Problem in "The Lead Game" ?

general
,
1

Codechef is showing wrong answer everytime I submit though the program is running fine,may you please point out my flaw

#include<stdio.h>
int main()
{
int n,dif;
int lead,leader,q,w,i;
scanf("%d",&n);
scanf("%d%d",&q,&w);
if(q>w)
{
lead=q-w;
leader=1;
}
else
{
lead=w-q;
leader=2;
}

for(i=2;i<=n;++i)
{
    scanf("%d%d",&q,&w);
    dif=q-w;
    if(q>w)
    {
        if(dif>lead){lead=dif;leader=1;}
    }
    if(w>q)
    {
        dif=dif*(-1);
        if(dif>lead){lead=dif;leader=2;}
    }

}
printf("%d %d",leader,lead);
return 0;

}

2

You are not interpreting the inputs as expected in the problem statement.Please read the problem statement once again carefully.Hope this helps!!

3

You are not adding the previous score to the current score . You should add the previous score to the current score to calculate the lead .

1 Like
4

rounds=input()
p1_score=[]
p2_score=[]
difference_array=[]
for i in xrange(0,rounds):
a, b = map(int, raw_input().split())
p1_score.append(a)
p2_score.append(b)
for t in range(0,rounds):
difference=p1_score[t]-p2_score[t]
difference_array.append(difference)
difference_array.sort()
x1=abs(difference_array[0])
x2=abs(difference_array[rounds-1])
if x1>x2:
print “2”, x1
elif x2>x1:
print “1”, x2
else:
pass

This is the code I wrote in Python 2.7. Please tell me what’s wrong with this. Test case works fine with it.

5 
#include 
#include 
int main(void){
	int  n, p=1;
	scanf("%d",&n);
	if(n>10^4 || n<=0)
		exit(0);
	int a[n][2], d[n];
	for (int i = 0; i < n; ++i)
	{
		scanf("%d %d",&a[i][0],&a[i][1]);
		if(a[i][0]>1000 || a[i][0]<1 || a[i][1]>1000 || a[i][1]<1 )
			exit(0);
		d[i]=abs(a[i][0]-a[i][1]);
		 if (d[i]0)
		 {
		 	d[i]=d[i-1];
		 	a[i][0]=a[i-1][0];
		 	a[i][1]=a[i-1][1];
		 }
	}
	if(a[n-1][1]>a[n-1][0])
		p++;
	printf("%d %d",p,d[n-1]);
}

```



i uploaded this code but its showing wrong answer but y??
6

Why do we have to add previous score to current score.

7

You made sure that you are finding difference b/w the CUMULATIVE scores instead of individual scores? Kind of hard to see in the code.