oj.uz

Submission #1071179

# Submission time Handle Problem Language Result Execution time Memory
1071179 2024-08-23T05:38:08 Z sleepntsheep Cultivation (JOI17_cultivation) C++17
5 / 100
 297 ms 424 KB 
#pragma GCC optimize("O3,unroll-loops")
#include<cstring>
#include <cstdio>

#include <algorithm>
using namespace std;

int C,z=1e9,R, n, x[300], y[300], c[41][41];

int Check(int l, int u, int r, int d) {
	memset(c,0,sizeof c);
	for (int i = 0; i < n; ++i) {
		++c[max(0, x[i]-u)][max(0, y[i]-l)];
		--c[max(0, x[i]-u)][min(40,y[i]+r+1)];
		--c[min(40,x[i]+d+1)][max(0, y[i]-l)];
		++c[min(40,x[i]+d+1)][min(40,y[i]+r+1)];
	}
	for(int i=1;i<R;++i)c[i][0]+=c[i-1][0];
	for(int j=1;j<C;++j)c[0][j]+=c[0][j-1];
	for(int i=1;i<R;++i)for(int j=1;j<C;++j)c[i][j]+=c[i-1][j]+c[i][j-1]-c[i-1][j-1];
	for(int i=0;i<R;++i)for(int j=0;j<C;++j)if(!c[i][j])return 0;
	return 1;
}

int main() {
	scanf("%d%d%d", &R, &C, &n);
	for (int i = 0; i < n; ++i) scanf("%d%d", x + i, y + i), --x[i], --y[i];

	for(int l=0;l<=40;++l)for(int r=0;r<=40-l;++r){
		for(int u=0;u<=40;++u){
			int lb=0,ub=39;
			while(lb<=ub){
				int md=lb+(ub-lb)/2;
				if(Check(l,u,r,md))ub=md-1,z=min(z,l+u+r+md);
				else lb=md+1;
			}
		}
	}
	printf("%d",z);
}

Compilation message

cultivation.cpp: In function 'int main()':
cultivation.cpp:26:7: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   26 |  scanf("%d%d%d", &R, &C, &n);
      |  ~~~~~^~~~~~~~~~~~~~~~~~~~~~
cultivation.cpp:27:35: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   27 |  for (int i = 0; i < n; ++i) scanf("%d%d", x + i, y + i), --x[i], --y[i];
      |                              ~~~~~^~~~~~~~~~~~~~~~~~~~~~

Subtask #1
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 20 ms 344 KB Output is correct
2 Correct 19 ms 344 KB Output is correct
3 Correct 21 ms 344 KB Output is correct
4 Correct 21 ms 344 KB Output is correct
5 Correct 35 ms 348 KB Output is correct
6 Correct 22 ms 348 KB Output is correct
7 Correct 24 ms 344 KB Output is correct
8 Correct 30 ms 344 KB Output is correct
9 Correct 23 ms 396 KB Output is correct
10 Correct 23 ms 348 KB Output is correct
11 Correct 20 ms 416 KB Output is correct
12 Correct 22 ms 348 KB Output is correct
13 Correct 22 ms 424 KB Output is correct
14 Correct 21 ms 344 KB Output is correct
15 Correct 24 ms 348 KB Output is correct
16 Correct 23 ms 348 KB Output is correct

Subtask #2
0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 20 ms 344 KB Output is correct
2 Correct 19 ms 344 KB Output is correct
3 Correct 21 ms 344 KB Output is correct
4 Correct 21 ms 344 KB Output is correct
5 Correct 35 ms 348 KB Output is correct
6 Correct 22 ms 348 KB Output is correct
7 Correct 24 ms 344 KB Output is correct
8 Correct 30 ms 344 KB Output is correct
9 Correct 23 ms 396 KB Output is correct
10 Correct 23 ms 348 KB Output is correct
11 Correct 20 ms 416 KB Output is correct
12 Correct 22 ms 348 KB Output is correct
13 Correct 22 ms 424 KB Output is correct
14 Correct 21 ms 344 KB Output is correct
15 Correct 24 ms 348 KB Output is correct
16 Correct 23 ms 348 KB Output is correct
17 Correct 69 ms 404 KB Output is correct
18 Correct 161 ms 348 KB Output is correct
19 Correct 297 ms 400 KB Output is correct
20 Correct 95 ms 396 KB Output is correct
21 Incorrect 250 ms 400 KB Output isn't correct
22 Halted 0 ms 0 KB -

Subtask #3
0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 20 ms 344 KB Output is correct
2 Correct 19 ms 344 KB Output is correct
3 Correct 21 ms 344 KB Output is correct
4 Correct 21 ms 344 KB Output is correct
5 Correct 35 ms 348 KB Output is correct
6 Correct 22 ms 348 KB Output is correct
7 Correct 24 ms 344 KB Output is correct
8 Correct 30 ms 344 KB Output is correct
9 Correct 23 ms 396 KB Output is correct
10 Correct 23 ms 348 KB Output is correct
11 Correct 20 ms 416 KB Output is correct
12 Correct 22 ms 348 KB Output is correct
13 Correct 22 ms 424 KB Output is correct
14 Correct 21 ms 344 KB Output is correct
15 Correct 24 ms 348 KB Output is correct
16 Correct 23 ms 348 KB Output is correct
17 Correct 69 ms 404 KB Output is correct
18 Correct 161 ms 348 KB Output is correct
19 Correct 297 ms 400 KB Output is correct
20 Correct 95 ms 396 KB Output is correct
21 Incorrect 250 ms 400 KB Output isn't correct
22 Halted 0 ms 0 KB -

Subtask #4
0 / 30.0

# Verdict Execution time Memory Grader output
1 Runtime error 0 ms 348 KB Execution killed with signal 11
2 Halted 0 ms 0 KB -

Subtask #5
0 / 20.0

# Verdict Execution time Memory Grader output
1 Runtime error 0 ms 348 KB Execution killed with signal 11
2 Halted 0 ms 0 KB -

Subtask #6
0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 20 ms 344 KB Output is correct
2 Correct 19 ms 344 KB Output is correct
3 Correct 21 ms 344 KB Output is correct
4 Correct 21 ms 344 KB Output is correct
5 Correct 35 ms 348 KB Output is correct
6 Correct 22 ms 348 KB Output is correct
7 Correct 24 ms 344 KB Output is correct
8 Correct 30 ms 344 KB Output is correct
9 Correct 23 ms 396 KB Output is correct
10 Correct 23 ms 348 KB Output is correct
11 Correct 20 ms 416 KB Output is correct
12 Correct 22 ms 348 KB Output is correct
13 Correct 22 ms 424 KB Output is correct
14 Correct 21 ms 344 KB Output is correct
15 Correct 24 ms 348 KB Output is correct
16 Correct 23 ms 348 KB Output is correct
17 Correct 69 ms 404 KB Output is correct
18 Correct 161 ms 348 KB Output is correct
19 Correct 297 ms 400 KB Output is correct
20 Correct 95 ms 396 KB Output is correct
21 Incorrect 250 ms 400 KB Output isn't correct
22 Halted 0 ms 0 KB -