Submission #498322

#	Time	Username	Problem	Language	Result	Execution time	Memory
498322		IOI_champion_in_1980	Red-blue table (IZhO19_stones)	C++14	0 / 100	47 ms	1396 KiB

stones

#include <bits/stdc++.h>
#include <math.h>
typedef long long ll;
using namespace std;
ll i, j, t, a, n, m, b, c, d, f, g;
char ch[1010][1010];
void quickSort(int *array, int low, int high)
{
	int i=low;int j=high;int pivot=array[(i + j)/2];int temp;while(i<=j){while(array[i]<pivot)i++;while(array[j]>pivot)j--;
	if(i<=j){temp=array[i];array[i]=array[j];array[j]=temp;i++;j--;}}if(j>low)quickSort(array,low,j);if(i<high)quickSort(array,i,high);
}
int binarySearch(int array[], int x, int low, int high)
{
	while(low<=high){int mid=low+(high-low)/2;if(array[mid]==x)return mid;
	if(array[mid]<x)low=mid+1;else high=mid-1;}return -1;
}
int main()
{
    ios::sync_with_stdio(0);
	cin.tie(0);

	cin>>t;
	for (i=1; i<=t; i++)
	{
		cin>>n>>m;
		if (n<m)
		{
			if (n==1 or n==2)
			{
				cout<<m<<endl;
				for (a=1; a<=n; a++)
				{
					for (b=1; b<=m; b++) cout<<'-';
					cout<<endl;
				}
				continue;
			}
			else
			{
				cout<<m+((n-3)/2)+1<<endl;
				for (a=1; a<=2; a++)
				{
					for (b=1; b<=m; b++) cout<<'-';
					cout<<endl;
				}
				for (a=1; a<=m; a++) cout<<'+';
				cout<<endl;
				for (a=4; a<=n; a++)
				{
					if (a%2==0) for (b=1; b<=m; b++) cout<<'-';
					else for (b=1; b<=m; b++) cout<<'+';
					cout<<endl;
				}
				continue;
			}
		}
		else
		{
			if (m==1 or m==2)
			{
				cout<<n<<endl;
				for (a=1; a<=n; a++)
				{
					for (b=1; b<=m; b++) cout<<'+';
				}
				cout<<endl;
				continue;
			}
			else
			{
				cout<<n+((m-3)/2)+1<<endl;
				for (a=1; a<=2; a++)
				{
					for (b=1; b<=n; b++) ch[b][a]='+';
				}
				for (a=1; a<=n; a++) ch[a][3]='-';
				for (a=4; a<=m; a++)
				{
					if (a%2==0) for (b=1; b<=n; b++) ch[b][a]='+';
					else for (b=1; b<=n; b++) ch[b][a]='-';
				}
				for (a=1; a<=n; a++)
				{
					for (b=1; b<=m; b++) cout<<ch[a][b];
					cout<<endl;
				}
			}
		}
	}
}
/*

*/

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