oj.uz

Submission #44064

# Submission time Handle Problem Language Result Execution time Memory
44064 2018-03-29T13:30:05 Z Nordway Chessboard (IZhO18_chessboard) C++14
0 / 100
 107 ms 1364 KB 
#include <iostream>
#include <sstream>
#include <fstream>
#include <string>
#include <vector>
#include <deque>
#include <queue>
#include <stack>
#include <set>
#include <map>
#include <algorithm>
#include <functional>
#include <utility>
#include <bitset>
#include <cmath>
#include <cstdlib>
#include <ctime>
#include <cstdio>
#include <cstring>
#include <climits>
#include <string.h>
#include <stdio.h>
#include <assert.h>

#define pb push_back
#define mp make_pair
#define low_b lower_bound
#define up_b upper_bound
#define all(v) v.begin(), v.end()

using namespace std;

typedef long long ll;
typedef long double ld;
typedef pair<int,int> pii;
typedef vector<int> vi;
typedef set<int> si;

const int N = 1e+5 + 5;

int x1[N], y[N], x2[N], y2[N];
ll ans = LLONG_MAX;

void Subtask1(int n, int i){
    ll d = n / i;
    ans = min(ans, (d % 2 == 0) ? (d / 2) * d * i * i : (d / 2 + 1) * (d / 2) * 2 * i * i);
}
void Subtask2345(int n, int i, int k){
    ll d = n / i;
    ll a = 0, b = 0;
    if(d % 2 == 0){
        for(int j = 1; j <= k; j++){
            if(((x1[j] / i) - (x1[j] % i == 0)) % 2 == 0){
                if(((y[j] / i) - (y[j] % i == 0)) % 2 == 1)b++;
                else a++;
            }
            else{
                if(((y[j] / i) - (y[j] % i == 0)) % 2 == 1)a++;
                else b++;
            }
        }
        ans = min(ans, (d / 2) * d * i * i - a + b);
    }
    else{
        for(int j = 1; j <= k; j++){
            if(((x1[j] / i) - (x1[j] % i == 0)) % 2 == 0){
                if(((y[j] / i) - (y[j] % i == 0)) % 2 == 1)a++;
                else b++;
            }
            else{
                if(((y[j] / i) - (y[j] % i == 0)) % 2 == 1)b++;
                else a++;
            }
        }
        ll c = (d / 2) * (d / 2 + 1) * 2 * i * i - a + b;
        ll e = ((d / 2 + 1) * (d / 2 + 1) + (d / 2) * (d / 2)) * i * i - b + a;
        ans = min(ans, min(c, e));
    }
}

int main(){
    int n, k;
    cin >> n >> k;
    for(int i = 1; i <= k; i++){
        cin >> x1[i] >> y[i] >> x2[i] >> y2[i];
    }
    for(int i = 1; i * i < n; i++){
        if(n % i == 0){
            if(k == 0){
                Subtask1(n, i);
                Subtask1(n, n / i);
            }
            else{
                Subtask2345(n, i, k);
                Subtask2345(n, n / i, k);
            }
        }
    }
    cout << ans;
}

Subtask #1
0 / 8.0

# Verdict Execution time Memory Grader output
1 Incorrect 2 ms 376 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #2
0 / 8.0

# Verdict Execution time Memory Grader output
1 Incorrect 107 ms 1364 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #3
0 / 15.0

# Verdict Execution time Memory Grader output
1 Incorrect 3 ms 1364 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #4
0 / 16.0

# Verdict Execution time Memory Grader output
1 Incorrect 3 ms 1364 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #5
0 / 23.0

# Verdict Execution time Memory Grader output
1 Incorrect 107 ms 1364 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #6
0 / 30.0

# Verdict Execution time Memory Grader output
1 Incorrect 2 ms 376 KB Output isn't correct
2 Halted 0 ms 0 KB -