1 #include <stdio.h>
 2 int main()
 3 {
 4 int n;
 5 while(~scanf("%d",&n) && n)
 6 {
 7 printf("%d\n",n/2);
 8 }
 9 return 0;
10 }

 1 #include <stdio.h>
 2 int main()
 3 {
 4     int n;
 5     while(scanf("%d",&n)==1 && n)
 6     {
 7         int Sum=0;
 8         while(n>=3)
 9         {
10             Sum+=n/3;
11             n=n/3+n%3;
12         }
13         if(n==2)
14         {
15             ++Sum;
16         }
17         printf("%d\n",Sum);
18     }
19     return 0;
20 }

 1 #include <stdio.h>
 2
 3 int main()
 4 {
 5     int a, b, res, ans = 0;
 6     char op, re[3];
 7     while(~scanf("%d%c%d=%s", &a, &op, &b, re))
 8     {
 9         if(re[0] == '?')continue;
10         sscanf(re,"%d", &res);
11         if(op == '-' && a-b == res)ans ++;
12         else if(op == '+' && a+b == res)ans++;
13     }
14     printf("%d\n",ans);
15     return 0;
16 }

 1 import java.math.*;
 2 import java.util.*;
 3 import java.io.*;
 4
 5 public class Main{
 6     public static void main(String[] args) throws Exception
 7     {
 8         Scanner cin = new Scanner(new BufferedInputStream(System.in));
 9         BigInteger p;
10         while(cin.hasNext())
11         {
12             p = cin.nextBigInteger();
13             if(p.equals(BigInteger.valueOf(0)))break;
14             BigInteger ten = new BigInteger("10");
15             BigInteger five = new BigInteger("5");
16             BigInteger Seventeen = new BigInteger("17");
17             BigInteger divideTen = p.divide(ten);
18             BigInteger flag =divideTen;
19             divideTen= divideTen.multiply(ten);
20             BigInteger cha = p.subtract(divideTen);
21             cha = cha.multiply(five);
22             flag = flag.subtract(cha);
23             BigInteger temp = flag;
24             flag = flag.divide(Seventeen);
25             flag = flag.multiply(Seventeen);
26             boolean ok = temp.equals(flag);
27             System.out.println(ok == true ? 1 : 0);
28         }
29     }
30 }

 1 #include<stdio.h>
 2 #include<string.h>
 3
 4 int Same(char *str,const char *cmp)
 5 {
 6     int s=0;
 7     for(int i=0;str[i]&&cmp[i];++i)
 8     {
 9         if(str[i]==cmp[i]) ++s;
10     }
11     return s;
12 }
13
14 int main()
15 {
16     int T;
17     char str[1005];
18     while(scanf("%d",&T)==1) while(T--)
19     {
20         scanf("%s",str);
21         if(strlen(str)==5)
22         {
23             printf("3\n");
24         }
25         else
26         {
27             int Same1=Same(str,"one");
28             int Same2=Same(str,"two");
29             printf("%d\n",Same1>Same2?1:2);
30         }
31     }
32     return 0;
33 }

 1 #include <stdio.h>
 2
 3 int judge(int n)
 4 {
 5     if(n%7 == 0)return 1;
 6     while(n)
 7     {
 8         if(n%10 == 7)return 1;
 9         n/=10;
10     }
11     return 0;
12 }
13
14 int main()
15 {
16     int n,m,k;
17     while(~scanf("%d%d%d", &n,&m,&k) &&(m||n||k))
18     {
19         int ans = 0,bao = m;
20         if(judge(bao)){k--;}
21         ans = bao;
22         while(k)
23         {
24             bao+=(2*(n-m));
25             if(judge(bao)){ans = bao;k--;}
26             if(!k)break;
27             bao += (2*(m-1));
28             if(judge(bao)){ans = bao;k--;}
29             if(n==m || m==1)if(judge(bao))k++;
30         }
31         printf("%d\n",ans);
32     }
33     return 0;
34 }

 1 #include <stdio.h>
 2 #include <math.h>
 3
 4 int main()
 5 {
 6     double n;
 7     while(~scanf("%lf",&n) && n )
 8     {
 9         n+=1;
10         double ans = log(n)/log(2);
11         printf("%s\n", ans==(int)ans ? "Bob" : "Alice");
12     }
13     return 0;
14 }

 1 #include <stdio.h>
 2 #define MAX(a,b) (a) > (b) ? (a) : (b)
 3 int main()
 4 {
 5     int Case;
 6     while(~scanf("%d", &Case))while(Case --)
 7     {
 8         int sum[402] = {0},n,m,a,ans=0;
 9         scanf("%d%d", &n,&m);
10         for(int i=1;i<=n;i++)
11         {
12             scanf("%d",&a);
13             sum[i]=sum[i-1]+a;
14             sum[i+n] = sum[i];
15         }
16         for(int i=m;i<=n+m;i++)
17         {
18             if(i>n)sum[i]+=sum[n];
19             ans = MAX(ans, sum[i]-sum[i-m]);
20         }
21         printf("%d\n", ans);
22     }
23     return 0;
24 }

 1 #include <stdio.h>
 2 #include <string.h>
 3
 4 #define MAX(a,b)  (a)>(b)?(a):(b)
 5
 6 const int Hash[3]={-1,0,1};
 7
 8 int x,y;
 9
10 int Cnt(int a,int b,int c)
11 {
12     bool HashCnt[500];
13     memset(HashCnt,0,sizeof(HashCnt));
14     for(int i=0;i<3;++i)
15     {
16         for(int j=0;j<3;++j)
17         {
18             for(int k=0;k<3;++k)
19             {
20                 int sss=a*Hash[i]+b*Hash[j]+c*Hash[k];
21                 if(sss>0)
22                 {
23                     HashCnt[sss]=true;
24                 }
25             }
26         }
27     }
28     int sum=0;
29     for(int m=1;m<=x+y;++m)
30     {
31         sum+=HashCnt[m];
32     }
33     return sum;
34 }
35
36
37 int main()
38 {
39     int T;
40     while(scanf("%d",&T)==1) while(T--)
41     {
42         scanf("%d%d",&x,&y);
43         int Ans=0;
44         for(int i=1;i+i<=x;++i)
45         {
46             int Kep=Cnt(i,x-i,y);
47             Ans=MAX(Ans,Kep);
48         }
49         for(int j=1;j+j<=y;++j)
50         {
51             int Kep=Cnt(x,j,y-j);
52             Ans=MAX(Ans,Kep);
53          }
54         printf("%d\n",Ans);
55     }
56     return 0;
57 }