/*
#include "testlib.h"

int main(int argc, char* argv[]){
    registerValidation(argc, argv);

    int H = inf.readInt(1,1'000'000);
    inf.readSpace();
    int W = inf.readInt(1, 4'000'000);
    ensuref((long long)H * (long long)W <= 4'000'000, "HxW violation");
    inf.readEoln();
    for(int i = 0; i < H; i++){
        for(int j = 0; j < W; j++){
            if(j > 0){
                inf.readSpace();
            }
            int A = inf.readInt(0, 1'000'000'000);
        }
        inf.readEoln();
    }
    inf.readEof();
}
*/


#include <bits/stdc++.h>
using namespace std;

class FastValidator {
private:
    static constexpr size_t BUFSIZE = 1 << 20;

    char buf[BUFSIZE];
    size_t pos = 0;
    size_t len = 0;

    [[noreturn]] void fail(const char* message) {
        fprintf(stderr, "validation failed: %s\n", message);
        exit(1);
    }

    char peekChar() {
        if (pos == len) {
            len = fread(buf, 1, BUFSIZE, stdin);
            pos = 0;
            if (len == 0) return '\0';
        }
        return buf[pos];
    }

    char readChar() {
        char c = peekChar();
        if (c != '\0') ++pos;
        return c;
    }

public:
    long long readInt(long long l, long long r) {
        char c = peekChar();

        if (c < '0' || c > '9') {
            fail("integer expected");
        }

        long long x = 0;

        while (true) {
            c = peekChar();
            if (c < '0' || c > '9') break;

            int d = readChar() - '0';

            if (x > (LLONG_MAX - d) / 10) {
                fail("integer overflow");
            }

            x = x * 10 + d;
        }

        if (x < l || x > r) {
            fail("integer out of range");
        }

        return x;
    }

    void readSpace() {
        if (readChar() != ' ') {
            fail("space expected");
        }
    }

    void readEoln() {
        char c = readChar();

        if (c == '\n') return;

        if (c == '\r') {
            if (readChar() == '\n') return;
        }

        fail("end of line expected");
    }

    void readEof() {
        if (peekChar() != '\0') {
            fail("EOF expected");
        }
    }

    [[noreturn]] void ensureFail(const char* message) {
        fail(message);
    }
};

int main() {
    FastValidator inf;

    int H = inf.readInt(1, 1'000'000);
    inf.readSpace();
    int W = inf.readInt(1, 4'000'000);

    if ((long long)H * W > 4'000'000) {
        inf.ensureFail("HxW violation");
    }

    inf.readEoln();

    for (int i = 0; i < H; i++) {
        for (int j = 0; j < W; j++) {
            if (j > 0) {
                inf.readSpace();
            }

            int A = inf.readInt(0, 1'000'000'000);
            (void)A;
        }

        inf.readEoln();
    }

    inf.readEof();
}