답안 #414400

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
414400	2021-05-30T11:57:12 Z	amoo_safar	Cultivation (JOI17_cultivation)	C++17	15 / 100	2000 ms	57900 KB

cultivation

// 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'
#define int ll
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;

void Uni(){
	vector<iff> tmp = act;
	act.clear();
	sort(all(tmp),[&](auto e1, auto e2){
		if(e1.F.F != e2.F.F)
			return e1.F.F < e2.F.F;
		if(e1.S.F != e2.S.F)
			return e1.S.F < e2.S.F;
		return pii(e1.F.S, e1.S.S) < pii(e2.F.S, e2.S.S);
	});

	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]);

}
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;
	
	pii seg = pii(0, C);
	if(v < C)
		seg = pii(0, v + 1);
	else
		seg = pii(v - (C - 1), C);
	// cerr << "!! " << v << ' ' << seg.F << ' ' << seg.S << '\n';

	vector<pii> Al;
	for(auto fi : act){
		pii X = Inter(fi, v);
		X = Inter(X, seg);
		// X.S = min(X.S, v + 1);
		// X.F = max(X.F, 0);
		if(X.F >= X.S) continue;
		Al.pb(X);
		// for(int i = X.F; i < X.S; i++) mk[i] = 1;
	}
	sort(all(Al));
	int nw = seg.F;
	for(auto [l, r] : Al){
		if(nw < l)
			return true;
		nw = max(nw, r);
	}
	if(nw != seg.S)
		return true;
	return false;
	// for(int i = 0; i <= v; i++){
	// 	if(i < C && v - i < C && mk[i] == 0)
	// 		return true;
	// }
	// return false;
}

int32_t 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());
	ll 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;
		}
		la = v;
		if(v == Inf){
			act.pb(fi);
			continue;
		}
		// Uni();
		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, 0ll + Rb + v);
		// la = v;
		act.pb(fi);
	}
	// debug(ANS);
	cout << ANS << '\n';
	return 0;
}

Subtask #1

5.0 / 5.0

#	결과	실행 시간	메모리	Grader output
1	Correct	1 ms	204 KB	Output is correct
2	Correct	1 ms	324 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	204 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	332 KB	Output is correct
13	Correct	1 ms	332 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	204 KB	Output is correct

Subtask #2

10.0 / 10.0

#	결과	실행 시간	메모리	Grader output
1	Correct	1 ms	204 KB	Output is correct
2	Correct	1 ms	324 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	204 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	332 KB	Output is correct
13	Correct	1 ms	332 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	204 KB	Output is correct
17	Correct	3 ms	460 KB	Output is correct
18	Correct	32 ms	1980 KB	Output is correct
19	Correct	12 ms	688 KB	Output is correct
20	Correct	6 ms	672 KB	Output is correct
21	Correct	42 ms	1720 KB	Output is correct
22	Correct	120 ms	5584 KB	Output is correct
23	Correct	14 ms	980 KB	Output is correct
24	Correct	158 ms	8076 KB	Output is correct
25	Correct	180 ms	7200 KB	Output is correct
26	Correct	910 ms	41388 KB	Output is correct
27	Correct	299 ms	14352 KB	Output is correct
28	Correct	237 ms	11236 KB	Output is correct
29	Correct	190 ms	10960 KB	Output is correct
30	Correct	229 ms	12188 KB	Output is correct
31	Correct	346 ms	15072 KB	Output is correct
32	Correct	200 ms	11184 KB	Output is correct

Subtask #3

0 / 15.0

#	결과	실행 시간	메모리	Grader output
1	Correct	1 ms	204 KB	Output is correct
2	Correct	1 ms	324 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	204 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	332 KB	Output is correct
13	Correct	1 ms	332 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	204 KB	Output is correct
17	Correct	3 ms	460 KB	Output is correct
18	Correct	32 ms	1980 KB	Output is correct
19	Correct	12 ms	688 KB	Output is correct
20	Correct	6 ms	672 KB	Output is correct
21	Correct	42 ms	1720 KB	Output is correct
22	Correct	120 ms	5584 KB	Output is correct
23	Correct	14 ms	980 KB	Output is correct
24	Correct	158 ms	8076 KB	Output is correct
25	Correct	180 ms	7200 KB	Output is correct
26	Correct	910 ms	41388 KB	Output is correct
27	Correct	299 ms	14352 KB	Output is correct
28	Correct	237 ms	11236 KB	Output is correct
29	Correct	190 ms	10960 KB	Output is correct
30	Correct	229 ms	12188 KB	Output is correct
31	Correct	346 ms	15072 KB	Output is correct
32	Correct	200 ms	11184 KB	Output is correct
33	Correct	545 ms	42108 KB	Output is correct
34	Execution timed out	2090 ms	57900 KB	Time limit exceeded
35	Halted	0 ms	0 KB	-

Subtask #4

0 / 30.0

#	결과	실행 시간	메모리	Grader output
1	Correct	487 ms	788 KB	Output is correct
2	Execution timed out	2083 ms	1016 KB	Time limit exceeded
3	Halted	0 ms	0 KB	-

Subtask #5

0 / 20.0

#	결과	실행 시간	메모리	Grader output
1	Correct	487 ms	788 KB	Output is correct
2	Execution timed out	2083 ms	1016 KB	Time limit exceeded
3	Halted	0 ms	0 KB	-

Subtask #6

0 / 20.0

#	결과	실행 시간	메모리	Grader output
1	Correct	1 ms	204 KB	Output is correct
2	Correct	1 ms	324 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	204 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	332 KB	Output is correct
13	Correct	1 ms	332 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	204 KB	Output is correct
17	Correct	3 ms	460 KB	Output is correct
18	Correct	32 ms	1980 KB	Output is correct
19	Correct	12 ms	688 KB	Output is correct
20	Correct	6 ms	672 KB	Output is correct
21	Correct	42 ms	1720 KB	Output is correct
22	Correct	120 ms	5584 KB	Output is correct
23	Correct	14 ms	980 KB	Output is correct
24	Correct	158 ms	8076 KB	Output is correct
25	Correct	180 ms	7200 KB	Output is correct
26	Correct	910 ms	41388 KB	Output is correct
27	Correct	299 ms	14352 KB	Output is correct
28	Correct	237 ms	11236 KB	Output is correct
29	Correct	190 ms	10960 KB	Output is correct
30	Correct	229 ms	12188 KB	Output is correct
31	Correct	346 ms	15072 KB	Output is correct
32	Correct	200 ms	11184 KB	Output is correct
33	Correct	545 ms	42108 KB	Output is correct
34	Execution timed out	2090 ms	57900 KB	Time limit exceeded
35	Halted	0 ms	0 KB	-