oj.uz

Submission #894702

# Submission time Handle Problem Language Result Execution time Memory
894702 2023-12-28T18:13:45 Z CyberCow Chessboard (IZhO18_chessboard) C++17
0 / 100
 15 ms 1884 KB 
#include <random>
#include <algorithm>
#include <bitset>
#include <chrono>
#include <cmath>
#include <deque>
#include <fstream>
#include <iomanip>
#include <iostream>
#include <iterator>
#include <map>
#include <queue>
#include <set>
#include <set>
#include <stack>
#include <string>
#include <unordered_map>
#include <unordered_set>
#include <vector>
#include <chrono>
#define fr first
#define sc second
#define ad push_back
using namespace std;
using ll = long long;
mt19937 rnd(348502);

const int N = 100005;

pair<int, int> ans[N];

void solve()
{
    int n, i, j, x, y, x1, y1, k;
    cin >> n >> k;
    vector<int> baj;
    baj.push_back(1);
    for ( i = 2; i * i < n; i++)
    {
        if (n % i == 0)
        {
            baj.push_back(i);
            baj.push_back(n / i);
        }
    }
    if (i * i == n)
        baj.push_back(i);
    for ( i = 0; i < k; i++)
    {
        cin >> x >> y >> x1 >> y1;
        for ( j = 0; j < baj.size(); j++)
        {
            if (((x - 1) / baj[j] + (y - 1) / baj[j]) % 2 == 1)
            {
                ans[j].first--;
                ans[j].second++;
            }
            else
            {
                ans[j].first++;
                ans[j].second--;
            }
        }
    }
    ll anss = 1e18;
    for ( i = 0; i < baj.size(); i++)
    {
        anss = min(anss, ll(n) * n / 2 + min(ans[i].first, ans[i].second));
    }
    cout << anss;
}

int main() {
    ios_base::sync_with_stdio(false);
    cin.tie(0);
    int tt = 1;
    //cin >> tt;
    while (tt--) {
        solve();
    }
    return 0;
}

Compilation message

chessboard.cpp: In function 'void solve()':
chessboard.cpp:51:24: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   51 |         for ( j = 0; j < baj.size(); j++)
      |                      ~~^~~~~~~~~~~~
chessboard.cpp:66:20: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   66 |     for ( i = 0; i < baj.size(); i++)
      |                  ~~^~~~~~~~~~~~

Subtask #1
0 / 8.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 348 KB Output is correct
2 Incorrect 0 ms 348 KB Output isn't correct
3 Halted 0 ms 0 KB -

Subtask #2
0 / 8.0

# Verdict Execution time Memory Grader output
1 Incorrect 15 ms 1884 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #3
0 / 15.0

# Verdict Execution time Memory Grader output
1 Incorrect 1 ms 348 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #4
0 / 16.0

# Verdict Execution time Memory Grader output
1 Incorrect 1 ms 348 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #5
0 / 23.0

# Verdict Execution time Memory Grader output
1 Incorrect 15 ms 1884 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #6
0 / 30.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 348 KB Output is correct
2 Incorrect 0 ms 348 KB Output isn't correct
3 Halted 0 ms 0 KB -