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超级无敌流氓打表法首先,写个程序算出N=2,4,6,8,10时一共有多少张Lucky Tickets。 演示一个当N=10有多少张Lucky Tickets。 #include<iostream> using namespace std; int main() { int count=0,a,b,c,d,e,f,g,h,i,j; for(a=0;a<=9;a++) for(b=0;b<=9;b++) for(c=0;c<=9;c++) for(d=0;d<=9;d++) for(e=0;e<=9;e++) for(f=0;f<=9;f++) for(g=0;g<=9;g++) for(h=0;h<=9;h++) for(i=0;i<=9;i++) for(j=0;j<=9;j++) if(a+b+c+d+e==f+g+h+i+j) count++; cout<<count<<endl; return 0; } 然后就是流氓打表法: #include<iostream> using namespace std; int main() { int a[]={0,10,670,55252,4816030,432457640},n; while(cin>>n) cout<<a[n/2]<<endl; return 0; } Followed by:
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