oj.uz

답안 #259785

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
259785 2020-08-08T14:33:20 Z minhcool Cultivation (JOI17_cultivation) C++17
0 / 100
 3 ms 416 KB 
#include<bits/stdc++.h>
using namespace std;

#define int short int
#define fi first
#define se second
#define pb push_back
#define ins insert
#define er erase

typedef pair<int, int> ii;
typedef pair<ii, int> iii;
typedef pair<ii, ii> iiii;

int n, r, c, s[305], e[305], pref[45][45], ans = 10005;

bool ck(int up, int left, int down, int right){
	for(int i = 1; i <= r; i++){
		for(int j = 1; j <= c; j++) pref[i][j] = 0;
	}
	for(int i = 1; i <= n; i++){
		pref[max(1, s[i] - up)][max(1, e[i] - left)]++;
		pref[min(r + 1, s[i] + down + 1)][max(1, e[i] - left)]--;
		pref[max(1, s[i] - up)][min(c + 1, e[i] + right + 1)]--;
		pref[min(r + 1, s[i] + down + 1)][min(c + 1, e[i] + right + 1)]++;
		//cout << max(1, s[i] - up) << " " << max(1, e[i] - left) << " " << min(r + 1, s[i] + down + 1) << " " << min(c + 1, e[i] + right) << "\n";
	}
	for(int i = 1; i <= r; i++){
		for(int j = 1; j <= c; j++) pref[i][j] += pref[i][j - 1];
	}
	for(int i = 1; i <= r; i++){
		for(int j = 1; j <= c; j++){
			pref[i][j] += pref[i - 1][j];
			if(!pref[i][j]) return 0;
		}
	}
	return 1;
}

int mini(int a, int b){
	return ((a < b) ? a : b);
}

signed main(){
	freopen("cultivation.inp", "r", stdin);
	freopen("cultivation.out", "w", stdout);
	ios_base::sync_with_stdio(0);
	cin >> r >> c >> n;
	for(int i = 1; i <= n; i++) cin >> s[i] >> e[i];
	//cout << ck(0, 1, 2, 2) << "\n";
	for(int i = 0; i < r; i++){
		for(int j = 0; j < c; j++){
			int itr = 2 * c - j - 1, temp = i + j - 1;
			for(int k = 0; k <= (2 * r - 1 - i); k++){
				while(itr >= 0 && ck(i, j, k, itr)) --itr;
				++itr;
				++temp;
				//cout << i << " " << j << " " << k << " " << itr << " " << temp + itr << "\n";
				if(ck(i, j, k, itr)) ans = mini(ans, temp + itr);
			}
		}
	}
	cout << ans;
}

Compilation message

cultivation.cpp: In function 'int main()':
cultivation.cpp:45:9: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result]
  freopen("cultivation.inp", "r", stdin);
  ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
cultivation.cpp:46:9: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result]
  freopen("cultivation.out", "w", stdout);
  ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

Subtask #1
0 / 5.0

# 결과 실행 시간 메모리 Grader output
1 Incorrect 2 ms 384 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #2
0 / 10.0

# 결과 실행 시간 메모리 Grader output
1 Incorrect 2 ms 384 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #3
0 / 15.0

# 결과 실행 시간 메모리 Grader output
1 Incorrect 2 ms 384 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #4
0 / 30.0

# 결과 실행 시간 메모리 Grader output
1 Incorrect 3 ms 416 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #5
0 / 20.0

# 결과 실행 시간 메모리 Grader output
1 Incorrect 3 ms 416 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #6
0 / 20.0

# 결과 실행 시간 메모리 Grader output
1 Incorrect 2 ms 384 KB Output isn't correct
2 Halted 0 ms 0 KB -