Submission #335747

#	TimeUTC-0	Username	Problem	Language	Result	Execution time	Memory
335747	2020-12-13 20:15:43	nafis_shifat	Discharging (NOI20_discharging)	C++14	100 / 100	446 ms	25868 KiB

Discharging

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#include<bits/stdc++.h>
#define ll long long
#define pii pair<int,int>
using namespace std;
const int mxn=1e6+5;
const ll inf=1e18;
vector<ll> m,b;
ll f(int i, ll x) { return m[i] * x + b[i]; }
bool bad(int f1,int f2,int f3) {
  return __int128(b[f3] - b[f1]) * (m[f1] - m[f2]) <= __int128(b[f2] - b[f1]) * (m[f1] - m[f3]);
}
void add(ll m_, ll b_) {
  m.push_back(m_);
  b.push_back(b_);
  int sz = m.size();
  while(sz >=3 && bad(sz-3,sz-2,sz-1)) {
    m.erase(m.end() - 2);
    b.erase(b.end() - 2);
    sz--;
  }
}
 
 
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• Subtask 2: 13 / 13
• Subtask 3: 25 / 25
• Subtask 4: 11 / 11
• Subtask 5: 14 / 14
• Subtask 6: 28 / 28