Submission #1187806


Source Code Expand

#include <bits/stdc++.h>
using namespace std;
#define int long long
#define double long double
#define all(v) begin(v), end(v)
#define FOR(i,a,b) for(int i=(a);i<(int)(b);i++)
#define rep(i,b) FOR(i,0,b)

const int mod = 1e9+7;

double ax,ay,bx,by;
int n;
double x[110],y[110];
signed main(){
  cin>>ax>>ay>>bx>>by;
  cin>>n;
  for(int i=0;i<n;i++){
    cin>>x[i]>>y[i];
  }
  int ans=0;
  for(int i=0;i<n-1;i++){
    double temp=(bx-ax)*(y[i]-by)-(by-ay)*(x[i]-bx);
    double temp2=(bx-ax)*(y[i+1]-by)-(by-ay)*(x[i+1]-bx);
    if(temp*temp2<0)ans++;
  }
  double temp=(bx-ax)*(y[n-1]-by)-(by-ay)*(x[n-1]-bx);
  double temp2=(bx-ax)*(y[0]-by)-(by-ay)*(x[0]-bx);
  if(temp*temp2<0)ans++;

  cout<<ans/2 +1<<endl;
  return 0;
}

Submission Info

Submission Time
Task D - 一刀両断
User albicilla
Language C++14 (GCC 5.4.1)
Score 0
Code Size 759 Byte
Status WA
Exec Time 1 ms
Memory 256 KB

Judge Result

Set Name All
Score / Max Score 0 / 100
Status
AC × 16
WA × 16
Set Name Test Cases
All 00_sample_00.txt, 00_sample_01.txt, 10_rand_00.txt, 10_rand_01.txt, 10_rand_02.txt, 10_rand_03.txt, 10_rand_04.txt, 10_rand_05.txt, 10_rand_06.txt, 10_rand_07.txt, 10_rand_08.txt, 10_rand_09.txt, 10_rand_10.txt, 10_rand_11.txt, 10_rand_12.txt, 10_rand_13.txt, 10_rand_14.txt, 10_rand_15.txt, 10_rand_16.txt, 10_rand_17.txt, 10_rand_18.txt, 10_rand_19.txt, 10_rand_20.txt, 10_rand_21.txt, 10_rand_22.txt, 10_rand_23.txt, 10_rand_24.txt, 10_rand_25.txt, 10_rand_26.txt, 10_rand_27.txt, 10_rand_28.txt, 10_rand_29.txt
Case Name Status Exec Time Memory
00_sample_00.txt AC 1 ms 256 KB
00_sample_01.txt AC 1 ms 256 KB
10_rand_00.txt WA 1 ms 256 KB
10_rand_01.txt AC 1 ms 256 KB
10_rand_02.txt AC 1 ms 256 KB
10_rand_03.txt AC 1 ms 256 KB
10_rand_04.txt WA 1 ms 256 KB
10_rand_05.txt WA 1 ms 256 KB
10_rand_06.txt WA 1 ms 256 KB
10_rand_07.txt WA 1 ms 256 KB
10_rand_08.txt AC 1 ms 256 KB
10_rand_09.txt AC 1 ms 256 KB
10_rand_10.txt WA 1 ms 256 KB
10_rand_11.txt AC 1 ms 256 KB
10_rand_12.txt AC 1 ms 256 KB
10_rand_13.txt WA 1 ms 256 KB
10_rand_14.txt WA 1 ms 256 KB
10_rand_15.txt AC 1 ms 256 KB
10_rand_16.txt AC 1 ms 256 KB
10_rand_17.txt AC 1 ms 256 KB
10_rand_18.txt WA 1 ms 256 KB
10_rand_19.txt WA 1 ms 256 KB
10_rand_20.txt AC 1 ms 256 KB
10_rand_21.txt AC 1 ms 256 KB
10_rand_22.txt WA 1 ms 256 KB
10_rand_23.txt WA 1 ms 256 KB
10_rand_24.txt AC 1 ms 256 KB
10_rand_25.txt WA 1 ms 256 KB
10_rand_26.txt WA 1 ms 256 KB
10_rand_27.txt WA 1 ms 256 KB
10_rand_28.txt WA 1 ms 256 KB
10_rand_29.txt AC 1 ms 256 KB