10812 - Beat the Spread!

[sazzadcsedu]

no need to reply.
i got AC.

[sms.islam]

i need help.i just cant understand!!!!!



#include<stdio.h>

long x,y,s,d,n,i,a,b;

void BEAT_SPREAD()
{
scanf("%ld%ld",&s,&d);
if(s>=d)
{
x=(s+d);
y=(s-d);
a=x/2;
b=y/2;
if((x%2==0) && (y%2==0) && (a>0) && (b>0))
printf("%ld %ld",a,b);
else
printf("impossible");
}
else
printf("impossible");
printf("\n");
a=b=x=y=0;
}



int main(void)
{
while(scanf("%ld",&n)==1)
{
for( i = 1 ; i <= n ; i ++)
{
BEAT_SPREAD();
}
}
return 0;
}

[sms.islam]

I got it!!!!! i think more about this easy problem. The addition of two number is always even.so why should i check it?

[kissu parina]

can any one say why um getting WA ?

Code: Select all

#include<stdio.h>
int main(){
   long a,b,tst;
   scanf("%d",&tst);
   while(tst--){
      int s,d;
      scanf("%d %d",&a,&b);
      s=a+b;d=a-b;
      if((a+b)%2)printf("impossible\n");   
      else if((a-b)%2)printf("impossible\n");
      else if(a<b)printf("impossible\n");
      else printf("%d %d\n",s/2,d/2);
   }
   return 0;
}


thanking in advance

[rasel2707]

#include<stdio.h>
int main()
{
long int t, s, d, a, c;
scanf("%d",&t);
while(t--)
{
scanf("%d %d", &s, &d);
a = (s - d) / 2;
if((s%2==0 && d%2!=0) || (s%2!=0 && d%2==0) || (s-d)<0) printf("impossible\n");
else
{ if(a < s-a){ c = a; a = s - a; }
printf("%d %d\n", a, c);
}
}

return 0;
}

This is my code I got WA . Please anybody help me.

[shoaib7k]

i m getting w.a..... here is my code[code][/code]

#include<stdio.h>
//#include<iostream.h>
int main()
{
int t,s,d,i,j;
scanf("%d",&t);
while(t>0)
{
scanf("%d%d",&s,&d);
if(s<d)
{
printf("impossible\n");
goto m;
}
for(i=d;i<=s;i++)
{
for(j=0;j<=d;j++)
{
if(i+j==s && i-j==d)
{
goto l;
}
}
}
printf("impossible\n");
goto m;
l: printf("%d %d\n",i,j);
m: t--;
}
// system("pause");
return 0;
}

[PromeNabid]

Much easy problem. This samples might help.
Input:

Code: Select all

12
15 10
88 9
155 22
20 10
40 12
75 25
13 7
888 222
9999 1111
12365 123
99 11
13 19

Output:

Code: Select all

impossible
impossible
impossible
15 5
26 14
50 25
10 3
555 333
5555 4444
6244 6121
55 44
impossible


[sulaimansust]

Can Anyone help me finding problem at this code? I got wrong answer every time . Help me please




#include <stdio.h>

int main()
{
long int n, s, d, difference, big, small;
int i, count=0;

scanf("%ld", &n);

for(i=0; i<n; ++i)
{
scanf("%ld %ld", &s, &d);

if(d>s)
{
printf("impossible");
}
else if(d==0 && s%2==0)
{
printf("%ld %ld\n", s/2, s/2);
}
else if(s%2==0 && d%2==1)
printf("impossible\n");
else if(d==0 && s%2==1)
printf("impossible\n");
else
{
difference=s-d;
if(difference%2==1)
{
printf("impossible\n");
continue;
}
big = difference/2 + d;
small = s - big;
printf("%ld %ld\n", big, small);
}
}
return 0;
}

[brianfry713]

line 16 is missing a newline.

[sulaimansust]

Thanks Bro.