oj.uz

Submission #213258

# Submission time Handle Problem Language Result Execution time Memory
213258 2020-03-25T11:38:32 Z dorijanlendvaj Cultivation (JOI17_cultivation) C++14
15 / 100
 2000 ms 2816 KB 
//DUEL
#include <bits/stdc++.h>
#include <ext/pb_ds/assoc_container.hpp>
#define x first
#define y second
#define pii pair<int,int>
#define pb push_back
#define eb emplace_back
#pragma GCC optimize("unroll-loops")
#define shandom_ruffle(a, b) shuffle(a, b, rng)
#define vi vector<int>
#define vl vector<ll>
#define popcnt __builtin_popcount
#define popcntll __builtin_popcountll
#define all(a) begin(a),end(a)

using namespace std;
using namespace __gnu_pbds;

using ll=long long;
using ull=unsigned long long;
using ld=long double;
int MOD=1000000007;
int MOD2=998244353;
vector<int> bases;
const ll LLINF=1ll<<60;
const char en='\n';

mt19937 rng(chrono::steady_clock::now().time_since_epoch().count());
void yes() {cout<<"YES"<<en; exit(0);}
void no() {cout<<"NO"<<en; exit(0);}
inline int rund() {int x576363482791fuweh=rng();return abs(x576363482791fuweh)%RAND_MAX;}
template<class T>
void prVec(vector<T> w,bool fl=false)
{
	cout<<w.size()<<en;
	for (int i=0;i<int(w.size())-1;++i) cout<<w[i]<<' ';
	if (w.size()) cout<<w[w.size()-1]<<en;
	if (fl) cout<<flush;
}

void M998()
{
	swap(MOD,MOD2);
}

ll raand()
{
	ll a=rund();
	a*=RAND_MAX;
	a+=rund();
    return a;
}

#define rand raand

ll raaand()
{
	return raand()*(MOD-7)+raand();
}

string to_upper(string a)
{
	for (int i=0;i<(int)a.size();++i) if (a[i]>='a' && a[i]<='z') a[i]-='a'-'A';
	return a;
}

string to_lower(string a)
{
	for (int i=0;i<(int)a.size();++i) if (a[i]>='A' && a[i]<='Z') a[i]+='a'-'A';
	return a;
}

ll sti(string a,int base=10)
{
	ll k=0;
	for (int i=0;i<(int)a.size();++i)
	{
		k*=base;
		k+=a[i]-'0';
	}
	return k;
}

template<class T>
void eras(vector<T>& a,T b)
{
	a.erase(find(a.begin(),a.end(),b));
}

string its(ll k,int base=10)
{
	if (k==0) return "0";
	string a;
	while (k)
	{
		a.push_back((k%base)+'0');
		k/=base;
	}
	reverse(a.begin(),a.end());
	return a;
}

ll min(ll a,int b)
{
	if (a<b) return a;
	return b;
}

ll min(int a,ll b)
{
	if (a<b) return a;
	return b;
}

ll max(ll a,int b)
{
	if (a>b) return a;
	return b;
}

ll max(int a,ll b)
{
	if (a>b) return a;
	return b;
}

ll gcd(ll a,ll b)
{
	if (b==0) return a;
	return gcd(b,a%b);
}

ll lcm(ll a,ll b)
{
	return a/gcd(a,b)*b;
}

template<class T,class K>
pair<T,K> mp(T a,K b)
{
	return make_pair(a,b);
}

inline int mult(ll a,ll b)
{
	return (a*b)%MOD;
}

inline int pot(int n,int k)
{
	if (k==0) return 1;
	ll a=pot(n,k/2);
	a=mult(a,a);
	if (k%2) return mult(a,n);
	else return a;
}

