#include <iostream>
using namespace std;
 
int main() {
    int n; // jumlah pendonor
    cout << "Masukkan jumlah pendonor: ";
    cin >> n;
 
    int count = 0;
    string golongan;
 
    for (int i = 0; i < n; i++) {
        cout << "Masukkan golongan darah pendonor ke-" << i+1 << ": ";
        cin >> golongan;
 
        // Misal kita hitung semua pendonor yang mengisi data
        if (!golongan.empty()) {
            count++;
        }
    }
 
    cout << "Jumlah pendonor darah adalah: " << count << endl;
    return 0;
}
 

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8
3
3 1 150
1 2 250
3 1 300
1 3 450
2 2 200
3 4 350
1 4 500
2 1 500