oj.uz

Submission #414323

# Submission time Handle Problem Language Result Execution time Memory
414323 2021-05-30T10:33:31 Z amoo_safar Cultivation (JOI17_cultivation) C++17
15 / 100
 546 ms 262148 KB 
// vaziat meshki-ghermeze !
#include <bits/stdc++.h>

#define pb push_back
#define F first
#define S second
#define all(x) x.begin(), x.end()
#define debug(x) cerr << #x << " : " << x << '\n'

using namespace std;

typedef long long ll;
typedef long double ld;
typedef string str;
typedef pair<int, int> pii;

const ll Mod = 1000000007LL;
const int N = 3e2 + 10;
const int Inf = 2'000'000'001;
const ll Log = 30;

int n, R, C;
pii A[N];

// 0, x, y -> C + R < x -> y
// 1, x, y -> C < x -> y
// 2, x, y -> R < x -> y
typedef pii con;
typedef pair<con, int> Query;
vector<Query> Q, TQ, V0, V1;
typedef pair<con, con> iff;
vector< pair<iff, int> > cons;

bool Better(con A, con B){
	if(A.F != B.F)
		return false;
	return A.S >= B.S;
}
bool Better(iff A, iff B){
	return Better(A.F, B.F) && Better(A.S, B.S);
}
bool Sat(con A, int i, int j){
	if(A.F == 0)
		return i + j < A.S;
	if(A.F == 1)
		return i < A.S;
	return j < A.S;
}
void Check(int l, int r){
	int ln = r - l - 1;
	vector<int> V;
	for(int k = 1; k <= n; k++){
		if(l < A[k].F && A[k].F < r)
			V.pb(A[k].S);
	}
	sort(all(V));

	int sz = Q.size();
	vector< pair<con, int> > tmp;
	if(!V.empty() && V[0] > 1)
		tmp.pb({{1, V[0] - 1}, ln});
	if(!V.empty() && V.back() < C)
		tmp.pb({{2, C - V.back()}, ln});
	for(int i = 0; i + 1 < (int) V.size(); i++){
		if(0 < V[i + 1] - V[i] - 1)
			tmp.pb({{0, V[i + 1] - V[i] - 1}, ln});
	}
	if(V.empty())
		tmp.pb({{1, C}, ln});
	sort(all(tmp));
	int cnt = 0;
	for(int i = 0; i < (int) tmp.size(); i++)
		if((i + 1 == (int) tmp.size()) || (!Better(tmp[i + 1].F, tmp[i].F)) )
			Q.pb(tmp[i]), cnt ++;
	// cerr << "!! " << ' ' << cnt << '\n';
	for(int i = sz; i < (int) Q.size(); i++)
		TQ.pb(Q[i]);
	// Q.resize(sz);
}

int ans[N][N]; // C R

pii Inter(pii A, pii B){ return pii(max(A.F, B.F), min(A.S, B.S)); }
pii Inter(con c, int v){
	if(c.F == 0){
		if(v < c.S)
			return pii(0, v + 1);
		return pii(v + 1, 0);
	} else if(c.F == 1){
		return pii(0, c.S);
	}
	return pii((v - c.S) + 1, v + 1);
}
pii Inter(iff c, int v){ return Inter(Inter(c.F, v), Inter(c.S, v)); }

vector<iff> act;
bool Valid(int v){
	// return false;
	vector<int> mk(v + 1, 0);
	// v = min(C - 1 + C - 1, v);
	// for(int i = 0, j = v; i < C; i++, j--)
	// 	if(0 <= j && j < C && ans[i][j] == 0)
	// 		return true;
	// return false;
	vector<iff> tmp = act;
	act.clear();
	for(int i = 0; i < (int) tmp.size(); i++)
		if((i + 1 == (int) tmp.size()) || (!Better(tmp[i + 1], tmp[i])) )
			act.pb(tmp[i]);
	
	for(auto fi : act){
		pii X = Inter(fi, v);
		X.S = min(X.S, v + 1);
		X.F = max(X.F, 0);
		if(X.F >= X.S) continue;
		for(int i = X.F; i < X.S; i++) mk[i] = 1;
	}
	for(int i = 0; i <= v; i++){
		if(i < C && v - i < C && mk[i] == 0)
			return true;
	}
	return false;
}

int main(){
	ios::sync_with_stdio(0); cin.tie(0); cout.tie(0);
	cin >> R >> C >> n;
	for(int i = 1; i <= n; i++){
		cin >> A[i].F >> A[i].S;
	}
	sort(A + 1, A + n + 1);
	// vector<int> V;
	// sort(all(V));
	// for(int i = 1; i <= n; i++) V.pb(A[i].S);
	// int mn_S = 0;
	// for(int i = 0; i < n; i++)
	// 	mn_S = max(mn_S, V[i + 1] - V[i] - 1);
	// Check(0, R + 1);
	// int mx = (A[1].F - 1) + (R - A[n].F);
	Check(0, R + 1);
	for(auto &[cn, sm] : Q)
		sm = Inf;

