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Submission #342716

# Submission time Handle Problem Language Result Execution time Memory
342716 2021-01-02T16:39:27 Z koketsu Chessboard (IZhO18_chessboard) C++14
70 / 100
 266 ms 4204 KB 
#include <bits/stdc++.h>
#define pb push_back
#define LL long long
#define Kultivator ios_base::sync_with_stdio(0); cin.tie(0); cout.tie(0);
#define int LL

using namespace std;

const LL Mxn = 1e6 + 7;
const LL Mod = 1e9 + 7;
const LL Inf = 1e14 + 7;

bool Prime(int N){
    bool Used = false;
    for(int i = 2; i <= sqrt(N); i++){
        if(N % i == 0){
            Used = true;
            break;
        }
    }
    return Used;
}

bool Get(int x, int y, int d){
    return (x / d + y / d) % 2;
}

void Ans1(int N){
    int Ans = Mxn;
    for(int i = 1; i < N; i++){
        if(N % i == 0){
            Ans = min(Ans, (N * N) / (2 * i * i) * (i * i));
        }
    }
    cout << Ans;
}

void Ans2(int N, int K){
    LL Cnt1 = 0, Cnt2 = 0;
    for(int i = 1, x1, y1, x2, y2; i <= K; i++){
        cin >> x1 >> y1 >> x2 >> y2;
        bool Num = Get(x2, y2, 1);
        if(!Num){
            Cnt1++;
        } else {
            Cnt2++;
        }
    }
    cout << min(N * N / 2 - Cnt2 + Cnt1, N * N / 2 + 1 - Cnt1 + Cnt2);
}

void Ans3(int N, int K){
    int Ans = LONG_MAX;
    vector <int> F;
    vector <pair <int, int>> P(N, {0, 0});
    for(int i = 1; i <= sqrt(N); i++){
        if(N % i == 0){
            F.pb(i);
            if(N / i != i && i > 1){
                F.pb(N / i);
            }
        }
    }
    for(int i = 1, x1, y1, x2, y2; i <= K; i++){
        cin >> x1 >> y1 >> x2 >> y2;
        for(auto i : F){
            if(((x1+i-1)/i+(y1+i-1)/i) % 2){
                P[i].first++;
            } else {
                P[i].second++;
            }
        }
    }
    for(auto i : F){
        Ans = min(Ans, ((N * N) / (2 * i * i)) * (i * i) + (i * i) + P[i].first - P[i].second);
        Ans = min(Ans, ((N * N) / (2 * i * i)) * (i * i) - P[i].first + P[i].second);
    }
    cout << Ans;
}

signed main(){
    Kultivator;
    LL N, K;
    cin >> N >> K;
    if(!K){
        Ans1(N);
    } else if(!Prime(N)){
        Ans2(N, K);
    } else {
        Ans3(N, K);
    }
}

Subtask #1
8.0 / 8.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 364 KB Output is correct
2 Correct 0 ms 364 KB Output is correct
3 Correct 1 ms 364 KB Output is correct
4 Correct 0 ms 364 KB Output is correct
5 Correct 1 ms 364 KB Output is correct
6 Correct 1 ms 364 KB Output is correct
7 Correct 0 ms 364 KB Output is correct
8 Correct 0 ms 364 KB Output is correct

Subtask #2
8.0 / 8.0

# Verdict Execution time Memory Grader output
1 Correct 23 ms 364 KB Output is correct
2 Correct 6 ms 364 KB Output is correct
3 Correct 17 ms 364 KB Output is correct
4 Correct 16 ms 364 KB Output is correct
5 Correct 20 ms 364 KB Output is correct
6 Correct 13 ms 364 KB Output is correct
7 Correct 3 ms 364 KB Output is correct
8 Correct 13 ms 364 KB Output is correct
9 Correct 33 ms 364 KB Output is correct
10 Correct 23 ms 364 KB Output is correct

Subtask #3
15.0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 364 KB Output is correct
2 Correct 1 ms 364 KB Output is correct
3 Correct 1 ms 364 KB Output is correct
4 Correct 1 ms 364 KB Output is correct
5 Correct 1 ms 364 KB Output is correct
6 Correct 1 ms 364 KB Output is correct
7 Correct 1 ms 364 KB Output is correct
8 Correct 1 ms 364 KB Output is correct
9 Correct 1 ms 364 KB Output is correct
10 Correct 1 ms 364 KB Output is correct
11 Correct 1 ms 364 KB Output is correct
12 Correct 1 ms 364 KB Output is correct
13 Correct 1 ms 364 KB Output is correct
14 Correct 1 ms 364 KB Output is correct
15 Correct 1 ms 364 KB Output is correct

