合并车厢
http://47.96.116.66/problem.php?cid=1177&pid=1
http://47.96.116.66/problem.php?cid=1180&pid=1
題解:枚舉不動(dòng)的車箱,其他向不動(dòng)車廂靠攏
/* *@Author: STZG *@Language: C++ */ #include <bits/stdc++.h> #include<iostream> #include<algorithm> #include<cstdlib> #include<cstring> #include<cstdio> #include<string> #include<vector> #include<bitset> #include<queue> #include<deque> #include<stack> #include<cmath> #include<list> #include<map> #include<set> //#define DEBUG #define RI register int using namespace std; typedef long long ll; //typedef __int128 lll; const int N=100000+10; const int M=100000+10; const int MOD=1e9+7; const double PI = acos(-1.0); const double EXP = 1E-8; const int INF = 0x3f3f3f3f; int t,n,m,k,q; ll ans,cnt,flag,temp,sum; ll a[N],b[N]; char str; struct node{long long l,r; }e[N]; bool cmp(node a,node b){return a.l<b.l; } int main() { #ifdef DEBUGfreopen("input.in", "r", stdin);//freopen("output.out", "w", stdout); #endif//ios::sync_with_stdio(false);//cin.tie(0);//cout.tie(0);//scanf("%d",&t);//while(t--){scanf("%d",&n);for(int i=1;i<=n;i++){scanf("%lld",&a[i]);e[i].l=a[i];}for(int i=1;i<=n;i++){scanf("%lld",&b[i]);e[i].r=b[i]+a[i];}sort(e+1,e+n+1,cmp);for(int i=1;i<n;i++){a[i]=e[i+1].l-e[i].r;//cout<<a[i]<<endl;}ans=0x3f3f3f3f3f3f;for(int i=1;i<=n;i++){temp=0;for(int j=1;j<i;j++){temp+=j*a[j];}for(int j=i;j<n;j++){temp+=(n-j)*a[j];}ans=min(ans,temp);}cout<<ans<<endl;//}#ifdef DEBUGprintf("Time cost : %lf s\n",(double)clock()/CLOCKS_PER_SEC); #endif//cout << "Hello world!" << endl;return 0; }?
與50位技術(shù)專家面對(duì)面20年技術(shù)見(jiàn)證,附贈(zèng)技術(shù)全景圖總結(jié)