晕死,纯水题,竟然在最后给挂了!1
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using namespace std;
char s1[100005];
char s2[100005];
int main()
{
while(~scanf("%s%s",s1,s2))
{
int wrong=0;
found=false;
if(strlen(s1)!=strlen(s2))
{
cout<<"NO"<<endl;
continue;
}
zero(hash);
char c1,c2;
for(int i=0;s1[i];i++)
{
if(s1[i]!=s2[i])
{
wrong++;
if(wrong==1)
{
c1=s1[i];
c2=s2[i];
}
if(wrong==2)
{
if(s1[i]!=c2||s2[i]!=c1)
wrong++;
}
if(wrong>2)
break;
}
}
if(wrong==2)
cout<<"YES"<<endl;
else
cout<<"NO"<<endl;
}
return 0;
}