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
1 #include <stdio.h> 2 int lottery(int *,int); 3 int main(void) 4 { 5 //freopen("in.txt","r",stdin); 6 int n; 7 int num[100000]; 8 int i; 9 10 scanf("%d",&n); 11 for(i=0;i<n;i++) 12 { 13 scanf("%d",&num[i]); 14 } 15 lottery(num,n); 16 return 0; 17 } 18 int lottery (int *num,int n) 19 { 20 int i,j; 21 int flag; 22 int count[100000]={0}; 23 24 for(i=0;i<n;i++) 25 { 26 count[num[i]]++; 27 } 28 29 for(i=0;i<n;i++) 30 { 31 if(count[num[i]]==1) 32 { 33 printf("%d\n",num[i]); 34 return 0; 35 } 36 } 37 38 39 printf("None\n"); 40 return 0; 41 }
不好意思,這個我還沒學......
不好意思啊......不好意思
Countermeasure and detailed steps
SO strategy
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WO strategy
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ST strategy
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◆ Strengthen the cooperation wit......余下全文>>