Halloween Sale Hacker Rank Solution in C- infinte loop and usage of break

https://www.hackerrank.com/challenges/halloween-sale/problem 

#include <stdio.h>

int main (void)

{

    int p, d, m, s;

    int n, t;

    scanf("%d%d%d%d", &p, &d, &m, &s);

    int c = 0;

    while(1)

    {

        int price;

        if(p>m)

            price=p;

        else

            price=m;

        s = s-price;

        p = p-d;

        if(s>=0)

            c++;

        else

            break;

    }

    if(c < 0)

        printf("0");

    else

        printf("%d",c);

}