Subtask #4
16.0 / 16.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 364 KB Output is correct
2 Correct 1 ms 364 KB Output is correct
3 Correct 1 ms 364 KB Output is correct
4 Correct 1 ms 364 KB Output is correct
5 Correct 1 ms 364 KB Output is correct
6 Correct 1 ms 364 KB Output is correct
7 Correct 1 ms 364 KB Output is correct
8 Correct 1 ms 364 KB Output is correct
9 Correct 1 ms 364 KB Output is correct
10 Correct 1 ms 364 KB Output is correct
11 Correct 1 ms 364 KB Output is correct
12 Correct 1 ms 364 KB Output is correct
13 Correct 1 ms 364 KB Output is correct
14 Correct 1 ms 364 KB Output is correct
15 Correct 1 ms 364 KB Output is correct
16 Correct 11 ms 748 KB Output is correct
17 Correct 27 ms 1644 KB Output is correct
18 Correct 39 ms 1900 KB Output is correct
19 Correct 70 ms 1772 KB Output is correct
20 Correct 78 ms 1928 KB Output is correct
21 Correct 25 ms 1644 KB Output is correct
22 Correct 1 ms 364 KB Output is correct
23 Correct 18 ms 1004 KB Output is correct
24 Correct 36 ms 1772 KB Output is correct
25 Correct 4 ms 492 KB Output is correct
26 Correct 20 ms 1260 KB Output is correct
27 Correct 30 ms 1388 KB Output is correct
28 Correct 39 ms 1928 KB Output is correct
29 Correct 11 ms 876 KB Output is correct
30 Correct 2 ms 364 KB Output is correct

Subtask #5
23.0 / 23.0

# Verdict Execution time Memory Grader output
1 Correct 23 ms 364 KB Output is correct
2 Correct 6 ms 364 KB Output is correct
3 Correct 17 ms 364 KB Output is correct
4 Correct 16 ms 364 KB Output is correct
5 Correct 20 ms 364 KB Output is correct
6 Correct 13 ms 364 KB Output is correct
7 Correct 3 ms 364 KB Output is correct
8 Correct 13 ms 364 KB Output is correct
9 Correct 33 ms 364 KB Output is correct
10 Correct 23 ms 364 KB Output is correct
11 Correct 1 ms 364 KB Output is correct
12 Correct 1 ms 364 KB Output is correct
13 Correct 1 ms 364 KB Output is correct
14 Correct 1 ms 364 KB Output is correct
15 Correct 1 ms 364 KB Output is correct
16 Correct 1 ms 364 KB Output is correct
17 Correct 1 ms 364 KB Output is correct
18 Correct 1 ms 364 KB Output is correct
19 Correct 1 ms 364 KB Output is correct
20 Correct 1 ms 364 KB Output is correct
21 Correct 1 ms 364 KB Output is correct
22 Correct 1 ms 364 KB Output is correct
23 Correct 1 ms 364 KB Output is correct
24 Correct 1 ms 364 KB Output is correct
25 Correct 1 ms 364 KB Output is correct
26 Correct 11 ms 748 KB Output is correct
27 Correct 27 ms 1644 KB Output is correct
28 Correct 39 ms 1900 KB Output is correct
29 Correct 70 ms 1772 KB Output is correct
30 Correct 78 ms 1928 KB Output is correct
31 Correct 25 ms 1644 KB Output is correct
32 Correct 1 ms 364 KB Output is correct
33 Correct 18 ms 1004 KB Output is correct
34 Correct 36 ms 1772 KB Output is correct
35 Correct 4 ms 492 KB Output is correct
36 Correct 20 ms 1260 KB Output is correct
37 Correct 30 ms 1388 KB Output is correct
38 Correct 39 ms 1928 KB Output is correct
39 Correct 11 ms 876 KB Output is correct
40 Correct 2 ms 364 KB Output is correct
41 Correct 65 ms 3820 KB Output is correct
42 Correct 40 ms 4204 KB Output is correct
43 Correct 52 ms 3948 KB Output is correct
44 Correct 39 ms 4076 KB Output is correct
45 Correct 36 ms 2668 KB Output is correct
46 Correct 72 ms 4076 KB Output is correct
47 Correct 32 ms 2412 KB Output is correct
48 Correct 43 ms 3948 KB Output is correct
49 Correct 37 ms 3948 KB Output is correct
50 Correct 238 ms 3948 KB Output is correct
51 Correct 256 ms 3948 KB Output is correct
52 Correct 237 ms 3820 KB Output is correct
53 Correct 255 ms 4096 KB Output is correct
54 Correct 231 ms 3692 KB Output is correct
55 Correct 266 ms 3984 KB Output is correct
56 Correct 228 ms 3820 KB Output is correct