	// debug(Q.size());

	TQ.clear();
	int sz = Q.size();
	for(int i = 1; i <= n; i++)
		Check(0, A[i].F);
	Q.resize(sz);
	V0 = TQ; TQ.clear();
	for(int i = 1; i <= n; i++)
		Check(A[i].F, R + 1);
	Q.resize(sz);
	V1 = TQ; TQ.clear();
	for(auto [c1, v1] : V0)
		for(auto [c2, v2] : V1)
			cons.pb({{min(c1, c2), max(c1, c2)}, v1 + v2});
	// debug(Q.size());
	Q.resize(sz);
	// debug(Q.size());

	for(int i = 1; i <= n; i++)
		for(int j = i + 1; j <= n; j++)
			if(A[j].F - 1 > A[i].F)
				Check(A[i].F, A[j].F);
	// debug(Q.size());
	for(auto [c1, v1] : Q)
		cons.pb({{c1, c1}, v1});
	
	sort(all(cons), [&](auto e1, auto e2){
		return e1.S > e2.S;
	});
	// debug("X");
	// debug(cons.size());
	int ANS = R + C;
	cons.pb({{{0, 0}, {0, 0}}, 0});
	int la = -1;
	for(auto [fi, v] : cons){
		// debug(v);
		// int CC = C + C;
		// for(int i = 0; i < C; i++){
		// 	for(int j = 0; j < C; j++)
		// 		if(!ans[i][j])
		// 			// CC = min(CC, i + j);
		// 			ANS = min(ANS, i + j + v);
		// }
		if(la == v){
			act.pb(fi);
			continue;
		}
		int L = -1, Rb = C + C - 1;
		int mid;
		while(L + 1 < Rb){
			mid = (L + Rb) >> 1;
			if(Valid(mid)) Rb = mid;
			else L = mid;
		}
		if(Rb != C + C - 1)
			ANS = min(ANS, Rb + v);
		la = v;
		act.pb(fi);
	}
	
	cout << ANS << '\n';
	return 0;
}

Subtask #1
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 204 KB Output is correct
2 Correct 1 ms 204 KB Output is correct
3 Correct 1 ms 204 KB Output is correct
4 Correct 1 ms 204 KB Output is correct
5 Correct 1 ms 332 KB Output is correct
6 Correct 1 ms 204 KB Output is correct
7 Correct 1 ms 204 KB Output is correct
8 Correct 1 ms 320 KB Output is correct
9 Correct 1 ms 204 KB Output is correct
10 Correct 1 ms 204 KB Output is correct
11 Correct 1 ms 204 KB Output is correct
12 Correct 1 ms 204 KB Output is correct
13 Correct 1 ms 204 KB Output is correct
14 Correct 1 ms 204 KB Output is correct
15 Correct 1 ms 204 KB Output is correct
16 Correct 1 ms 332 KB Output is correct

Subtask #2
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 204 KB Output is correct
2 Correct 1 ms 204 KB Output is correct
3 Correct 1 ms 204 KB Output is correct
4 Correct 1 ms 204 KB Output is correct
5 Correct 1 ms 332 KB Output is correct
6 Correct 1 ms 204 KB Output is correct
7 Correct 1 ms 204 KB Output is correct
8 Correct 1 ms 320 KB Output is correct
9 Correct 1 ms 204 KB Output is correct
10 Correct 1 ms 204 KB Output is correct
11 Correct 1 ms 204 KB Output is correct
12 Correct 1 ms 204 KB Output is correct
13 Correct 1 ms 204 KB Output is correct
14 Correct 1 ms 204 KB Output is correct
15 Correct 1 ms 204 KB Output is correct
16 Correct 1 ms 332 KB Output is correct
17 Correct 2 ms 332 KB Output is correct
18 Correct 16 ms 1216 KB Output is correct
19 Correct 7 ms 456 KB Output is correct
20 Correct 6 ms 460 KB Output is correct
21 Correct 32 ms 1156 KB Output is correct
22 Correct 64 ms 2744 KB Output is correct
23 Correct 12 ms 600 KB Output is correct
24 Correct 85 ms 4232 KB Output is correct
25 Correct 101 ms 3892 KB Output is correct
26 Correct 546 ms 19852 KB Output is correct
27 Correct 202 ms 6728 KB Output is correct
28 Correct 108 ms 3876 KB Output is correct
29 Correct 149 ms 4320 KB Output is correct
30 Correct 152 ms 4764 KB Output is correct
31 Correct 198 ms 5780 KB Output is correct
32 Correct 155 ms 4420 KB Output is correct

