知识点：

分支控制：分支控制 

#include <iostream>
using namespace std;

int main() {
    int x = 0;
    int l = 0;
    int r = 0;
    string result("None");

    cin >> x >> l >> r;

    if ((l <= x) && (x <= r)) {
        result = "true";
    } else {
        result = "false";
    }

    cout << result << endl;

    return 0;
}