[프로그래머스] lv1. 2016년

lv1. 2016년

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Code

package programmers;

public class 부족한금액계산하기 {
    public long solution(int price, int money, int count) {
        long answer = -1;
        answer = (long) price* (count*(count+1)/2)-money;
        if(answer<=0) return 0;
        else return answer;
    }
}