【神奇の做法】bzoj2456 mode

题解：http://www.tuicool.com/articles/BfQBzif

 #include<cstdio>
 using namespace std;
 int n,x,ans,tot;
 int main()
 {
     scanf("%d",&n);
     for(;n>;n--)
       {
           scanf("%d",&x);
           if(!tot) {ans=x; tot=;}
           else if(x==ans) tot++;
           else tot--;
       }
     printf("%d\n",ans);
     return ;
 }