杭电oj2032、2040、2042、2054、2055

2032  杨辉三角

 #include <stdio.h>

 int main(){
     int s[][],i,j,n;
     while(~scanf("%d",&n)){
         for(i=;i<n;i++){
             for(j=;j<=i;j++){
                 if(j== || j==i){s[i][j]=;}
                 else{s[i][j]=s[i-][j]+s[i-][j-];}
             }
         }
         for(i=;i<n;i++){
             for(j=;j<=i;j++){
                 if(j==i){printf("%d\n",s[i][j]);}
                 else{printf("%d ",s[i][j]);}
             }
         }
         printf("\n");
     }
 }

2040  亲和数

 #include <stdio.h>

 int qhs(int a){
     int i,j,sum,s[];
     s[]=;j=;
     for(i=;i<=a/;i++){
         if(a%i==){s[j]=i;j++;}
     }
     sum=;
     for(i=;i<j;i++){sum += s[i];}
     return sum;
 }

 int main(){
     int n,i,a,b,c,s[];
     while(scanf("%d",&n)!=EOF){
         while(n--){
             scanf("%d %d",&a,&b);
             if(qhs(a)==b || qhs(b)==a){printf("YES\n");}
             else{printf("NO\n");}
         }
     }
 }

2042  不容易系列之二

 #include <stdio.h>

 int main(){
     int n,m,i;
     while(scanf("%d",&n)!=EOF){
         while(n--){
             scanf("%d",&m);
             i = ;
             while(m--){i = (i-)*;}
             printf("%d\n",i);
         }

     }
 }

2054  A == B ?

#include<stdio.h>
#include<string.h>
char a[],b[];
void change(char s[])
{
    int len,i;
    len=strlen(s);
    if(strstr(s,"."))
    {
        for(i=len-;s[i]=='';i--)
        {
            s[i]='\0';
            len--;
        }
    }
    if(s[len-]=='.')
        s[len-]='\0';
}
int main()
{
    while(~scanf("%s %s",&a,&b))
    {
        change(a);
        change(b);
        if(strcmp(a,b)==)
            printf("YES\n");
        else
            printf("NO\n");
    }
    return ;
}

2055  An easy problem

 #include <stdio.h>
 #include <string.h>

 int f(char a){
     if(a>='A'&&a<='Z'){return a-;}
     if(a>='a'&&a<='z'){return -a;}
 }

 int main(){
     char a;
     int n,b,sum;
     while(scanf("%d",&n)!=EOF){
         getchar();
         while(n--){

             scanf("%c %d",&a,&b);
             getchar();
             sum = b + f(a);
             printf("%d\n",sum);

         }
     }
 }