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大侠们! 指导一下小弟吧!我用的算法依然是排序加回溯,但都超时了N次了。(附上程序)#include "stdio.h" #include "stdlib.h“ void bol(int a[],int T) { int i,j,change,t; for(i=T-1,change=1;i>=1&&change;i--) { change=0; for(j=0;j<i;j++) { if(a[j]<a[j+1]) { t=a[j]; a[j]=a[j+1]; a[j+1]=t; change=1; } } } } int T; int huisu(int k,int b[],int a[]); int main() { int i,k,b[70]; int num,a[70],sum,n,n2; scanf("%d",&T); while(T) { num=0; sum=0; n2=0; for(i=0;i<T;i++) { scanf("%d",&a[i]); if(a[i]>50) {a[i]=0;n2++;} sum+=a[i]; } bol(a,T); if(a[0]==0) {printf("0\n");continue;} k=sum/a[0]; printf("%d\n",a[0]); for(;k>=1;k--) { if(sum%k==0) { n=sum/k; if(a[k]+a[k-1]>n) continue; for(i=0;i<k;i++) { b[i]=n; } num=huisu(k,b,a); } if(num==1) break; } printf("%d\n",sum/k); scanf("%d",&T); } return 0; } int huisu(int k,int b[],int a[]) { int i,j; int n,m,num; int flag; n=0; m=0; for(i=0;i<k;i++) { if(b[i]!=0) { for(j=0;j<T;j++) { flag=0; if(a[j]==m) continue; if(a[j]!=0&&a[j]<=b[i]) { n=b[i]; flag=1; b[i]=b[i]-a[j]; m=a[j]; a[j]=0; if(i==(k-1)&&b[i]==0) return 1; else num=huisu(k,b,a); } if(flag==1) { if(num==1) return 1; else {b[i]=n;a[j]=m;} } } if(b[i]!=0) return 0; } } return 0; } Followed by:
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