int divide(int a,int b)
{
	return mult(a,pot(b,MOD-2));
}

inline int sub(int a,int b)
{
	if (a-b>=0) return a-b;
	return a-b+MOD;
}

inline int add(int a,int b)
{
	if (a+b>=MOD) return a+b-MOD;
	return a+b;
}

bool prime(ll a)
{
	if (a==1) return 0;
	for (int i=2;i<=round(sqrt(a));++i)
	{
		if (a%i==0) return 0;
	}
	return 1;
}

const int N=300010;
int n,m,k;
int x[N],y[N];
vi a,b;

int main()
{
	ios_base::sync_with_stdio(false);
	cin.tie(0);
	for (int i=0;i<10;++i) bases.push_back(rand()%(MOD-13893829*2)+13893829);
	cin>>n>>m>>k;
	for (int i=0;i<k;++i)
	{
		cin>>x[i]>>y[i];
		a.pb(x[i]);
		b.pb(y[i]);
	}
	a.pb(0);
	a.pb(n+1);
	b.pb(0);
	b.pb(m+1);
	sort(all(a));
	sort(all(b));
	int mu=a[1]-1,md=n-a[a.size()-2],mud=0;
	for (int i=1;i<a.size();++i) mud=max(mud,a[i]-a[i-1]-1);
	int ml=b[1]-1,mr=m-b[b.size()-2],mlr=0;
	for (int i=1;i<b.size();++i) mlr=max(mlr,b[i]-b[i-1]-1);
	set<int> d1,d2;
	for (int i=0;i<a.size();++i) for (int j=i;j<a.size();++j) d1.insert(max(0,a[j]-a[i]-1));
	for (int i=0;i<b.size();++i) for (int j=i;j<b.size();++j) d2.insert(max(0,b[j]-b[i]-1));
	vi r1(all(d1)),r2(all(d2));
	set<int> a1,b1;
	a1.insert(1);
	a1.insert(n);
	b1.insert(1);
	b1.insert(m);
	for (auto u: a) if (u!=0 && u!=n+1) a1.insert(u);
	for (auto u: b) if (u!=0 && u!=m+1) b1.insert(u);
	ll ans=MOD*4ll;
	for (auto u: r1) for (auto d: r1) if (u>=mu && d>=md && u+d>=mud && u+d<=ans)
	{
		vi mil,mir;
		int mlr1=mlr;
		set<int> sy;
		for (int y1: b1)
		{
			int rr=MOD,rl=MOD;
			for (int i=0;i<k;++i) if (x[i]-1<=u)
			{
				if (y[i]<=y1) rr=min(rr,y1-y[i]);
				if (y[i]>=y1) rl=min(rl,y[i]-y1);
			}
			mil.pb(rl);
			mir.pb(rr);
		}
		for (int y1: b1)
		{
			int rr=MOD,rl=MOD;
			for (int i=0;i<k;++i) if (n-x[i]<=d)
			{
				if (y[i]<=y1) rr=min(rr,y1-y[i]);
				if (y[i]>=y1) rl=min(rl,y[i]-y1);
			}
			mil.pb(rl);
			mir.pb(rr);
		}
		for (int x1: a1)
		{
			int rr=MOD,rl=MOD;
			for (int i=0;i<k;++i)
			{
				bool ok=0;
				if (x[i]<=x1 && x1-x[i]<=d) ok=1;
				if (x[i]>=x1 && x[i]-x1<=u) ok=1;
				if (ok) rl=min(rl,y[i]-1);
			}
			mil.pb(rl);
			mir.pb(rr);
		}
		for (int x1: a1)
		{
			int rr=MOD,rl=MOD;
			for (int i=0;i<k;++i)
			{
				bool ok=0;
				if (x[i]<=x1 && x1-x[i]<=d) ok=1;
				if (x[i]>=x1 && x[i]-x1<=u) ok=1;
				if (ok) rr=min(rr,m-y[i]),sy.insert(y[i]);
