Submission #539365

#	TimeUTC-0	Username	Problem	Language	Result	Execution time	Memory
539365	2022-03-18 18:53:01	jesus_coconut	Bulldozer (JOI17_bulldozer)	C++17	100 / 100	1721 ms	99224 KiB

bulldozer

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#include <bits/stdc++.h>
#define F first
#define S second
#define all(a) begin(a), end(a)
#define pb push_back
#define eb emplace_back
using namespace std;
using ll = long long;
using cll = complex<long long>;
using pii = pair<int, int>;
int n;
vector<pair<cll, ll>> v;
ll cross(cll a, cll b) {
    return (conj(a) * b).imag();
}
ll ccw(cll a, cll b, cll c) {
    return cross(b - a, c - b);
}
bool sign(cll a) {
    return a.imag() > 0 || (a.imag() == 0 && a.real() > 0);
}
vector<pair<cll, pair<int, int>>> events;
 
 
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Compilation message (stderr)

bulldozer.cpp: In function 'void solve()':
bulldozer.cpp:96:23: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<std::complex<long long int>, std::pair<int, int> > >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   96 |     for (int i = 0; i < size(events); ++i) {
      |                     ~~^~~~~~~~~~~~~~
bulldozer.cpp:101:19: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<std::complex<long long int>, std::pair<int, int> > >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
  101 |         if (i + 1 < size(events) && ccw(cll(0, 0), events[i].F, events[i+1].F) == 0) continue;
      |             ~~~~~~^~~~~~~~~~~~~~

• Subtask 1: 5 / 5
• Subtask 2: 20 / 20
• Subtask 3: 35 / 35
• Subtask 4: 20 / 20
• Subtask 5: 20 / 20