标签:重复 \n else ios cin 个数 pre int def
给你一个数列(0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 14, 13, 12, 11, 10, 9, 8, 7, 6, 5, 4, 3, 2, 1),然后重复循环这个数列,输入一个n,再输入有n个元素的某段,问你接下来是UP还是DOWN,若无法判断输出-1。
思路:
枚举各种情况,注意n==1,a[n]==15是DOWN。
#include<bits/stdc++.h>
using namespace std;
#define ll long long
int main()
{
ios::sync_with_stdio(false);
cin.tie(0);
cout.tie(0);
int n,i,a[100];
cin>>n;
for(i=1;i<=n;i++)
cin>>a[i];
if(n==1&&a[n]==0){
cout<<"UP\n";
}
else if(n==1&&a[n]==15){
cout<<"DOWN\n";
}
else if(n==1&&a[n]!=0)
{
cout<<-1<<endl;
}
else if(a[n-1]<a[n]&&a[n]!=15)
{
cout<<"UP\n";
}
else if(a[n-1]<a[n]&&a[n]==15){
cout<<"DOWN\n";
}
else if(a[n-1]>a[n]&&a[n]!=0){
cout<<"DOWN\n";
}
else if(a[n-1]>a[n]&&a[n]==0){
cout<<"UP\n";
}
return 0;
}
CodeForces 719A. Vitya in the Countryside
标签:重复 \n else ios cin 个数 pre int def
原文地址:https://www.cnblogs.com/mch5201314/p/9365338.html