1 #include <stdio.h>
 2 
 3 int main(){
 4     int s[31][31],i,j,n;
 5     while(~scanf("%d",&n)){
 6         for(i=0;i<n;i++){
 7             for(j=0;j<=i;j++){
 8                 if(j==0 || j==i){s[i][j]=1;}
 9                 else{s[i][j]=s[i-1][j]+s[i-1][j-1];}
10             }
11         }
12         for(i=0;i<n;i++){
13             for(j=0;j<=i;j++){
14                 if(j==i){printf("%d
",s[i][j]);}
15                 else{printf("%d ",s[i][j]);}
16             }
17         }
18         printf("
");
19     }
20 }

 1 #include <stdio.h>
 2 
 3 int qhs(int a){
 4     int i,j,sum,s[50];
 5     s[0]=1;j=1;
 6     for(i=2;i<=a/2;i++){
 7         if(a%i==0){s[j]=i;j++;}
 8     }
 9     sum=0;
10     for(i=0;i<j;i++){sum += s[i];}
11     return sum;
12 }
13 
14 int main(){
15     int n,i,a,b,c,s[100];
16     while(scanf("%d",&n)!=EOF){
17         while(n--){
18             scanf("%d %d",&a,&b);
19             if(qhs(a)==b || qhs(b)==a){printf("YES
");}
20             else{printf("NO
");}
21         }
22     }
23 }

 1 #include <stdio.h>
 2 
 3 int main(){
 4     int n,m,i;
 5     while(scanf("%d",&n)!=EOF){
 6         while(n--){
 7             scanf("%d",&m);
 8             i = 3;
 9             while(m--){i = (i-1)*2;}
10             printf("%d
",i);
11         }
12 
13     }
14 }

#include<stdio.h>
#include<string.h>
char a[100000],b[100000];
void change(char s[])
{
    int len,i;
    len=strlen(s);
    if(strstr(s,"."))
    {
        for(i=len-1;s[i]=='0';i--)
        {
            s[i]='