hdu 5038 水题 可是题意坑

http://acm.hdu.edu.cn/showproblem.php?pid=5038


就是求个众数  这个范围小 所以一个数组存是否存在的状态即可了

可是这句话真恶心  If not all the value are the same but the frequencies of them are the same, there is no mode.

事实上应该是这个意思:

当频率最高的有多个的时候。
假设 全部的grade出现的频率都是相等的,那么是没有mode的

否则依照升序


当然假设频率最高的有一个。还是有mode的


//#pragma comment(linker, "/STACK:102400000,102400000")
#include <cstdio>
#include <cstring>
#include <algorithm>
#include <string>
#include <iostream>
#include <iomanip>
#include <cmath>
#include <map>
#include <set>
#include <queue>
using namespace std;

#define ls(rt) rt*2
#define rs(rt) rt*2+1
#define ll long long
#define ull unsigned long long
#define rep(i,s,e) for(int i=s;i<e;i++)
#define repe(i,s,e) for(int i=s;i<=e;i++)
#define CL(a,b) memset(a,b,sizeof(a))
#define IN(s) freopen(s,"r",stdin)
#define OUT(s) freopen(s,"w",stdout)
const ll ll_INF = ((ull)(-1))>>1;
const double EPS = 1e-8;
const double pi = acos(-1.0);
const int INF = 100000000;

const int MAXN = 1e6+200;
int g[MAXN];
int a[MAXN],n,vis[MAXN];
int cnt[MAXN];
int out[MAXN];
//map<int,int>cnt;

int main()
{
    //IN("hdu5038.txt");
    int ncase,n;
    scanf("%d",&ncase);
    for(int ic=1;ic<=ncase;ic++)
    {
        CL(cnt,0);
        CL(vis,0);
        scanf("%d",&n);
        int mmax=0;//,mm=0;
        for(int i=0;i<n;i++)
        {
             scanf("%d",&a[i]);
             g[i]=10000 - (100-a[i])*(100-a[i]);
             cnt[g[i]]++;
             //vis[a[i]]=1;
             mmax=max(mmax,cnt[g[i]]);
            // mm=max(mm,g[i]);
        }
        int flag=0;
        int cc=0;
        for(int i=0;i<n;i++)
        {
            if(mmax == cnt[g[i]] && !vis[g[i]])
            {
                out[cc++]=g[i];
                vis[g[i]]=1;
            }
            if(mmax != cnt[g[i]])
            {
                flag=1;
            }
        }
        printf("Case #%d:
",ic);
        if(flag==0 && cc>1)puts("Bad Mushroom");
        else
        {
            sort(out,out+cc);
            printf("%d",out[0]);
            int last=out[0];
            for(int i=1;i<cc;i++)
            {
                   if(out[i]!=last)
                   {
                       last=out[i];
                       printf(" %d",out[i]);
                   }
            }
            putchar('
');
        }
    }
    return 0;
}


原文地址:https://www.cnblogs.com/blfbuaa/p/6705462.html