Submission #684514

#	Time	Username	Problem	Language	Result	Execution time	Memory
684514		Chal1shkan	Red-blue table (IZhO19_stones)	C++14	27 / 100	39 ms	1552 KiB

stones

# include <bits/stdc++.h>

# define pb push_back
# define ff first
# define ss second
# define nl "\n"
# define sz(x) ((int)(x).size())

typedef long long ll;
typedef unsigned long long ull;
typedef long double ld;

const ll maxn = 5e5 + 25;
const ll inf = 1e18 + 0;
const ll mod = 1e9 + 7;
const ll dx[] = {-1, 1, 0, 0};
const ll dy[] = {0, 0, -1, 1};

using namespace std;

int n, m;

int cnt (vector < vector <int> >& a)
{
    int res = 0;
    for (int i = 0; i < n; ++i)
    {
        int cnt[2] = {0};
        for (int j = 0; j < m; ++j)
        {
            cnt[a[i][j]]++;
        }
        if (cnt[1] >= m / 2 + 1)
        {
            res++;
        }
    }
    for (int j = 0; j < m; ++j)
    {
        int cnt[2] = {0};   
        for (int i = 0; i < n; ++i)
        {
            cnt[a[i][j]]++;
        }
        if (cnt[0] >= n / 2 + 1) 
        {
            res++;
        }
    }
    return res;
}

void print (vector < vector <int> > a)
{
    for (int i = 0; i < n; ++i)
    {
        for (int j = 0; j < m; ++j)
        {
            if (a[i][j] == 0) cout << '-';
            else cout << '+';
        }
        cout << nl;
    }
    cout << nl;
}

void ma1n (/* SABR */)
{
    cin >> n >> m;
    if (n >= m)
    {
        vector < vector <int> > a(n, vector <int>(m, 0));
        for (int i = 0; i < n; ++i)
        {
            for (int j = 0; j < m; ++j)
            {
                if (j < m / 2 + 1)
                {
                    a[i][j] = 1;
                }
                else
                {
                    a[i][j] = 0;
                }
            }
        }
        cout << cnt(a) << nl;
        print(a);
    }
    else
    {
        vector < vector <int> > a(n, vector <int>(m, 0));
        for (int i = 0; i < n; ++i)
        {
            for (int j = 0; j < m; ++j)
            {
                if (i < n / 2 + 1)
                {
                    a[i][j] = 0;
                }
                else
                {
                    a[i][j] = 1;
                }
            }
        }
        cout << cnt(a) << nl;
        print(a);
    }
}

int main()
{
    ios::sync_with_stdio(false);
    cin.tie(0); cout.tie(0);
//  freopen("file.in", "r", stdin);
//  freopen("file.out", "w", stdout);
    int ttt = 1;
    cin >> ttt;
    for (int test = 1; test <= ttt; ++test)
    {
//      cout << "Case " << test << ":" << ' ';
        ma1n();
    }
    return 0;
}

• Subtask 1: 17 / 17
• Subtask 2: 10 / 10
• Subtask 3: 0 / 16
• Subtask 4: 0 / 11
• Subtask 5: 0 / 15
• Subtask 6: 0 / 31