0; i0 < N; i0++) {
        V[i0] = fast_read_int();
    }

    // Calling functions
    result = quadri(N, M, V);

    // Writing output
    fast_write_int(result);
    fast_write_char('\n');

    fclose(fr);
    fclose(fw);
    return 0;
}