Submission #19929510

Source Code Expand

#include <atcoder/all>
using namespace atcoder;
#include <bits/stdc++.h>
using namespace std;
using ll = long long;
const double pi = 3.14159265359;
const ll INF = 1LL << 60;

int main()
{ 
  int n;
  cin >> n;
  vector<ll> x(n);
  vector<ll> y(n);
  for (int i = 0; i < n; i++){
    cin >> x[i] >> y[i];
  }

  ll ans = 0;
  for (int i = 0; i < n-2; i++){
    ll x0 = x[i];
    ll y0 = y[i];
    for (int j = i+1; j < n-1; j++){
      ll x1 = x[j];
      ll y1 = y[j];
      for (int k = j+1; k < n; k++){
        ll x2 = x[k];
        ll y2 = y[k];
        ll a = x1 - x0;
        ll b = y1 - y0;
        ll c = x2 - x0;
        ll d = y2 - y0;
        ll area = abs(a * d - b * c);
        if (area != 0 && area % 2 == 0) ans++;
      }
    }
  }
  cout << ans << endl;
  return 0;
}

Submission Info

Submission Time
Task B - 格子点と整数
User unnohideyuki
Language C++ (GCC 9.2.1)
Score 100
Code Size 825 Byte
Status AC
Exec Time 8 ms
Memory 3648 KiB

Judge Result

Set Name All
Score / Max Score 100 / 100
Status
AC × 75
Set Name Test Cases
All case_01.txt, case_02.txt, case_03.txt, case_04.txt, case_05.txt, case_06.txt, case_07.txt, case_08.txt, case_09.txt, case_10.txt, case_11.txt, case_12.txt, case_13.txt, case_14.txt, case_15.txt, case_16.txt, case_17.txt, case_18.txt, case_19.txt, case_20.txt, case_21.txt, case_22.txt, case_23.txt, case_24.txt, case_25.txt, case_26.txt, case_27.txt, case_28.txt, case_29.txt, case_30.txt, case_31.txt, case_32.txt, case_33.txt, case_34.txt, case_35.txt, case_36.txt, case_37.txt, case_38.txt, case_39.txt, case_40.txt, case_41.txt, case_42.txt, case_43.txt, case_44.txt, case_45.txt, case_46.txt, case_47.txt, case_48.txt, case_49.txt, case_50.txt, case_51.txt, case_52.txt, case_53.txt, case_54.txt, case_55.txt, case_56.txt, case_57.txt, case_58.txt, case_59.txt, case_60.txt, case_61.txt, case_62.txt, case_63.txt, case_64.txt, case_65.txt, case_66.txt, case_67.txt, case_68.txt, case_69.txt, case_70.txt, case_71.txt, sample_1.txt, sample_2.txt, sample_3.txt, sample_4.txt
Case Name Status Exec Time Memory
case_01.txt AC 4 ms 3648 KiB
case_02.txt AC 3 ms 3544 KiB
case_03.txt AC 2 ms 3544 KiB
case_04.txt AC 2 ms 3488 KiB
case_05.txt AC 2 ms 3516 KiB
case_06.txt AC 5 ms 3492 KiB
case_07.txt AC 2 ms 3428 KiB
case_08.txt AC 2 ms 3644 KiB
case_09.txt AC 2 ms 3536 KiB
case_10.txt AC 2 ms 3452 KiB
case_11.txt AC 3 ms 3596 KiB
case_12.txt AC 2 ms 3540 KiB
case_13.txt AC 3 ms 3596 KiB
case_14.txt AC 2 ms 3536 KiB
case_15.txt AC 3 ms 3596 KiB
case_16.txt AC 2 ms 3488 KiB
case_17.txt AC 3 ms 3528 KiB
case_18.txt AC 2 ms 3516 KiB
case_19.txt AC 2 ms 3592 KiB
case_20.txt AC 2 ms 3452 KiB
case_21.txt AC 3 ms 3452 KiB
case_22.txt AC 2 ms 3540 KiB
case_23.txt AC 5 ms 3592 KiB
case_24.txt AC 2 ms 3496 KiB
case_25.txt AC 3 ms 3648 KiB
case_26.txt AC 2 ms 3592 KiB
case_27.txt AC 3 ms 3596 KiB
case_28.txt AC 2 ms 3488 KiB
case_29.txt AC 2 ms 3596 KiB
case_30.txt AC 2 ms 3460 KiB
case_31.txt AC 2 ms 3596 KiB
case_32.txt AC 2 ms 3424 KiB
case_33.txt AC 2 ms 3532 KiB
case_34.txt AC 2 ms 3496 KiB
case_35.txt AC 2 ms 3600 KiB
case_36.txt AC 3 ms 3640 KiB
case_37.txt AC 2 ms 3456 KiB
case_38.txt AC 2 ms 3600 KiB
case_39.txt AC 8 ms 3496 KiB
case_40.txt AC 2 ms 3448 KiB
case_41.txt AC 2 ms 3640 KiB
case_42.txt AC 4 ms 3460 KiB
case_43.txt AC 3 ms 3492 KiB
case_44.txt AC 2 ms 3592 KiB
case_45.txt AC 2 ms 3532 KiB
case_46.txt AC 2 ms 3516 KiB
case_47.txt AC 2 ms 3428 KiB
case_48.txt AC 2 ms 3456 KiB
case_49.txt AC 2 ms 3496 KiB
case_50.txt AC 3 ms 3492 KiB
case_51.txt AC 3 ms 3424 KiB
case_52.txt AC 3 ms 3596 KiB
case_53.txt AC 3 ms 3536 KiB
case_54.txt AC 4 ms 3488 KiB
case_55.txt AC 2 ms 3496 KiB
case_56.txt AC 3 ms 3544 KiB
case_57.txt AC 3 ms 3604 KiB
case_58.txt AC 3 ms 3496 KiB
case_59.txt AC 3 ms 3428 KiB
case_60.txt AC 3 ms 3428 KiB
case_61.txt AC 3 ms 3648 KiB
case_62.txt AC 4 ms 3648 KiB
case_63.txt AC 7 ms 3424 KiB
case_64.txt AC 3 ms 3604 KiB
case_65.txt AC 3 ms 3540 KiB
case_66.txt AC 3 ms 3428 KiB
case_67.txt AC 3 ms 3596 KiB
case_68.txt AC 4 ms 3596 KiB
case_69.txt AC 4 ms 3536 KiB
case_70.txt AC 4 ms 3492 KiB
case_71.txt AC 2 ms 3592 KiB
sample_1.txt AC 2 ms 3640 KiB
sample_2.txt AC 2 ms 3424 KiB
sample_3.txt AC 2 ms 3600 KiB
sample_4.txt AC 3 ms 3532 KiB