#include<stdio.h>


int main(){
    int unit,bill,bilg;
    /*C program to input electricity unit charges and calculate total electricity bill according to the given condition:
    For first 50 units Rs. 0.50/unit
    For next 100 units Rs. 0.75/unit
    For next 100 units Rs. 1.20/unit
    For unit above 250 Rs. 1.50/unit
    An additional surcharge of 20% is added to the bill*/

    printf("Enter the units of electricity burned by you : ");
    scanf("%d", &unit);
    if(unit<=50){
        bill = unit*0.50;
        bilg = bill + bill/5;
        printf("The total bill is: %d", bilg);
    }

    else if(unit<=150){
        bill = unit*0.75;
        bilg = bill + bill/5;
        printf("The total bill is: %d", bilg);
    }

    else if(unit<=250){
        bill = unit*1.20;
        bilg = bill + bill/5;
        printf("The total bill is: %d", bilg);
    }
   
    else{
        bill = unit*1.50;
        bilg = bill + bill/5;
        printf("The total bill is: %d", bilg);
    }
    return 0;
}