oj.uz

Submission #414304

# Submission time Handle Problem Language Result Execution time Memory
414304 2021-05-30T10:03:05 Z amoo_safar Cultivation (JOI17_cultivation) C++17
15 / 100
 1086 ms 15044 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 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));
	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]);

	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){
	// vector<int> mk(C + 2, 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;
	// for(auto fi : act){
	// 	pii X = Inter(fi, v);
	// 	X.S = min(X.S, C + 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(auto c : mk)
	// 	if(c == 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;

	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});
	Q.resize(sz);

	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);
	for(auto [c1, v1] : Q)
		cons.pb({{c1, c1}, v1});
	
	sort(all(cons), [&](auto e1, auto e2){
		return e1.S > e2.S;
	});

	int ANS = R + C;
	cons.pb({{{0, 0}, {0, 0}}, 0});
	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);
		// }
		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);

		auto [c1, c2] = fi;
		for(int i = 0; i < C; i++)
			for(int j = 0; j < C; j++)
				if(Sat(c1, i, j) && Sat(c2, i, j))
					ans[i][j] = 1;
		// 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 328 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 316 KB Output is correct
7 Correct 1 ms 332 KB Output is correct
8 Correct 1 ms 204 KB Output is correct
9 Correct 1 ms 324 KB Output is correct
10 Correct 1 ms 204 KB Output is correct
11 Correct 1 ms 320 KB Output is correct
12 Correct 1 ms 204 KB Output is correct
13 Correct 1 ms 320 KB Output is correct
14 Correct 1 ms 204 KB Output is correct
15 Correct 1 ms 324 KB Output is correct
16 Correct 1 ms 204 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 328 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 316 KB Output is correct
7 Correct 1 ms 332 KB Output is correct
8 Correct 1 ms 204 KB Output is correct
9 Correct 1 ms 324 KB Output is correct
10 Correct 1 ms 204 KB Output is correct
11 Correct 1 ms 320 KB Output is correct
12 Correct 1 ms 204 KB Output is correct
13 Correct 1 ms 320 KB Output is correct
14 Correct 1 ms 204 KB Output is correct
15 Correct 1 ms 324 KB Output is correct
16 Correct 1 ms 204 KB Output is correct
17 Correct 2 ms 324 KB Output is correct
18 Correct 23 ms 860 KB Output is correct
19 Correct 11 ms 516 KB Output is correct
20 Correct 13 ms 460 KB Output is correct
21 Correct 38 ms 692 KB Output is correct
22 Correct 149 ms 2116 KB Output is correct
23 Correct 20 ms 616 KB Output is correct
24 Correct 247 ms 2532 KB Output is correct
25 Correct 215 ms 2104 KB Output is correct
26 Correct 1086 ms 14504 KB Output is correct
27 Correct 485 ms 5020 KB Output is correct
28 Correct 290 ms 3820 KB Output is correct
29 Correct 318 ms 4404 KB Output is correct
30 Correct 410 ms 4628 KB Output is correct
31 Correct 520 ms 4868 KB Output is correct
32 Correct 354 ms 4396 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 328 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 316 KB Output is correct
7 Correct 1 ms 332 KB Output is correct
8 Correct 1 ms 204 KB Output is correct
9 Correct 1 ms 324 KB Output is correct
10 Correct 1 ms 204 KB Output is correct
11 Correct 1 ms 320 KB Output is correct
12 Correct 1 ms 204 KB Output is correct
13 Correct 1 ms 320 KB Output is correct
14 Correct 1 ms 204 KB Output is correct
15 Correct 1 ms 324 KB Output is correct
16 Correct 1 ms 204 KB Output is correct
17 Correct 2 ms 324 KB Output is correct
18 Correct 23 ms 860 KB Output is correct
19 Correct 11 ms 516 KB Output is correct
20 Correct 13 ms 460 KB Output is correct
21 Correct 38 ms 692 KB Output is correct
22 Correct 149 ms 2116 KB Output is correct
23 Correct 20 ms 616 KB Output is correct
24 Correct 247 ms 2532 KB Output is correct
25 Correct 215 ms 2104 KB Output is correct
26 Correct 1086 ms 14504 KB Output is correct
27 Correct 485 ms 5020 KB Output is correct
28 Correct 290 ms 3820 KB Output is correct
29 Correct 318 ms 4404 KB Output is correct
30 Correct 410 ms 4628 KB Output is correct
31 Correct 520 ms 4868 KB Output is correct
32 Correct 354 ms 4396 KB Output is correct
33 Runtime error 40 ms 15044 KB Execution killed with signal 11
34 Halted 0 ms 0 KB -

Subtask #4
0 / 30.0

# Verdict Execution time Memory Grader output
1 Runtime error 2 ms 716 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 2 ms 716 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 1 ms 204 KB Output is correct
2 Correct 1 ms 204 KB Output is correct
3 Correct 1 ms 328 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 316 KB Output is correct
7 Correct 1 ms 332 KB Output is correct
8 Correct 1 ms 204 KB Output is correct
9 Correct 1 ms 324 KB Output is correct
10 Correct 1 ms 204 KB Output is correct
11 Correct 1 ms 320 KB Output is correct
12 Correct 1 ms 204 KB Output is correct
13 Correct 1 ms 320 KB Output is correct
14 Correct 1 ms 204 KB Output is correct
15 Correct 1 ms 324 KB Output is correct
16 Correct 1 ms 204 KB Output is correct
17 Correct 2 ms 324 KB Output is correct
18 Correct 23 ms 860 KB Output is correct
19 Correct 11 ms 516 KB Output is correct
20 Correct 13 ms 460 KB Output is correct
21 Correct 38 ms 692 KB Output is correct
22 Correct 149 ms 2116 KB Output is correct
23 Correct 20 ms 616 KB Output is correct
24 Correct 247 ms 2532 KB Output is correct
25 Correct 215 ms 2104 KB Output is correct
26 Correct 1086 ms 14504 KB Output is correct
27 Correct 485 ms 5020 KB Output is correct
28 Correct 290 ms 3820 KB Output is correct
29 Correct 318 ms 4404 KB Output is correct
30 Correct 410 ms 4628 KB Output is correct
31 Correct 520 ms 4868 KB Output is correct
32 Correct 354 ms 4396 KB Output is correct
33 Runtime error 40 ms 15044 KB Execution killed with signal 11
34 Halted 0 ms 0 KB -