C++ÊäÈë¶þάÊý×é

C++ÊäÈë¶þάÊý×é

int n, m;
 while (cin >> n >> m)
 {
     vector<vector<int>> data(n, vector<int>(m));
     int sum = 0;
     for (int i = 0; i < n; i++)
  for (int j = 0; j < m; j++)cin >> data[i][j];