			}
			int la=0;
			for (int y1: sy)
			{
				mlr1=max(mlr1,y1-la-1);
				la=y1;
			}
			sy.clear();
			mil.pb(rl);
			mir.pb(rr);
		}
		for (int x2: a1)
		{
			int x1=x2-u-1;
			if (x1<=1) continue;
			int rr=MOD,rl=MOD;
			for (int i=0;i<k;++i)
			{
				bool ok=0;
				if (x[i]<=x1 && x1-x[i]<=d) ok=1;
				if (x[i]>=x1 && x[i]-x1<=u) ok=1;
				if (ok) rl=min(rl,y[i]-1);
			}
			mil.pb(rl);
			mir.pb(rr);
		}
		for (int x2: a1)
		{
			int x1=x2-u-1;
			if (x1<=1) continue;
			int rr=MOD,rl=MOD;
			for (int i=0;i<k;++i)
			{
				bool ok=0;
				if (x[i]<=x1 && x1-x[i]<=d) ok=1;
				if (x[i]>=x1 && x[i]-x1<=u) ok=1;
				if (ok) rr=min(rr,m-y[i]),sy.insert(y[i]);
			}
			int la=0;
			for (int y1: sy)
			{
				mlr1=max(mlr1,y1-la-1);
				la=y1;
			}
			sy.clear();
			mil.pb(rl);
			mir.pb(rr);
		}
		for (int x2: a1)
		{
			int x1=x2+d+1;
			if (x1>=n) continue;
			int rr=MOD,rl=MOD;
			for (int i=0;i<k;++i)
			{
				bool ok=0;
				if (x[i]<=x1 && x1-x[i]<=d) ok=1;
				if (x[i]>=x1 && x[i]-x1<=u) ok=1;
				if (ok) rl=min(rl,y[i]-1),sy.insert(y[i]);
			}
			int la=0;
			for (int y1: sy)
			{
				mlr1=max(mlr1,y1-la-1);
				la=y1;
			}
			sy.clear();
			mil.pb(rl);
			mir.pb(rr);
		}
		for (int x2: a1)
		{
			int x1=x2+d+1;
			if (x1>=n) continue;
			int rr=MOD,rl=MOD;
			for (int i=0;i<k;++i)
			{
				bool ok=0;
				if (x[i]<=x1 && x1-x[i]<=d) ok=1;
				if (x[i]>=x1 && x[i]-x1<=u) ok=1;
				if (ok) rr=min(rr,m-y[i]);
			}
			mil.pb(rl);
			mir.pb(rr);
		}
		/*cout<<u<<' '<<d<<en;
		for (int i=0;i<mil.size();++i) cout<<mil[i]<<' '<<mir[i]<<en;*/
		for (ll l: mil) if (l>=ml)
		{
			ll r=0;
			for (int i=0;i<mir.size();++i) if (mil[i]>l) r=max(r,mir[i]);
			ans=min(ans,max(mlr1,l+max(r,mr))+u+d);
		}
		//cout<<ans<<en<<en<<en;
	}
	/*for (auto u: r1) for (auto ud: r1) if (u>=mu && ud-u>=md && ud>=mud && ud<=ans)
	{
		int d=ud-u;
		vi mil,mir;
		int mlr1=mlr;
		set<int> sy;
		for (int y1: b1)
		{
			int rr=MOD,rl=MOD;
			for (int i=0;i<k;++i) if (x[i]-1<=u)
			{
				if (y[i]<=y1) rr=min(rr,y1-y[i]);
				if (y[i]>=y1) rl=min(rl,y[i]-y1);
			}
			mil.pb(rl);
			mir.pb(rr);
		}
		for (int y1: b1)
		{
			int rr=MOD,rl=MOD;
			for (int i=0;i<k;++i) if (n-x[i]<=d)
			{
				if (y[i]<=y1) rr=min(rr,y1-y[i]);
				if (y[i]>=y1) rl=min(rl,y[i]-y1);
