T(n)=O(N^5)

每组条件只对半句

#define _CRT_SECURE_NO_WARNINGS 1
#include<stdio.h>
#include<stdlib.h>
#include<time.h>
//每组条件只对半句
//a b==2,a==3
//b b==2,e==4
//c c==1,d==2	
//d c==5,d==3
//e e==4,a==1
int main(){
	char score[5]={0};
	for(score[0]=1;score[0]<=5;score[0]++)
		for(score[1]=1;score[1]<=5;score[1]++){
			if(score[1]==score[0])
				continue;
			for(score[2]=1;score[2]<=5;score[2]++){
				if(score[2]==score[1]||score[2]==score[0])
					continue;
				for(score[3]=1;score[3]<=5;score[3]++){
					if(score[3]==score[2]||score[3]==score[1]||score[3]==score[0])
						continue;
					for(score[4]=1;score[4]<=5;score[4]++){
						if(score[4]==score[3]||score[4]==score[2]||score[4]==score[1]||score[4]==score[0])
							continue;
						if(((score[1]==2)+(score[0]==3)==1)&&((score[1]==2)+(score[4]==4)==1)&&((score[2]==1)+(score[3]==2)==1)&&((score[2]==5)+(score[3]==3)==1)&&((score[4]==4)+(score[0]==1)==1)){
							fputs("The score is:",stderr);
							for(int i=0,j='a';i<5;printf("%c-NO.%d ",j,score[i]),j++,i++);
							fputc(10,stderr);
							exit(0);
						}
					}
				}	
			}			
		}
return 0;}