Try this int main(){ int arr[100]; for(int j=1;j<6;j++) {cin>>arr[j];} int count=0; for(int i=1;i<6;i++)
{if(arr[i]==i) { count+=100 ;

    }
else if(arr[i]!=i&&arr[i]<=10+i)
    {
      count+=100-(arr[i]-i)*10;    
    }
}
cout<<count;
return 0;

}

my code is working just fine..yet showing wrong answer for a few test cases :/ https://www.hackerrank.com/contests/hourrank-3/challenges/contest-performance/submissions/code/4755580

i am getting a vague error //it says solution.cc:16:32: warning: iteration 4u invokes undefined behavior [-Waggressive-loop-optimizations] for (int j=i+1;j ^

something is wrong with indentation...