oj.uz

Submission #137925

# Submission time Handle Problem Language Result Execution time Memory
137925 2019-07-28T14:14:41 Z vardan__02 Chessboard (IZhO18_chessboard) C++14
16 / 100
 48 ms 2552 KB 
#include <iostream>
#include <fstream>
#include <algorithm>
#include <cstring>
#include <string>
#include <vector>
#include <cstdio>
#include <queue>
#include <deque>
#include <stack>
#include <cmath>
#include <list>
#include <set>
#include <map>
using namespace std;
typedef long long ll;
#define MP make_pair
#define PB push_back
ll n,k,p,u,ans,color[100005],i,j,qanak[105],v,x[100005],y[100005],p1,p2,q1,q2,ans1,ans2,t;
int main()
{
    ios_base::sync_with_stdio(false);
    cin.tie(0);
    cout.tie(0);
    for(i=2;i<=100000;i++)
    {
        if(!color[i])
        {
            for(j=2*i;j<=100000;j+=i)
                color[j]=1;
        }
    }
    cin>>n>>k;
    if(color[n]==0)
    {
        for(i=1;i<=k;i++)
        {
            cin>>x[i]>>y[i]>>x[i]>>y[i];
            if(x[i]%2==y[i]%2)
                u++;
            else
                v++;
        }
        p=n*n/2+1-u+v;
        ans=n*n/2-v+u;
        cout<<min(ans,p)<<endl;
        return 0;
    }
    for(i=n;i>=2;i--)
    {
        if(!color[i] && n%i==0)
        {
            p2=i;
            break;
        }
    }
    for(i=2;i<=n;i++)
    {
        if(!color[i] && n%i==0)
        {
            p1=i;
            break;
        }
    }
    for(i=1;i<=k;i++)
    cin>>x[i]>>y[i]>>x[i]>>y[i];
    t=n/p1;
    for(i=1;i<=k;i++)
    {
        ll g,h;
        if(x[i]%t==0)
            g=x[i]/t;
        else
            g=x[i]/t+1;
        if(y[i]%t==0)
            h=y[i]/t;
        else
            h=y[i]/t+1;
        if(h%2==g%2)
            u++;
        else
            v++;
    }
    q1=n/p1;
    ans1=p1*p1/2+1;
    ans1=ans1*q1*q1;
    ans1=ans1-u+v;
    ans2=p1*p1/2;
    ans2=ans2*q1*q1;
    ans2=ans2-v+u;
    ans=min(ans1,ans2);
    u=0; v=0;
    t=n/p2;
    for(i=1;i<=k;i++)
    {
        ll g,h;
        if(x[i]%t==0)
            g=x[i]/t;
        else
            g=x[i]/t+1;
        if(y[i]%t==0)
            h=y[i]/t;
        else
            h=y[i]/t+1;
        if(h%2==g%2)
            u++;
        else
            v++;
    }
    q2=n/p2;
    ans1=p2*p2/2+1;
    ans1=ans1*q2*q2;
    ans1=ans1-u+v;
    ans2=p2*p2/2;
    ans2=ans2*q2*q2;
    ans2=ans2-v+u;
    ans=min(ans,ans1);
    ans=min(ans,ans2);
    cout<<ans<<endl;
    return 0;
}

Subtask #1
8.0 / 8.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 1144 KB Output is correct
2 Correct 3 ms 1144 KB Output is correct
3 Correct 3 ms 1144 KB Output is correct
4 Correct 3 ms 1144 KB Output is correct
5 Correct 3 ms 1144 KB Output is correct
6 Correct 3 ms 1148 KB Output is correct
7 Correct 3 ms 1144 KB Output is correct
8 Correct 3 ms 1144 KB Output is correct

Subtask #2
8.0 / 8.0

# Verdict Execution time Memory Grader output
1 Correct 31 ms 2140 KB Output is correct
2 Correct 11 ms 1400 KB Output is correct
3 Correct 21 ms 1784 KB Output is correct
4 Correct 22 ms 1784 KB Output is correct
5 Correct 29 ms 2040 KB Output is correct
6 Correct 19 ms 1656 KB Output is correct
7 Correct 7 ms 1272 KB Output is correct
8 Correct 20 ms 1656 KB Output is correct
9 Correct 48 ms 2552 KB Output is correct
10 Correct 28 ms 1912 KB Output is correct

Subtask #3
0 / 15.0

# Verdict Execution time Memory Grader output
1 Incorrect 4 ms 1144 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #4
0 / 16.0

# Verdict Execution time Memory Grader output
1 Incorrect 4 ms 1144 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #5
0 / 23.0

# Verdict Execution time Memory Grader output
1 Correct 31 ms 2140 KB Output is correct
2 Correct 11 ms 1400 KB Output is correct
3 Correct 21 ms 1784 KB Output is correct
4 Correct 22 ms 1784 KB Output is correct
5 Correct 29 ms 2040 KB Output is correct
6 Correct 19 ms 1656 KB Output is correct
7 Correct 7 ms 1272 KB Output is correct
8 Correct 20 ms 1656 KB Output is correct
9 Correct 48 ms 2552 KB Output is correct
10 Correct 28 ms 1912 KB Output is correct
11 Incorrect 4 ms 1144 KB Output isn't correct
12 Halted 0 ms 0 KB -

Subtask #6
0 / 30.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 1144 KB Output is correct
2 Correct 3 ms 1144 KB Output is correct
3 Correct 3 ms 1144 KB Output is correct
4 Correct 3 ms 1144 KB Output is correct
5 Correct 3 ms 1144 KB Output is correct
6 Correct 3 ms 1148 KB Output is correct
7 Correct 3 ms 1144 KB Output is correct
8 Correct 3 ms 1144 KB Output is correct
9 Correct 31 ms 2140 KB Output is correct
10 Correct 11 ms 1400 KB Output is correct
11 Correct 21 ms 1784 KB Output is correct
12 Correct 22 ms 1784 KB Output is correct
13 Correct 29 ms 2040 KB Output is correct
14 Correct 19 ms 1656 KB Output is correct
15 Correct 7 ms 1272 KB Output is correct
16 Correct 20 ms 1656 KB Output is correct
17 Correct 48 ms 2552 KB Output is correct
18 Correct 28 ms 1912 KB Output is correct
19 Incorrect 4 ms 1144 KB Output isn't correct
20 Halted 0 ms 0 KB -