Submission #1573560


Source Code Expand

// #include <bits/stdc++.h>

#include <cassert>
#include <cctype>
#include <cerrno>
#include <cfloat>
#include <ciso646>
#include <climits>
#include <clocale>
#include <cmath>
#include <csetjmp>
#include <csignal>
#include <cstdarg>
#include <cstddef>
#include <cstdio>
#include <cstdlib>
#include <cstring>
#include <ctime>

#if __cplusplus >= 201103L
#include <ccomplex>
#include <cfenv>
#include <cinttypes>
#include <cstdbool>
#include <cstdint>
#include <ctgmath>
#include <cwchar>
#include <cwctype>
#endif

// C++
#include <algorithm>
#include <bitset>
#include <complex>
#include <deque>
#include <exception>
#include <fstream>
#include <functional>
#include <iomanip>
#include <ios>
#include <iosfwd>
#include <iostream>
#include <istream>
#include <iterator>
#include <limits>
#include <list>
#include <locale>
#include <map>
#include <memory>
#include <new>
#include <numeric>
#include <ostream>
#include <queue>
#include <set>
#include <sstream>
#include <stack>
#include <stdexcept>
#include <streambuf>
#include <string>
#include <typeinfo>
#include <utility>
#include <valarray>
#include <vector>

#if __cplusplus >= 201103L
#include <array>
#include <atomic>
#include <chrono>
#include <codecvt>
#include <condition_variable>
#include <forward_list>
#include <future>
#include <initializer_list>
#include <mutex>
#include <random>
#include <ratio>
#include <regex>
#include <scoped_allocator>
#include <system_error>
#include <thread>
#include <tuple>
#include <typeindex>
#include <type_traits>
#include <unordered_map>
#include <unordered_set>
#endif

#if __cplusplus >= 201402L
#include <shared_mutex>
#endif

using namespace std;

const int N = 205;
const int MOD = 998244353;

int x[N], y[N];

long P[N];

int main() {
    int n;
    scanf("%d", &n);
    for (int i = 0; i < n; ++i) {
        scanf("%d %d", x + i, y + i);
    }

    P[0] = 1;
    for (int i = 1; i <= n; ++i) {
        P[i] = P[i - 1] << 1;
        if (P[i] >= MOD) P[i] -= MOD;
    }

    long res = (P[n] - 1 - n + MOD) % MOD;
    for (int i = 0; i < n - 1; ++ i) {
        for (int j = i + 1; j < n; ++ j) {
            int count = 0;
            for (int k = j + 1; k < n; ++ k) {
                if ((x[k] - x[i]) * (y[j] - y[i]) == (y[k] - y[i]) * (x[j] - x[i])) {
                    count ++;
                }
            }
            res = (res - P[count] + MOD) % MOD;
        }
    }
    printf("%ld\n", res);

    return 0;
}

Submission Info

Submission Time
Task E - ConvexScore
User arkbriar
Language C++14 (GCC 5.4.1)
Score 700
Code Size 2558 Byte
Status AC
Exec Time 3 ms
Memory 256 KB

Compile Error

./Main.cpp: In function ‘int main()’:
./Main.cpp:103:20: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result]
     scanf("%d", &n);
                    ^
./Main.cpp:105:37: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result]
         scanf("%d %d", x + i, y + i);
                                     ^

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