《算法竞赛入门经典》第一章1.4

 1 #include<stdio.h>
 2 int main()
 3 {
 4     int a,b,n,m;
 5     scanf("%d%d",&n,&m);
 6     a=(4*n-m)/2;
 7     b=n-a;
 8     if(n%2==1||a<0||b<0)
 9         printf("No answer\n");
10     else
11         printf("%d %d",a,b);
12     return 0;
13 }

 1 #include<stdio.h>
 2 int main()
 3 {
 4     int a,b,c;
 5     scanf("%d%d%d",&a,&b,&c);
 6     if(a<b&&b<c)printf("%d %d %d",a,b,c);
 7     if(a<c&&c<b)printf("%d %d %d",a,c,b);
 8     if(b<a&&a<c)printf("%d %d %d",b,a,c);
 9     if(b<c&&c<a)printf("%d %d %d",b,c,a);
10     if(c<a&&a<b)printf("%d %d %d",c,a,b);
11     if(c<b&&b<a)printf("%d %d %d",c,b,a);
12     return 0;
13 }

 1 #include<stdio.h>
 2 int main()
 3 {
 4     int a,b,c;
 5     scanf("%d%d%d",&a,&b,&c);
 6     if(a<=b&&b<=c)printf("%d %d %d",a,b,c);
 7     else if(a<=c&&c<=b)printf("%d %d %d",a,c,b);
 8     else if(b<=a&&a<=c)printf("%d %d %d",b,a,c);
 9     else if(b<=c&&c<=a)printf("%d %d %d",b,c,a);
10     else if(c<=a&&a<=b)printf("%d %d %d",c,a,b);
11     else if(c<=b&&b<=a)printf("%d %d %d",c,b,a);
12     return 0;
13 }

 1 #include<stdio.h>
 2 int main()
 3 {
 4     int a,b,c,t;
 5     scanf("%d%d%d",&a,&b,&c);
 6     if(a>b){t=a;a=b;b=t;}
 7     if(a>c){t=a;a=c;c=t;}
 8     if(b>c){t=b;b=c;c=t;}
 9     printf("%d %d %d",a,b,c);
10     return 0;
11 }