Arithmetic Sequence (Easy)

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1

Arithmetic Sequence is a sequence of numbers where the difference between two consecutive numbers ar…

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If you need help solving this problem, mention your approach and ask specific questions. Please avoid sharing your code and asking the Community to figure out “what’s wrong”.

2 
#include<iostream>
using namespace std;
int main()
{
	int N,M,sum,sub,x;
	scanf("%d",&N);
	sum=N*(N+1)/2;
	scanf("%d",&M);
	while(M--) 
	{
	    /* code */
	    scanf("%d",&x);
	    sub+=x;
	    //M--;
	}
	printf("%d\n",sum-sub);
	return 0;
}

My code gives correct output but when i submitted it shows wrong answer. Where is the problem?

3

you should use
sub=0 in 5th line
also while(m--)

4

@hjr265 newline issues with d8.

1 Like
5

Thank you for reporting this, @touhidurrr. The test cases have been fixed and both your D8 submissions have been rejudged.