Submission #49306

#	TimeUTC-0	Username	Problem	Language	Result	Execution time	Memory
49306	2018-05-25 11:38:14	tmwilliamlin168	Building Bridges (CEOI17_building)	C++14	100 / 100	102 ms	47556 KiB

building

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#include <bits/stdc++.h>
using namespace std;
#define ll long long
#define pll pair<ll, ll>
#define fi first
#define se second
const int mxN=1e5, mxH=1e6, sts=1<<21;
int n;
ll h[mxN], pw[mxN+1];
pll st[sts];
void upd(pll nl, int i=1, int l=0, int r=mxH) {
//  if(i==1)
//    cout << nl.fi << " " << nl.se << endl;
  int m=(l+r)/2;
  if(nl.fi*m+nl.se<st[i].fi*m+st[i].se)
    swap(nl, st[i]);
  if(l==r)
    return;
  if(nl.fi*l+nl.se<st[i].fi*l+st[i].se)
    upd(nl, 2*i, l, m);
  else
    upd(nl, 2*i+1, m+1, r);
}
ll qry(int x, int i=1, int l=0, int r=mxH) {
  int m=(l+r)/2;
  ll s=st[i].fi*x+st[i].se;
 
 
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• Subtask 1: 30 / 30
• Subtask 2: 30 / 30
• Subtask 3: 40 / 40