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Submission #342619

# Submission time Handle Problem Language Result Execution time Memory
342619 2021-01-02T13:48:45 Z koketsu Chessboard (IZhO18_chessboard) C++14
8 / 100
 22 ms 512 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);

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){
    int 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--;
            Cnt2++;
        } else {
            Cnt1++;
            Cnt2--;
        }
    }
    cout << min(N * N / 2 - Cnt1, N * N / 2 + 1 - Cnt2);
}

int main(){
    Kultivator;
    int N, K;
    cin >> N >> K;
    if(!K){
        Ans1(N);
    } else if(!Prime(N)){
        Ans2(N, K);
    }
    //cout << Prime(N);
}

Subtask #1
8.0 / 8.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 512 KB Output is correct
2 Correct 0 ms 364 KB Output is correct
3 Correct 0 ms 364 KB Output is correct
4 Correct 0 ms 364 KB Output is correct
5 Correct 0 ms 364 KB Output is correct
6 Correct 1 ms 512 KB Output is correct
7 Correct 1 ms 364 KB Output is correct
8 Correct 1 ms 364 KB Output is correct

Subtask #2
0 / 8.0

# Verdict Execution time Memory Grader output
1 Incorrect 22 ms 364 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #3
0 / 15.0

# Verdict Execution time Memory Grader output
1 Incorrect 0 ms 364 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #4
0 / 16.0

# Verdict Execution time Memory Grader output
1 Incorrect 0 ms 364 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #5
0 / 23.0

# Verdict Execution time Memory Grader output
1 Incorrect 22 ms 364 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #6
0 / 30.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 512 KB Output is correct
2 Correct 0 ms 364 KB Output is correct
3 Correct 0 ms 364 KB Output is correct
4 Correct 0 ms 364 KB Output is correct
5 Correct 0 ms 364 KB Output is correct
6 Correct 1 ms 512 KB Output is correct
7 Correct 1 ms 364 KB Output is correct
8 Correct 1 ms 364 KB Output is correct
9 Incorrect 22 ms 364 KB Output isn't correct
10 Halted 0 ms 0 KB -