Submission #35869

#	TimeUTC-0	Username	Problem	Language	Result	Execution time	Memory
35869	2017-12-01 14:04:36	funcsr	Building Bridges (CEOI17_building)	C++14	100 / 100	766 ms	23176 KiB

building

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#include <iostream>
#include <vector>
#include <queue>
#include <string>
#include <set>
#include <cassert>
#define rep(i, n) for (int i=0; i<(n); i++)
#define all(xs) xs.begin(), xs.end()
#define INF (1LL<<60)
#define _1 first
#define _2 second
using namespace std;
typedef pair<int, long long> P;
P operator -(const P &a, const P &b) { return P(a._1-b._1, a._2-b._2); }
inline long long det(P a, P b) { return 1LL*a._1*b._2 - 1LL*a._2*b._1; }
int N;
int H[100000], W[100000];
long long dp[1000001];
long long f[1000001];
inline P get(int x) { return P(x, f[x]); }
set<int, bool(*)(int, int)> *p_ps;
bool comp(int a, int b) {
  if (a < 0) return !comp(b, a);
  if (b < 0) {
    auto r = ++p_ps->find(a);
    return !(r == p_ps->end() || det(get(*r)-get(a), P(1, -b)) <= 0);
  }
  return a < b;
 
 
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• Subtask 1: 30 / 30
• Subtask 2: 30 / 30
• Subtask 3: 40 / 40