			}
			mil.pb(rl);
			mir.pb(rr);
		}
		for (int x1: a1)
		{
			int rr=MOD,rl=MOD;
			for (int i=0;i<k;++i)
			{
				bool ok=0;
				if (x[i]<=x1 && x1-x[i]<=d) ok=1;
				if (x[i]>=x1 && x[i]-x1<=u) ok=1;
				if (ok) rl=min(rl,y[i]-1);
			}
			mil.pb(rl);
			mir.pb(rr);
		}
		for (int x1: a1)
		{
			int rr=MOD,rl=MOD;
			for (int i=0;i<k;++i)
			{
				bool ok=0;
				if (x[i]<=x1 && x1-x[i]<=d) ok=1;
				if (x[i]>=x1 && x[i]-x1<=u) ok=1;
				if (ok) rr=min(rr,m-y[i]),sy.insert(y[i]);
			}
			int la=0;
			for (int y1: sy)
			{
				mlr1=max(mlr1,y1-la-1);
				la=y1;
			}
			sy.clear();
			mil.pb(rl);
			mir.pb(rr);
		}
		for (int x2: a1)
		{
			int x1=x2-u-1;
			if (x1<=1) continue;
			int rr=MOD,rl=MOD;
			for (int i=0;i<k;++i)
			{
				bool ok=0;
				if (x[i]<=x1 && x1-x[i]<=d) ok=1;
				if (x[i]>=x1 && x[i]-x1<=u) ok=1;
				if (ok) rl=min(rl,y[i]-1);
			}
			mil.pb(rl);
			mir.pb(rr);
		}
		for (int x2: a1)
		{
			int x1=x2-u-1;
			if (x1<=1) continue;
			int rr=MOD,rl=MOD;
			for (int i=0;i<k;++i)
			{
				bool ok=0;
				if (x[i]<=x1 && x1-x[i]<=d) ok=1;
				if (x[i]>=x1 && x[i]-x1<=u) ok=1;
				if (ok) rr=min(rr,m-y[i]),sy.insert(y[i]);
			}
			int la=0;
			for (int y1: sy)
			{
				mlr1=max(mlr1,y1-la-1);
				la=y1;
			}
			sy.clear();
			mil.pb(rl);
			mir.pb(rr);
		}
		for (int x2: a1)
		{
			int x1=x2+d+1;
			if (x1>=n) continue;
			int rr=MOD,rl=MOD;
			for (int i=0;i<k;++i)
			{
				bool ok=0;
				if (x[i]<=x1 && x1-x[i]<=d) ok=1;
				if (x[i]>=x1 && x[i]-x1<=u) ok=1;
				if (ok) rl=min(rl,y[i]-1),sy.insert(y[i]);
			}
			int la=0;
			for (int y1: sy)
			{
				mlr1=max(mlr1,y1-la-1);
				la=y1;
			}
			sy.clear();
			mil.pb(rl);
			mir.pb(rr);
		}
		for (int x2: a1)
		{
			int x1=x2+d+1;
			if (x1>=n) continue;
			int rr=MOD,rl=MOD;
			for (int i=0;i<k;++i)
			{
				bool ok=0;
				if (x[i]<=x1 && x1-x[i]<=d) ok=1;
				if (x[i]>=x1 && x[i]-x1<=u) ok=1;
				if (ok) rr=min(rr,m-y[i]);
			}
			mil.pb(rl);
			mir.pb(rr);
		}
		//cout<<u<<' '<<d<<en;
		//for (int i=0;i<mil.size();++i) cout<<mil[i]<<' '<<mir[i]<<en;
		for (ll l: mil) if (l>=ml)
		{
			ll r=0;
			for (int i=0;i<mir.size();++i) if (mil[i]>l) r=max(r,mir[i]);
			ans=min(ans,max(mlr1,l+max(r,mr))+u+d);
		}
		//cout<<ans<<en<<en<<en;
	}*/
	cout<<ans<<en;
}

