方法1:
int N=
5, M=
6;
vector<vector<int> > Matrix(N);
for(
int i =
0; i< Matrix.size(); i++){
Matrix[i].resize(M);
}
方法2:
#include <iostream>
#include<vector>
#include<algorithm>
#include<string>
using namespace std;
int main(){
int m, n;
cin >> m >> n ;
vector<vector<int>> v1(m,
vector<int>(n));
for (
int i =
0; i < m; i++){
for (
int j =
0; j < n; j++)
cin >> v1[i][j];
}
return 0;
}
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