oj.uz

Submission #961048

# Submission time Handle Problem Language Result Execution time Memory
961048 2024-04-11T12:46:56 Z pcc Red-blue table (IZhO19_stones) C++17
17 / 100
 501 ms 1472 KB 
#include <bits/stdc++.h>
using namespace std;

#define ll long long
#define pll pair<ll,ll>
#define pii pair<int,int>
#define fs first
#define sc second
#define tlll tuple<ll,ll,ll>

namespace S1{

	int ans[22][22],C[22][22];
	int row[22],col[22];

	void calc(int r,int c){
		int big = 0,cnt = 0;
		for(int i = 0;i<(1<<(r*c));i++){
			for(int j = 0;j<r;j++)row[j] = 0;
			for(int j = 0;j<c;j++)col[j] = 0;
			for(int j = 0;j<r;j++){
				for(int k = 0;k<c;k++){
					if(i&(1<<(j*c+k)))row[j]++,col[k]++;
				}
			}
			int tc = 0;
			for(int j = 0;j<r;j++){
				tc += (row[j]>c-row[j]);
			}
			for(int j = 0;j<c;j++){
				tc += (r-col[j]>col[j]);
			}
			if(tc>cnt)cnt = tc,big = i;
		}
		ans[r][c] = cnt;
		C[r][c] = big;
	}

	void prep(){
		for(int i = 1;i<=5;i++){
			for(int j = 1;i*j<=20;j++)calc(i,j);
		}
		return;
	}

	void solve(int r,int c){
		string s[r];
		for(int i = 0;i<r;i++){
			for(int j = 0;j<c;j++){
				if(C[r][c]&(1<<(i*c+j)))s[i] += '+';
				else s[i] += '-';
			}
		}
		cout<<ans[r][c]<<'\n';
		for(auto &i:s)cout<<i<<'\n';
		return;
	}
}

namespace S4{
	void solve(int r,int c){
		bool f = false;
		if(r>c)f = true,swap(r,c);
		vector<vector<int>> v(r,vector<int> (c,-1));
		for(int i = 0;i<r/2;i++){
			for(int j = 0;j<=c/2;j++)v[i][j] = v[r-1-i][c-1-j] = 1;
		}
		int cnt = 0;
		cout<<r+c-2<<'\n';
		if(f){
			for(int i = 0;i<c;i++){
				for(int j = 0;j<r;j++)cout<<(-v[j][i] == 1?'+':'-');
				cout<<'\n';
			}
		}
		else{
			for(int i = 0;i<r;i++){
				for(int j = 0;j<c;j++)cout<<(v[i][j] == 1?'+':'-');
				cout<<'\n';
			}
		}
		return;
	}
}

int main(){
	ios::sync_with_stdio(0);cin.tie(0);cout.tie(0);
	S1::prep();
	int t;
	cin>>t;
	while(t--){
		int r,c;
		cin>>r>>c;
		if(r<=4&&c<=4)S1::solve(r,c);
		else S4::solve(r,c);
	}
	return 0;
}

Compilation message

stones.cpp: In function 'void S4::solve(int, int)':
stones.cpp:68:7: warning: unused variable 'cnt' [-Wunused-variable]
   68 |   int cnt = 0;
      |       ^~~

Subtask #1
17.0 / 17.0

# Verdict Execution time Memory Grader output
1 Correct 494 ms 432 KB Output is correct
2 Correct 480 ms 428 KB Output is correct

Subtask #2
0 / 10.0

# Verdict Execution time Memory Grader output
1 Incorrect 501 ms 592 KB in the table A+B is not equal to 20
2 Halted 0 ms 0 KB -

Subtask #3
0 / 16.0

# Verdict Execution time Memory Grader output
1 Correct 494 ms 432 KB Output is correct
2 Correct 480 ms 428 KB Output is correct
3 Incorrect 501 ms 592 KB in the table A+B is not equal to 20
4 Halted 0 ms 0 KB -

Subtask #4
0 / 11.0

# Verdict Execution time Memory Grader output
1 Incorrect 498 ms 1456 KB in the table A+B is not equal to 76
2 Halted 0 ms 0 KB -

Subtask #5
0 / 15.0

# Verdict Execution time Memory Grader output
1 Incorrect 501 ms 1472 KB in the table A+B is not equal to 46
2 Halted 0 ms 0 KB -

Subtask #6
0 / 31.0

# Verdict Execution time Memory Grader output
1 Correct 494 ms 432 KB Output is correct
2 Correct 480 ms 428 KB Output is correct
3 Incorrect 501 ms 592 KB in the table A+B is not equal to 20
4 Halted 0 ms 0 KB -