Compilation message

cultivation.cpp: In function 'int main()':
cultivation.cpp:210:16: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
  for (int i=1;i<a.size();++i) mud=max(mud,a[i]-a[i-1]-1);
               ~^~~~~~~~~
cultivation.cpp:212:16: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
  for (int i=1;i<b.size();++i) mlr=max(mlr,b[i]-b[i-1]-1);
               ~^~~~~~~~~
cultivation.cpp:214:16: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
  for (int i=0;i<a.size();++i) for (int j=i;j<a.size();++j) d1.insert(max(0,a[j]-a[i]-1));
               ~^~~~~~~~~
cultivation.cpp:214:45: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
  for (int i=0;i<a.size();++i) for (int j=i;j<a.size();++j) d1.insert(max(0,a[j]-a[i]-1));
                                            ~^~~~~~~~~
cultivation.cpp:215:16: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
  for (int i=0;i<b.size();++i) for (int j=i;j<b.size();++j) d2.insert(max(0,b[j]-b[i]-1));
               ~^~~~~~~~~
cultivation.cpp:215:45: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
  for (int i=0;i<b.size();++i) for (int j=i;j<b.size();++j) d2.insert(max(0,b[j]-b[i]-1));
                                            ~^~~~~~~~~
cultivation.cpp:364:18: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
    for (int i=0;i<mir.size();++i) if (mil[i]>l) r=max(r,mir[i]);
                 ~^~~~~~~~~~~

Subtask #1
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 5 ms 256 KB Output is correct
2 Correct 5 ms 512 KB Output is correct
3 Correct 5 ms 384 KB Output is correct
4 Correct 5 ms 384 KB Output is correct
5 Correct 5 ms 256 KB Output is correct
6 Correct 5 ms 256 KB Output is correct
7 Correct 5 ms 384 KB Output is correct
8 Correct 5 ms 384 KB Output is correct
9 Correct 5 ms 384 KB Output is correct
10 Correct 5 ms 384 KB Output is correct
11 Correct 5 ms 256 KB Output is correct
12 Correct 5 ms 384 KB Output is correct
13 Correct 5 ms 384 KB Output is correct
14 Correct 5 ms 384 KB Output is correct
15 Correct 5 ms 384 KB Output is correct
16 Correct 5 ms 384 KB Output is correct

Subtask #2
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 5 ms 256 KB Output is correct
2 Correct 5 ms 512 KB Output is correct
3 Correct 5 ms 384 KB Output is correct
4 Correct 5 ms 384 KB Output is correct
5 Correct 5 ms 256 KB Output is correct
6 Correct 5 ms 256 KB Output is correct
7 Correct 5 ms 384 KB Output is correct
8 Correct 5 ms 384 KB Output is correct
9 Correct 5 ms 384 KB Output is correct
10 Correct 5 ms 384 KB Output is correct
11 Correct 5 ms 256 KB Output is correct
12 Correct 5 ms 384 KB Output is correct
13 Correct 5 ms 384 KB Output is correct
14 Correct 5 ms 384 KB Output is correct
15 Correct 5 ms 384 KB Output is correct
16 Correct 5 ms 384 KB Output is correct
17 Correct 8 ms 384 KB Output is correct
18 Correct 15 ms 384 KB Output is correct
19 Correct 37 ms 384 KB Output is correct
20 Correct 8 ms 384 KB Output is correct
21 Correct 220 ms 384 KB Output is correct
22 Correct 95 ms 384 KB Output is correct
23 Correct 13 ms 456 KB Output is correct
24 Correct 102 ms 256 KB Output is correct
25 Correct 125 ms 384 KB Output is correct
26 Correct 262 ms 384 KB Output is correct
27 Correct 150 ms 256 KB Output is correct
28 Correct 107 ms 384 KB Output is correct
29 Correct 71 ms 464 KB Output is correct
30 Correct 91 ms 384 KB Output is correct
31 Correct 62 ms 384 KB Output is correct
32 Correct 96 ms 384 KB Output is correct

