Why I m getting RE for 12049- Just Prune The List

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Why I m getting RE for 12049- Just Prune The List

Postby rahian » Thu Aug 11, 2011 11:42 pm

#include<stdio.h>
#define MAX 100009
int main()
{
long test,arraya[MAX],arrayb[MAX],a,b,p,max,count,i;
scanf("%lld",&test);
while(test)
{
scanf("%lld %lld",&a,&b);
for(i = 1; i <=a; i++)
{
scanf("%lld",&p);
arraya[p]++;
}
for(i = 1; i <=b; i++)
{
scanf("%lld",&p);
arrayb[p]++;
}

if(a>=b)
max=b;
else
max=a;
count=0;

for(i=1;i<=max;i++)
{
if(arraya[i]>=arrayb[i])
count+=(arraya[i]-arrayb[i]);
else
count+=(arrayb[i]-arraya[i]);
}
printf("%lld\n",count);

test--;
}

return 0;
}
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Re: Why I m getting RE for 12049- Just Prune The List

Postby ferd@u$ » Fri Aug 19, 2011 10:34 pm

Read the problem statement and input carefully..........@ Each integers in the input is 32 bit signed integer!!!!!!!!!!!!

You have defined MAX only 100009............when executing arraya[p]++ or arrayb[p]++ it occurs array overflow for those cases where the value of p is more than 100009.......
for example.........when p=234765897, your defined array does not have this index that's why u r getting runtime error...........try to find another method to solve this problem........Best of luck.......
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Re: Why I m getting RE for 12049- Just Prune The List

Postby robot » Mon Aug 22, 2011 1:49 pm

Hi, ferd@ud$ is right..
u can use data structure map.......bcz the value r so large...... :)
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Re: Why I m getting RE for 12049- Just Prune The List

Postby rahian » Wed Sep 28, 2011 12:22 am

thank u friend......... I hv solved and AC
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Why wrong answer? Can anyone help with critical inputs?

Postby milton_iut » Tue Jun 19, 2012 8:41 pm

#include<stdio.h>
#define MAXARRAY 10000
int mergesort(long int a[], int low, int high);
int main(){
int N,M,T,i,j,count;
long int first[MAXARRAY],second[MAXARRAY];
scanf("%d",&T);
for(i=0;i<T;i++){
count=0;
scanf("%d %d",&N,&M);
for(j=0;j<N;++j){
scanf("%ld",&first[j]);
}
mergesort(first,0,N-1);
for(j=0;j<M;++j){
scanf("%ld",&second[j]);
}
mergesort(second,0,M-1);
while(M>=0&&N>=0){
if(first[N]>second[M]){
--N;
++count;
}
else if(second[M]>first[N]){
--M;
++count;
}
else{
--M;
--N;
}
}
count+=M+N+2;
printf("%d\n",count);
}
return 0;
}
int mergesort(long int a[], int low, int high){
int i = 0;
int length = high - low + 1;
int pivot = 0;
int merge1 = 0;
int merge2 = 0;
long int working[MAXARRAY];

if(low == high)
return 0;

pivot = (low + high) / 2;

mergesort(a, low, pivot);
mergesort(a, pivot + 1, high);

for(i = 0; i < length; i++)
working[i] = a[low + i];

merge1 = 0;
merge2 = pivot - low + 1;

for(i = 0; i < length; i++) {
if(merge2 <= high - low){
if(merge1 <= pivot - low){
if(working[merge1] > working[merge2])
a[i + low] = working[merge2++];
else
a[i + low] = working[merge1++];
}
else
a[i + low] = working[merge2++];
}
else
a[i + low] = working[merge1++];
}
return 0;
}
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Re: Why I m getting RE for 12049- Just Prune The List

Postby brianfry713 » Tue Jun 19, 2012 11:33 pm

Doesn't match the sample I/O.
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Re: Why I m getting RE for 12049- Just Prune The List

Postby milton_iut » Wed Jun 20, 2012 8:58 am

Got AC. Just needed to decrement the value of M and N by 1 before entering into the while loop.
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Re: Why I m getting RE for 12049- Just Prune The List

Postby uvasarker » Fri Jul 13, 2012 1:17 pm

I am getting W A. Why? please help me..
Code: Select all
#include <cstdio>
#include <vector>

using namespace std;
int main()
{
    int T;
    //freopen("in-12049.txt","r",stdin);
    //freopen("O U T.txt","w",stdout);
    scanf("%d",&T);
    while(T--){
        long long n, m, tmp;
        long long fr[100010], sn[100010];
        scanf("%lld %lld",&n,&m);

        for(long i=0 ; i<n ; i++){
            scanf("%lld",&fr[i]);
        }
        for(long i=0 ; i<m ; i++){
            scanf("%lld",&sn[i]);
        }
        long long tt=0,num=0, mid=0;
        if(n>m){
                mid=(n/2);
                for(long i=0 ; i<m ; i++)
                {
                        for(long j=0 ; j<=mid ; j++)
                        {
                                if( sn[i]==fr[j] && j<mid && fr[j]!=4294967297 )
                                {
                                    fr[i]=4294967297;
                                    tt++;
                                    break;
                                }
                                else if(sn[i]==fr[(n-1)-j] && fr[(n-1)-j]!=4294967297)
                                {
                                    fr[(n-1)-j]=4294967297;
                                    tt++;
                                    break;
                                }
                        }
                }
        }
        else{
            mid=(m/2);
                for(long i=0 ; i<n ; i++)
                {
                        for(long j=0 ; j<=mid ; j++)
                        {
                                if(fr[i]==sn[j] && j<mid  && sn[j]!=4294967297 )
                                {
                                    sn[j]=4294967297;
                                    tt++;
                                    break;
                                }
                                else if(fr[i]==sn[(m-1)-j] && sn[(m-1)-j]!=4294967297 )
                                {
                                    sn[(m-1)-j]=4294967297;
                                    tt++;
                                    break;
                                }
                        }
                }
        }
        num+=n-tt;
        num+=m-tt;
        printf("%lld\n",num);
    }
    return 0;
}

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Re: Why I m getting RE for 12049- Just Prune The List

Postby brianfry713 » Tue Jul 17, 2012 11:55 pm

4294967297 is larger than a 32bit signed integer can handle.
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Re: Why I m getting RE for 12049- Just Prune The List

Postby uvasarker » Wed Jul 18, 2012 9:37 am

Guru
Please, give me some critical input / output.
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Re: Why I m getting RE for 12049- Just Prune The List

Postby brianfry713 » Thu Jul 19, 2012 3:03 am

Input:
Code: Select all
1
1 1
1
2
AC output: 2
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