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不会吧!!!九个for循环爆搜就用了0ms!!!

Posted by lianxueyifang at 2010-08-12 11:00:12 on Problem 1166
#include <string.h>
#include <stdio.h>
int main()
{
      int i,a[10],b[10],c[10];
      for(i=1;i<=9;i++)
            scanf("%d",&a[i]);
      for(b[1]=0;b[1]<=3;b[1]++)
      for(b[2]=0;b[2]<=3;b[2]++)
      for(b[3]=0;b[3]<=3;b[3]++)
      for(b[4]=0;b[4]<=3;b[4]++)
      for(b[5]=0;b[5]<=3;b[5]++)
      for(b[6]=0;b[6]<=3;b[6]++)
      for(b[7]=0;b[7]<=3;b[7]++)
      for(b[8]=0;b[8]<=3;b[8]++)
      for(b[9]=0;b[9]<=3;b[9]++)  {
            c[1]=(a[1]+b[1]+b[2]+b[4])%4;
            c[2]=(a[2]+b[1]+b[2]+b[3]+b[5])%4;
            c[3]=(a[3]+b[2]+b[3]+b[6])%4;
            c[4]=(a[4]+b[1]+b[4]+b[5]+b[7])%4;
            c[5]=(a[5]+b[1]+b[3]+b[5]+b[7]+b[9])%4;
            c[6]=(a[6]+b[3]+b[5]+b[6]+b[9])%4;
            c[7]=(a[7]+b[4]+b[7]+b[8])%4;
            c[8]=(a[8]+b[5]+b[7]+b[8]+b[9])%4;
            c[9]=(a[9]+b[6]+b[8]+b[9])%4;
            if(c[1]+c[2]+c[3]+c[4]+c[5]+c[6]+c[7]+c[8]+c[9]==0) {
                    for(i=0;i<b[1];i++) printf("1 ");
                    for(i=0;i<b[2];i++) printf("2 ");
                    for(i=0;i<b[3];i++) printf("3 ");
                    for(i=0;i<b[4];i++) printf("4 ");
                    for(i=0;i<b[5];i++) printf("5 ");
                    for(i=0;i<b[6];i++) printf("6 ");
                    for(i=0;i<b[7];i++) printf("7 ");
                    for(i=0;i<b[8];i++) printf("8 ");
                    for(i=0;i<b[9];i++) printf("9 ");
                    printf("\n");
                    return(0);
            }
      }
}

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