Subtask #3
0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 5 ms 256 KB Output is correct
2 Correct 5 ms 512 KB Output is correct
3 Correct 5 ms 384 KB Output is correct
4 Correct 5 ms 384 KB Output is correct
5 Correct 5 ms 256 KB Output is correct
6 Correct 5 ms 256 KB Output is correct
7 Correct 5 ms 384 KB Output is correct
8 Correct 5 ms 384 KB Output is correct
9 Correct 5 ms 384 KB Output is correct
10 Correct 5 ms 384 KB Output is correct
11 Correct 5 ms 256 KB Output is correct
12 Correct 5 ms 384 KB Output is correct
13 Correct 5 ms 384 KB Output is correct
14 Correct 5 ms 384 KB Output is correct
15 Correct 5 ms 384 KB Output is correct
16 Correct 5 ms 384 KB Output is correct
17 Correct 8 ms 384 KB Output is correct
18 Correct 15 ms 384 KB Output is correct
19 Correct 37 ms 384 KB Output is correct
20 Correct 8 ms 384 KB Output is correct
21 Correct 220 ms 384 KB Output is correct
22 Correct 95 ms 384 KB Output is correct
23 Correct 13 ms 456 KB Output is correct
24 Correct 102 ms 256 KB Output is correct
25 Correct 125 ms 384 KB Output is correct
26 Correct 262 ms 384 KB Output is correct
27 Correct 150 ms 256 KB Output is correct
28 Correct 107 ms 384 KB Output is correct
29 Correct 71 ms 464 KB Output is correct
30 Correct 91 ms 384 KB Output is correct
31 Correct 62 ms 384 KB Output is correct
32 Correct 96 ms 384 KB Output is correct
33 Correct 22 ms 2816 KB Output is correct
34 Execution timed out 2099 ms 2688 KB Time limit exceeded
35 Halted 0 ms 0 KB -

Subtask #4
0 / 30.0

# Verdict Execution time Memory Grader output
1 Correct 576 ms 384 KB Output is correct
2 Execution timed out 2068 ms 384 KB Time limit exceeded
3 Halted 0 ms 0 KB -

Subtask #5
0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 576 ms 384 KB Output is correct
2 Execution timed out 2068 ms 384 KB Time limit exceeded
3 Halted 0 ms 0 KB -

Subtask #6
0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 5 ms 256 KB Output is correct
2 Correct 5 ms 512 KB Output is correct
3 Correct 5 ms 384 KB Output is correct
4 Correct 5 ms 384 KB Output is correct
5 Correct 5 ms 256 KB Output is correct
6 Correct 5 ms 256 KB Output is correct
7 Correct 5 ms 384 KB Output is correct
8 Correct 5 ms 384 KB Output is correct
9 Correct 5 ms 384 KB Output is correct
10 Correct 5 ms 384 KB Output is correct
11 Correct 5 ms 256 KB Output is correct
12 Correct 5 ms 384 KB Output is correct
13 Correct 5 ms 384 KB Output is correct
14 Correct 5 ms 384 KB Output is correct
15 Correct 5 ms 384 KB Output is correct
16 Correct 5 ms 384 KB Output is correct
17 Correct 8 ms 384 KB Output is correct
18 Correct 15 ms 384 KB Output is correct
19 Correct 37 ms 384 KB Output is correct
20 Correct 8 ms 384 KB Output is correct
21 Correct 220 ms 384 KB Output is correct
22 Correct 95 ms 384 KB Output is correct
23 Correct 13 ms 456 KB Output is correct
24 Correct 102 ms 256 KB Output is correct
25 Correct 125 ms 384 KB Output is correct
26 Correct 262 ms 384 KB Output is correct
27 Correct 150 ms 256 KB Output is correct
28 Correct 107 ms 384 KB Output is correct
29 Correct 71 ms 464 KB Output is correct
30 Correct 91 ms 384 KB Output is correct
31 Correct 62 ms 384 KB Output is correct
32 Correct 96 ms 384 KB Output is correct
33 Correct 22 ms 2816 KB Output is correct
34 Execution timed out 2099 ms 2688 KB Time limit exceeded
35 Halted 0 ms 0 KB -