codeforces373#A

题意：

从0 1 2 3 ...15 ...14 13...0 判断下一个数字是上升还是下降

注意 0的时候必定上升，15必定下降

#include <iostream>#include <stdio.h>#include <algorithm>#include <math.h>using namespace std;int a[100];int main(){    int n;    cin>>n;    for(int i=1;i<=n;i++)        cin>>a[i];    if(n==1)    {        if(a[n]==0)            cout<<"UP"<<endl;        else if(a[n]==15)            cout<<"DOWN"<<endl;        else            cout<<-1<<endl;    }    else    {        if(a[n]>a[n-1])        {            if(a[n]==15)            {                cout<<"DOWN"<<endl;            }            else                cout<<"UP"<<endl;        }        if(a[n]<a[n-1])        {            if(a[n]==0)                cout<<"UP"<<endl;            else                cout<<"DOWN"<<endl;        }    }    return 0;}