#include<iostream>
#include<string>
using namespace std;

class Student {
private:
    std::string name;
    float grade;
    
public:
     Student() : name(""), grade(-1.0) {}
     
     void setName(const std::string& studentName) {
         name = studentName;
     }
     
     bool setGrade(float studentGrade) {
         if (studentGrade >= 0 && studentGrade <= 100) {
             grade = studentGrade;
             return true;
         }
         else {
             return false;
         }
     }
     void displayInfo() const {
         if (grade >= 0) {
             std::cout << "Name: " << name << " Grade: " << grade << std::endl;
         } else {
             std::cout << "Invalid input" << std::endl;
         }
     }
};