zoj2132-The Most Frequent Number

 1 #include <cstdio>
 2 
 3 int main()
 4 {
 5     int n,ans;
 6     while(~scanf("%d",&n))
 7     {
 8         int m,cnt=0;
 9         for(int i=0;i<n;i++)
10         {
11             scanf("%d",&m);
12             if(cnt==0)  ans=m,cnt++;
13             else if(ans==m) cnt++;
14             else    cnt--;
15         }
16         printf("%d\n",ans);
17     }
18     return 0;
19 }