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高手帮忙看看哪里错了?#include <iostream> using namespace std; int a[51]; int f(int a[],int n) { int x; if(n == 2) { return a[1]; } if(n == 3) { return a[0]+a[1]+a[2]; } if(n > 3) { //两种可能,一种是最小和次小分别带最大和次大,一种是最小的分别带过最大的和次大的,取最优的 if( (2*a[1]+a[n-1]+a[0]) < (2*a[0]+a[n-2]+a[n-1])) { x = (2*a[1]+a[n-1]+a[0]); } else { x = (2*a[0]+a[n-2]+a[n-1]); } return f(a,n-2) + x ; } return 0; } int main() { int n,i,j,temp; cin>>n; for(i=0; i<n; i++) { cin>>a[i]; } for(i=0;i<n-1;i++) for(j=0;j<n-i-1;j++) { if(a[j]>a[j+1]) { temp = a[j]; a[j] = a[j+1]; a[j+1] = temp; } } cout<<f(a,n)<<endl; return 0; } Followed by: Post your reply here: |
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