#include <stdio.h>
int main(void){
/*int a;
scanf("%d",&a);
switch(a) { case 1:printf("31dn");break; case 2:printf("28dn");break; case 3:printf("31dn");break; case 4:printf("30dn");break; case 5:printf("31dn");break; case 6:printf("30dn");break; case 7:printf("31dn");break; case 8:printf("31dn");break; case 9:printf("30dn");break; case 10:printf("31dn");break; case 11:printf("30dn");break; case 12:printf("31dn");break; default:printf("errorn");break; } */ /* printf("Enter:"); int a; scanf("%d",&a); switch (a/10) { case 8: case 9: case 10:printf("优n");break; case 7: case 6:printf("良n");break; default:printf("差n");break; } *//* int sum=0; int n,i; printf("enter:"); scanf("%d",&n); for(i=1;i<=n;i+=1) {sum=i+sum; } printf("%d",sum); */ /* int i,j,k; j=1; printf("enter:"); scanf("%d",&k); for(i=1;i<=k;i++){for(j=1;j<=i;j++){printf("%d*%d=%2d ",j,i,i*j);}printf("n"); } */ /* int i,j,k,m,s; printf("enter:"); scanf("%d",&k); for(i=1;i<=k;i++){for(j=1;j<=k-i;j++)printf(" ");for(m=1;m<=2*i-1;m++)printf("*");printf("n"); } */ /* //水仙花数1^3+5^3+3^3=153三位数 int a,b,c,d; for (a=100;a<1000;a++){b=a/100;c=a/10%10;d=a%10;if(b*b*b+c*c*c+d*d*d==a){printf("%dn",a);} */ //内存中补码 //int 32
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