Submission #993333

#	Time	Username	Problem	Language	Result	Execution time	Memory
993333		simona1230	Red-blue table (IZhO19_stones)	C++17	100 / 100	38 ms	2392 KiB

stones

#include <bits/stdc++.h>

using namespace std;

void speed()
{
    ios_base::sync_with_stdio(false);
    cin.tie(NULL);
    cout.tie(NULL);
}
char c[1024][1024];
int cnt[1024];
void read()
{
    memset(cnt,0,sizeof(cnt));
    int n,m;
    cin>>n>>m;
    bool s=0;
    if(m<n)s=1,swap(n,m);

    for(int i=1;i<=n;i++)
    {
        for(int j=1;j<=m;j++)
        {
            c[i][j]='-';
        }
    }

    int j=1;
    int ans=m;
    for(int i=1;i<=n;i++)
    {
        int curr=m/2+1;
        while(curr)
        {
            if(cnt[j]==n-n/2-1)break;
            cnt[j]++;
            c[i][j]='+';
            curr--;

            j++;
            if(j==m+1)j=1;
        }

        if(curr)break;
        ans++;
    }

    cout<<ans<<endl;
    if(s)
    {
        for(int j=1; j<=m; j++)
        {
            for(int i=1; i<=n; i++)
            {
                if(c[i][j]=='-')cout<<"+";
                else cout<<"-";
            }
            cout<<endl;
        }
    }
    else
    {
        for(int i=1; i<=n; i++)
        {
            for(int j=1; j<=m; j++)
            {
                cout<<c[i][j];
            }
            cout<<endl;
        }
    }
}

int main()
{
    speed();
    int t;
    cin>>t;
    while(t--)
        read();
    return 0;
}

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