Subtask #6
0 / 30.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 364 KB Output is correct
2 Correct 0 ms 364 KB Output is correct
3 Correct 1 ms 364 KB Output is correct
4 Correct 0 ms 364 KB Output is correct
5 Correct 1 ms 364 KB Output is correct
6 Correct 1 ms 364 KB Output is correct
7 Correct 0 ms 364 KB Output is correct
8 Correct 0 ms 364 KB Output is correct
9 Correct 23 ms 364 KB Output is correct
10 Correct 6 ms 364 KB Output is correct
11 Correct 17 ms 364 KB Output is correct
12 Correct 16 ms 364 KB Output is correct
13 Correct 20 ms 364 KB Output is correct
14 Correct 13 ms 364 KB Output is correct
15 Correct 3 ms 364 KB Output is correct
16 Correct 13 ms 364 KB Output is correct
17 Correct 33 ms 364 KB Output is correct
18 Correct 23 ms 364 KB Output is correct
19 Correct 1 ms 364 KB Output is correct
20 Correct 1 ms 364 KB Output is correct
21 Correct 1 ms 364 KB Output is correct
22 Correct 1 ms 364 KB Output is correct
23 Correct 1 ms 364 KB Output is correct
24 Correct 1 ms 364 KB Output is correct
25 Correct 1 ms 364 KB Output is correct
26 Correct 1 ms 364 KB Output is correct
27 Correct 1 ms 364 KB Output is correct
28 Correct 1 ms 364 KB Output is correct
29 Correct 1 ms 364 KB Output is correct
30 Correct 1 ms 364 KB Output is correct
31 Correct 1 ms 364 KB Output is correct
32 Correct 1 ms 364 KB Output is correct
33 Correct 1 ms 364 KB Output is correct
34 Correct 11 ms 748 KB Output is correct
35 Correct 27 ms 1644 KB Output is correct
36 Correct 39 ms 1900 KB Output is correct
37 Correct 70 ms 1772 KB Output is correct
38 Correct 78 ms 1928 KB Output is correct
39 Correct 25 ms 1644 KB Output is correct
40 Correct 1 ms 364 KB Output is correct
41 Correct 18 ms 1004 KB Output is correct
42 Correct 36 ms 1772 KB Output is correct
43 Correct 4 ms 492 KB Output is correct
44 Correct 20 ms 1260 KB Output is correct
45 Correct 30 ms 1388 KB Output is correct
46 Correct 39 ms 1928 KB Output is correct
47 Correct 11 ms 876 KB Output is correct
48 Correct 2 ms 364 KB Output is correct
49 Correct 65 ms 3820 KB Output is correct
50 Correct 40 ms 4204 KB Output is correct
51 Correct 52 ms 3948 KB Output is correct
52 Correct 39 ms 4076 KB Output is correct
53 Correct 36 ms 2668 KB Output is correct
54 Correct 72 ms 4076 KB Output is correct
55 Correct 32 ms 2412 KB Output is correct
56 Correct 43 ms 3948 KB Output is correct
57 Correct 37 ms 3948 KB Output is correct
58 Correct 238 ms 3948 KB Output is correct
59 Correct 256 ms 3948 KB Output is correct
60 Correct 237 ms 3820 KB Output is correct
61 Correct 255 ms 4096 KB Output is correct
62 Correct 231 ms 3692 KB Output is correct
63 Correct 266 ms 3984 KB Output is correct
64 Correct 228 ms 3820 KB Output is correct
65 Correct 1 ms 364 KB Output is correct
66 Incorrect 1 ms 364 KB Output isn't correct
67 Halted 0 ms 0 KB -