标签:bets 1041 20 int 31 number Sample 88 Unique
Being unique is so important to people on Mars that even their lottery is designed in a unique way. The rule of winning is simple: one bets on a number chosen from [1,104]. The first one who bets on a unique number wins. For example, if there are 7 people betting on { 5 31 5 88 67 88 17 }, then the second one who bets on 31 wins.
Input Specification:
Each input file contains one test case. Each case contains a line which begins with a positive integer N (≤105) and then followed by N bets. The numbers are separated by a space.
Output Specification:
For each test case, print the winning number in a line. If there is no winner, print None
instead.
Sample Input 1:
7 5 31 5 88 67 88 17
Sample Output 1:
31
Sample Input 2:
5 888 666 666 888 888
Sample Output 2:
None
#include<bits/stdc++.h> using namespace std; int main(){ int n; cin>>n; int bet[100005]; int count[10005]={0}; bool flag=false; for (int i=0;i<n;++i){ cin>>bet[i]; count[bet[i]]++; } for (int i=0;i<n;++i){ if (count[bet[i]]==1){ cout<<bet[i]; flag=true; break; } } if(!flag){ cout<<"None"; } }
标签:bets,1041,20,int,31,number,Sample,88,Unique 来源: https://www.cnblogs.com/coderhrz/p/16464313.html
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