Submission #656395

#	TimeUTC-0	Username	Problem	Language	Result	Execution time	Memory
656395	2022-11-07 09:39:20	buidangnguyen05	Discharging (NOI20_discharging)	C++17	100 / 100	119 ms	37300 KiB

Discharging

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#include<bits/stdc++.h>
using namespace std;
typedef long long ll;
const int N = 1e6 + 10;
int a[N]; ll f[N];
struct Line {
  ll A, B;
  Line() : A(0), B(0) {}
  Line (ll _a, ll _b) {
    A = _a, B = _b;
  }
};
struct ConvexHullTrick {
  Line st[N]; int sz, it = 1;
  long double G (Line x, Line y) {
    return 1.0 * (x.B - y.B) / (y.A - x.A);
  }
  ll calc(Line x, ll v) {
    return x.A * v + x.B;
  }
  void add(ll x, ll y) {
    Line cur = Line(x, y);
    if (sz && st[sz].A == x && st[sz].B <= y) return;
 
 
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Compilation message (stderr)

Discharging.cpp: In function 'int main()':
Discharging.cpp:45:10: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   45 |   freopen("discharging.inp", "r", stdin);
      |   ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Discharging.cpp:46:10: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   46 |   freopen("discharging.out", "w", stdout);
      |   ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

• Subtask 1: 9 / 9
• Subtask 2: 13 / 13
• Subtask 3: 25 / 25
• Subtask 4: 11 / 11
• Subtask 5: 14 / 14
• Subtask 6: 28 / 28