Submission #4032777

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Source Code Expand

#include<bits/stdc++.h>
using namespace std;
int main()
{
    int n,i;
    int ara[100500],sum[100500];
    for(i=0;i<100500;i++)
    {
        sum[i]=0;
    }
    long long area1=0,area2=0,a=0,b=0,c=0;
    scanf("%d",&n);
    for(i=0;i<n;i++)
    {
        scanf("%d",&ara[i]);
    }
    sort(ara,ara+n);
    for(i=0;i<n;i++)
    {
        sum[ara[i]]++;
    }



        for(i=n-1;i>=0;i=i-sum[ara[i]])
        {
            if(sum[ara[i]]>=2)
            {
                a=ara[i];
                break;
            }
        }
        for(i=n-1;i>=0;i=i-sum[ara[i]])
        {
            if(sum[ara[i]]>=2&&ara[i]!=a)
            {
                b=ara[i];
                break;
            }
        }
        for(i=n-1;i>=0;i=i-sum[ara[i]])
        {
            if(sum[ara[i]]>=4)
            {
                c=ara[i];
                break;
            }
        }
        area1=a*b;
        area2=c*c;
        //printf("%lld %lld %lld %lld %lld\n",area1,area2,a,b,c);
        if(area1>area2)
        {
            printf("%lld",area1);
        }
        else{
            printf("%lld",area2);
        }
        return 0;




}

Submission Info

Compile Error

./Main.cpp: In function ‘int main()’:
./Main.cpp:12:19: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result]
     scanf("%d",&n);
                   ^
./Main.cpp:15:28: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result]
         scanf("%d",&ara[i]);
                            ^

Judge Result