[Java] 2738번 : 행렬 덧셈

https://www.acmicpc.net/problem/2738

정답

import java.io.IOException;
import java.io.BufferedReader;
import java.io.InputStreamReader;
import java.io.BufferedWriter;
import java.io.OutputStreamWriter;

public class Main{
    public static void main(String[] args) throws IOException{
        BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
        BufferedWriter bw = new BufferedWriter(new OutputStreamWriter(System.out));
        
        String[] nm = br.readLine().split(" "); // 3 3
        int n = Integer.parseInt(nm[0]); //3
        int m = Integer.parseInt(nm[1]); //3
        int[][] arr = new int[n][m];
        int[][] result=new int[n][m];
        
        for(int i=0;i<n;i++){
            String[] s = br.readLine().split(" ");
            for(int j=0;j<m;j++){
                arr[i][j] = Integer.parseInt(s[j]);
            }
        }
        for(int i=0;i<n;i++){
            String[] s = br.readLine().split(" ");
            for(int j=0;j<m;j++){
                result[i][j] = arr[i][j] + Integer.parseInt(s[j]);
            }
        }
        for(int[] ints: result){
            for(int anInt : ints){
                bw.write(anInt +" ");
            }
            bw.newLine();
        }
        bw.flush();
    }
}

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