相信我

题解在此

#include <iostream>
using namespace std;
int main() {
    int n, x, y;
    cin >> n >> x >> y;
    for (int i = 0; i < n; ++i) {
        for (int j = y; j >= x; --j) {
            cout << j<<" ";  
        }
        cout << endl;  
    }
    
    return 0;
}