题解

#include<bits/stdc++.h>
using namespace std;
int main(){
    int n ,m;
    cin >> n >> m;
    int lst[n + 1][m + 1];
    for (int i = 1 ; i <= n ; i++){  //输入矩阵
        for (int j = 1 ; j <= m ; j++){
            cin >> lst[i][j];
        }
    }
    for (int i = 1 ; i <= m ; i++){  //输出矩阵
        for (int j = 1 ; j <= n ; j++){
            cout << lst[j][i] << " ";  //[i][j]变[j][i]
        }
        cout << "\n";
    }
    return 0;
}