i have the following loop but am unable to calculate the complexity .I need help

```
int A[n][n];
for(int i=0; i<n;i++) {
    for(int j=0;j<n;j++) {
        int x;
        cin >> x;
        A[i][j] = x;
    }
}
int sumLine = 0;
for(int k=0;k<n;k++) {
    sumLine += A[k][0];
}

```

i would appreciate