ACM输入n行m列的矩阵
#include <iostream>
#include<vector>
using namespace std;
int main()
{
int n;
cin >> n;
int m;
cin >> m;
vector<vector<int>> array(n);
for (int i = 0; i < n; i++)
{
vector<int> array1(m,0);
for (int j = 0; j < m; j++)
{
cin>>array1[j];
}
array[i] = array1;
}
return 0;
}