Subtask #3
0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 204 KB Output is correct
2 Correct 1 ms 204 KB Output is correct
3 Correct 1 ms 204 KB Output is correct
4 Correct 1 ms 204 KB Output is correct
5 Correct 1 ms 332 KB Output is correct
6 Correct 1 ms 204 KB Output is correct
7 Correct 1 ms 204 KB Output is correct
8 Correct 1 ms 320 KB Output is correct
9 Correct 1 ms 204 KB Output is correct
10 Correct 1 ms 204 KB Output is correct
11 Correct 1 ms 204 KB Output is correct
12 Correct 1 ms 204 KB Output is correct
13 Correct 1 ms 204 KB Output is correct
14 Correct 1 ms 204 KB Output is correct
15 Correct 1 ms 204 KB Output is correct
16 Correct 1 ms 332 KB Output is correct
17 Correct 2 ms 332 KB Output is correct
18 Correct 16 ms 1216 KB Output is correct
19 Correct 7 ms 456 KB Output is correct
20 Correct 6 ms 460 KB Output is correct
21 Correct 32 ms 1156 KB Output is correct
22 Correct 64 ms 2744 KB Output is correct
23 Correct 12 ms 600 KB Output is correct
24 Correct 85 ms 4232 KB Output is correct
25 Correct 101 ms 3892 KB Output is correct
26 Correct 546 ms 19852 KB Output is correct
27 Correct 202 ms 6728 KB Output is correct
28 Correct 108 ms 3876 KB Output is correct
29 Correct 149 ms 4320 KB Output is correct
30 Correct 152 ms 4764 KB Output is correct
31 Correct 198 ms 5780 KB Output is correct
32 Correct 155 ms 4420 KB Output is correct
33 Runtime error 151 ms 262148 KB Execution killed with signal 9
34 Halted 0 ms 0 KB -

Subtask #4
0 / 30.0

# Verdict Execution time Memory Grader output
1 Runtime error 113 ms 262148 KB Execution killed with signal 9
2 Halted 0 ms 0 KB -

Subtask #5
0 / 20.0

# Verdict Execution time Memory Grader output
1 Runtime error 113 ms 262148 KB Execution killed with signal 9
2 Halted 0 ms 0 KB -

Subtask #6
0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 204 KB Output is correct
2 Correct 1 ms 204 KB Output is correct
3 Correct 1 ms 204 KB Output is correct
4 Correct 1 ms 204 KB Output is correct
5 Correct 1 ms 332 KB Output is correct
6 Correct 1 ms 204 KB Output is correct
7 Correct 1 ms 204 KB Output is correct
8 Correct 1 ms 320 KB Output is correct
9 Correct 1 ms 204 KB Output is correct
10 Correct 1 ms 204 KB Output is correct
11 Correct 1 ms 204 KB Output is correct
12 Correct 1 ms 204 KB Output is correct
13 Correct 1 ms 204 KB Output is correct
14 Correct 1 ms 204 KB Output is correct
15 Correct 1 ms 204 KB Output is correct
16 Correct 1 ms 332 KB Output is correct
17 Correct 2 ms 332 KB Output is correct
18 Correct 16 ms 1216 KB Output is correct
19 Correct 7 ms 456 KB Output is correct
20 Correct 6 ms 460 KB Output is correct
21 Correct 32 ms 1156 KB Output is correct
22 Correct 64 ms 2744 KB Output is correct
23 Correct 12 ms 600 KB Output is correct
24 Correct 85 ms 4232 KB Output is correct
25 Correct 101 ms 3892 KB Output is correct
26 Correct 546 ms 19852 KB Output is correct
27 Correct 202 ms 6728 KB Output is correct
28 Correct 108 ms 3876 KB Output is correct
29 Correct 149 ms 4320 KB Output is correct
30 Correct 152 ms 4764 KB Output is correct
31 Correct 198 ms 5780 KB Output is correct
32 Correct 155 ms 4420 KB Output is correct
33 Runtime error 151 ms 262148 KB Execution killed with signal 9
34 Halted 0 ms 0 KB -