CodeForces 616A Comparing Two Long Integers

#include<cstdio>
#include<cstring>
#include<algorithm>
using namespace std;

const int maxn=1000000+10;
char s1[maxn],s2[maxn];
int a[maxn],b[maxn];
int lena,lenb;
int c;

int main()
{
scanf("%s%s",s1,s2);
lena=strlen(s1);
lenb=strlen(s2);

c=0; for(int i=lena-1;i>=0;i--) a[c++]=s1[i]-'0';
c=0; for(int i=lenb-1;i>=0;i--) b[c++]=s2[i]-'0';

for(int i=lena;i<max(lena,lenb);i++) a[i]=0;
for(int i=lenb;i<max(lena,lenb);i++) b[i]=0;

int flag=0;
for(int i=max(lena,lenb)-1;i>=0;i--)
{
if(a[i]!=b[i]){
if(a[i]>b[i]) printf(">\n");
else printf("<\n");
flag=1;
break;
}
}
if(!flag) printf("=\n");
return 0;
}