Submission #1583673


Source Code Expand

#include <bits/stdc++.h>

using namespace std;

const int mod = 998244353;

int main()
{
  int fact[501];
  fact[0] = 1;
  for(int i = 1; i < 501; i++) (fact[i] = fact[i - 1] * 2) %= mod;

  int N, X[500], Y[500];
  cin >> N;
  for(int i = 0; i < N; i++) cin >> X[i] >> Y[i];

  int ret = fact[N];

  for(int i = 0; i < N; i++) {
    for(int j = i + 1; j < N; j++) {
      int sum = 0;
      for(int k = j + 1; k < N; k++) {
        sum += (X[j] - X[i]) * (Y[k] - Y[i]) == (X[k] - X[i]) * (Y[j] - Y[i]);
      }
      (ret += mod - fact[sum]) %= mod;
    }
  }

  (ret += mod - 1) %= mod;
  (ret += mod - N) %= mod;

  cout << ret << endl;
}

Submission Info

Submission Time
Task E - ConvexScore
User ei13333
Language C++14 (GCC 5.4.1)
Score 700
Code Size 673 Byte
Status AC
Exec Time 3 ms
Memory 256 KB

Judge Result

Set Name Sample All
Score / Max Score 0 / 0 700 / 700
Status
AC × 3
AC × 36
Set Name Test Cases
Sample 0_000.txt, 0_001.txt, 0_002.txt
All 0_000.txt, 0_001.txt, 0_002.txt, 1_003.txt, 1_004.txt, 1_005.txt, 1_006.txt, 1_007.txt, 1_008.txt, 1_009.txt, 1_010.txt, 1_011.txt, 1_012.txt, 1_013.txt, 1_014.txt, 1_015.txt, 1_016.txt, 1_017.txt, 1_018.txt, 1_019.txt, 1_020.txt, 1_021.txt, 1_022.txt, 1_023.txt, 1_024.txt, 1_025.txt, 1_026.txt, 1_027.txt, 1_028.txt, 1_029.txt, 1_030.txt, 1_031.txt, 1_032.txt, 1_033.txt, 1_034.txt, 1_035.txt
Case Name Status Exec Time Memory
0_000.txt AC 1 ms 256 KB
0_001.txt AC 1 ms 256 KB
0_002.txt AC 1 ms 256 KB
1_003.txt AC 1 ms 256 KB
1_004.txt AC 1 ms 256 KB
1_005.txt AC 2 ms 256 KB
1_006.txt AC 1 ms 256 KB
1_007.txt AC 2 ms 256 KB
1_008.txt AC 2 ms 256 KB
1_009.txt AC 2 ms 256 KB
1_010.txt AC 1 ms 256 KB
1_011.txt AC 2 ms 256 KB
1_012.txt AC 2 ms 256 KB
1_013.txt AC 2 ms 256 KB
1_014.txt AC 1 ms 256 KB
1_015.txt AC 2 ms 256 KB
1_016.txt AC 1 ms 256 KB
1_017.txt AC 3 ms 256 KB
1_018.txt AC 3 ms 256 KB
1_019.txt AC 3 ms 256 KB
1_020.txt AC 3 ms 256 KB
1_021.txt AC 3 ms 256 KB
1_022.txt AC 3 ms 256 KB
1_023.txt AC 3 ms 256 KB
1_024.txt AC 3 ms 256 KB
1_025.txt AC 3 ms 256 KB
1_026.txt AC 3 ms 256 KB
1_027.txt AC 3 ms 256 KB
1_028.txt AC 3 ms 256 KB
1_029.txt AC 3 ms 256 KB
1_030.txt AC 3 ms 256 KB
1_031.txt AC 3 ms 256 KB
1_032.txt AC 3 ms 256 KB
1_033.txt AC 3 ms 256 KB
1_034.txt AC 3 ms 256 KB
1_035.txt AC 3 ms 256 KB