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QOJ

IDProblemSubmitterResultTimeMemoryLanguageFile sizeSubmit timeJudge time
#535800#9114. Black or White 2synonymWA 154ms3700kbC++173.2kb2024-08-28 14:58:552024-08-28 14:58:57

Judging History

你现在查看的是最新测评结果

  • [2024-08-28 14:58:57]
  • 评测
  • 测评结果:WA
  • 用时:154ms
  • 内存:3700kb
  • [2024-08-28 14:58:55]
  • 提交

answer

#include "bits/stdc++.h"
using namespace std;
#define int long long
#define all(x) begin(x), end(x)
#define sz(x) (int) (x).size()

const int mxn=2e3;
void check();

int n,m,k,fl,nm;
int g[mxn][mxn];

void solve2() {
	if (k%2) {
		for (int i=0; i<m; i++) {
			if (k==0) break;
			g[0][i] = 1; k--; if (k==0) break;
			g[1][i] = 1; k--; if (k==0) break;
		}
	} else {
		if (k==0) return;
		g[0][m-1] = 1; k--;
		for (int i=0; i<m; i++) {
			if (k==0) break;
			g[0][i] = 1; k--; if (k==0) break;
			g[1][i] = 1; k--; if (k==0) break;
		}
	}
}

void solve3() {
	if (k%3==0 && k) {
		g[0][m-1] = 1; k--;
	}
	int ok = k;
	for (int i=0; k; i++) {
		if (!k) break;
		if (ok%3==1) {
			g[1][i] = 1; k--;
			if (!k) break;
			g[0][i] = 1; k--;
			g[2][i] = 1; k--;
			if (!k) break;
		} else {
			g[0][i] = 1; k--;
			g[2][i] = 1; k--;
			if (!k) break;
			g[1][i] = 1; k--;
			if (!k) break;
		}
		
	}
}

void solvek2() {
	g[0][0] = g[n-1][m-1] = 1;
}

void solven() {
//	swap(n,m); nm = !nm;
	for (int i=0; i<=n; i++) {
		for (int j=0; j<=m; j++) {
			g[i][j] = 0;
		}
	}
	int c = 0;
	while (k >= 2*n) {
		for (int i=0; i<n; i++) {
			g[i][c] = 1; k--;
		}
		c++;
	}
	if (k >= n) {
		for (int i=0; i<n; i+=2) {
			g[i][c] = 1; k--;
		}
	}
	
	if (2*k <= n) {
		for (int i=0; k; i+=2) {
			g[i][m-1] = 1; k--;
		}
		return;
	}
	int fff = 0;
	if (k%3==2) {
		fff = 1; k--;
	}
	int sp = 0;
	if (k%3==1) {
		g[0][m-1] = 1; sp=1; k--;
	}
	for (int i=sp; k; i++) {
		g[i][m-1] = 1; k--;
		if (!k) break;
		if (i%2==sp%2) {
			g[i][m-2] = 1; k--;
		}
	}
	if (fff) {
		for (int i=0; i<n; i++) {
			for (int j=0; j<m; j++) {
				if (g[i][j]) continue;
				int su=0;
				su += g[i+1][j+1]+g[i+1][j]+(j?g[i+1][j-1]:0);
				su += g[i][j+1]+g[i][j+1]+(j?g[i][j-1]:0);
				if (i) su += g[i-1][j+1]+g[i-1][j]+(j?g[i-1][j-1]:0);
				if (!su) {
//					cout<<i<<" "<<j<<" "<<su<<endl;
					fff = 0;
					g[i][j] = 1;
					return;
				}
			}
		}
	}
}

void solve() {
	cin>>n>>m>>k;
//	cout<<n<<" "<<m<<" "<<k<<endl;
	if (2*k > n*m) {
		fl = 1;
		k = n*m-k;
	} else fl = 0;
	if (n>m) {
		nm = 1;
		swap(n,m);
	} else nm = 0;
	
	for (int i=0; i<n; i++) {
		for (int j=0; j<m; j++) g[i][j]=0;
	}
	
	if (n==3 && m==3 && k==4) {
		g[0][0] = g[0][1] = g[0][2] = g[1][1] = 1;
	} else {
	
	if (n==2) {
		solve2();
	} else if (n==3) {
		solve3();
	} else if (k==2) {
		solvek2();
	} else {
		solven();
	}
	}
	if (fl) {
		for (int i=0; i<n; i++) {
			for (int j=0; j<m; j++) {
				g[i][j] = 1-g[i][j];
			}
		}
	}
	if (n==2&&m==2) {}
	else check();
	if (nm) {
		for (int j=0; j<m; j++) {
			for (int i=0; i<n; i++) {
				cout<<g[i][j]<<"";
			}
			cout<<"\n";
		}
	} else {
		for (int i=0; i<n; i++) {
			for (int j=0; j<m; j++) {
				cout<<g[i][j]<<"";
			}
			cout<<"\n";
		}
	}
	cout<<"\n";
}

void check() {
	for (int i=0; i<n-1; i++) {
		for (int j=0; j<m-1; j++) {
			if (g[i][j]+g[i][j+1]+g[i+1][j]+g[i+1][j+1]==2) {
				assert(0);
			}
		}
	}
}

signed main() {
	ios::sync_with_stdio(false); cin.tie(nullptr);
	
	int t; cin>>t;
	for (int i=0; i<t; i++) {
		solve();
	}
	
	return 0;
}

Details

Tip: Click on the bar to expand more detailed information

Test #1:

score: 100
Accepted
time: 0ms
memory: 3624kb

input:

2
2 2 2
2 3 0

output:

11
00

000
000


result:

ok Output is valid. OK.

Test #2:

score: -100
Wrong Answer
time: 154ms
memory: 3700kb

input:

27520
2 2 0
2 2 1
2 2 2
2 2 3
2 2 4
2 3 0
2 3 1
2 3 2
2 3 3
2 3 4
2 3 5
2 3 6
3 2 0
3 2 1
3 2 2
3 2 3
3 2 4
3 2 5
3 2 6
3 3 0
3 3 1
3 3 2
3 3 3
3 3 4
3 3 5
3 3 6
3 3 7
3 3 8
3 3 9
2 4 0
2 4 1
2 4 2
2 4 3
2 4 4
2 4 5
2 4 6
2 4 7
2 4 8
3 4 0
3 4 1
3 4 2
3 4 3
3 4 4
3 4 5
3 4 6
3 4 7
3 4 8
3 4 9
3 4 10...

output:

00
00

10
00

11
00

01
11

11
11

000
000

100
000

101
000

110
100

010
111

011
111

111
111

00
00
00

10
00
00

10
00
10

11
10
00

01
11
01

01
11
11

11
11
11

000
000
000

000
100
000

100
000
100

101
000
100

111
010
000

000
101
111

010
111
011

011
111
011

111
011
111

111
111
111

00...

result:

wrong answer The number of black cell is not K