oj.uz

Submission #999447

# Submission time Handle Problem Language Result Execution time Memory
999447 2024-06-15T13:53:46 Z AdamGS Cultivation (JOI17_cultivation) C++17
35 / 100
 2000 ms 604 KB 
#include<bits/stdc++.h>
using namespace std;
typedef long double ld;
typedef long long ll;
#define rep(a, b) for(int a = 0; a < (b); ++a)
#define st first
#define nd second
#define pb push_back
#define all(a) a.begin(), a.end()
const ll INF=2e9+7;
const int LIM=307;
pair<ll,ll>T[LIM];
ll R, C, n;
vector<pair<ll,ll>>Ci, Di, Ei;
ll solveab(ll a, ll b) {
  ll c=0, d=0, cpd=0, lst=1;
  ll po=0, ko=Ci.size()-1;
  while(po<ko) {
    ll sr=(po+ko)/2;
    if(Ci[sr].st>b) po=sr+1; else ko=sr;
  }
  c=Ci[po].nd;
  po=0; ko=Di.size()-1;
  while(po<ko) {
    ll sr=(po+ko)/2;
    if(Di[sr].st>b) po=sr+1; else ko=sr;
  }
  d=Di[po].nd;
  po=0; ko=(int)Ei.size()-1;
  while(po<ko) {
    ll sr=(po+ko)/2;
    if(Ei[sr].st<b) po=sr+1; else ko=sr;
  }
  if(Ei.size()>0 && Ei[po].st>=b) cpd=max(Ei[po].nd, 0ll);
  set<pair<ll,ll>>A;
  multiset<ll>B;
  vector<pair<ll,ll>>V;
  vector<ll>odw(n);
  rep(i, n) V.pb({max(1ll, T[i].st-a), i});
  rep(i, n) V.pb({min(R+1, T[i].st+b+1), i});
  sort(all(V));
  for(auto i : V) {
    if(i.st!=lst) {
      if(B.size()) {
        auto it=B.end(); --it;
        ll p=*it;
        cpd=max(cpd, p);
      }
      lst=i.st;
    }
    if(!odw[i.nd]) {
      odw[i.nd]=1;
      if(A.size()) {
        ll lewo=0, prawo=C+1;
        auto it=A.lower_bound({T[i.nd].nd, i.nd});
        if(it!=A.end()) {
          auto p=*it;
          prawo=p.st;
        }
        if(it!=A.begin()) {
          --it;
          auto p=*it;
          lewo=p.st;
        }
        if(lewo!=0 && prawo!=C+1) B.erase(B.find(prawo-lewo-1));
        if(lewo!=0) B.insert(T[i.nd].nd-lewo-1);
        if(prawo!=C+1) B.insert(prawo-T[i.nd].nd-1);
      }
      A.insert({T[i.nd].nd, i.nd});
    } else {
      A.erase({T[i.nd].nd, i.nd});
      if(A.size()) {
        ll lewo=0, prawo=C+1;
        auto it=A.lower_bound({T[i.nd].nd, i.nd});
        if(it!=A.end()) {
          auto p=*it;
          prawo=p.st;
        }
        if(it!=A.begin()) {
          --it;
          auto p=*it;
          lewo=p.st;
        }
        if(lewo!=0 && prawo!=C+1) B.insert(prawo-lewo-1);
        if(lewo!=0) B.erase(B.find(T[i.nd].nd-lewo-1));
        if(prawo!=C+1) B.erase(B.find(prawo-T[i.nd].nd-1));
      }
    }
  }
  return a+b+max(c+d, cpd);
}
ll solvea(ll a) {
  Ci.clear(); Di.clear(); Ei.clear();
  vector<pair<ll,ll>>P;
  rep(i, n) P.pb({T[i].nd, i});
  sort(all(P));
  rep(i, n) {
    vector<pair<ll,ll>>Q;
    rep(j, i+1) Q.pb({max(1ll, T[P[j].nd].st-a), T[P[j].nd].st});
    sort(all(Q));
    ll ma=1, mi=0;
    for(auto j : Q) {
      mi=max(mi, j.st-ma-1);
      ma=max(ma, j.nd);
    }
    mi=max(mi, R-ma);
    if(Q[0].st!=1) mi=INF;
    Ci.pb({mi, P[i].st-1});
  }
  rep(i, n) {
    vector<pair<ll,ll>>Q;
    rep(j, i+1) Q.pb({max(1ll, T[P[n-j-1].nd].st-a), T[P[n-j-1].nd].st});
    sort(all(Q));
    ll ma=1, mi=0;
    for(auto j : Q) {
      mi=max(mi, j.st-ma-1);
      ma=max(ma, j.nd);
    }
    mi=max(mi, R-ma);
    if(Q[0].st!=1) mi=INF;
    Di.pb({mi, C-P[n-i-1].st});
  }
  rep(xd, 2) {
    rep(j, n) rep(i, j) {
      if(T[P[i].nd].st<=T[P[j].nd].st) {
        ll mi=R+1, ma=0;
        bool czy=false;
        for(int l=i+1; l<j; ++l) {
          if(T[P[l].nd].st>=T[P[j].nd].st) mi=min(mi, T[P[l].nd].st-a);
          if(T[P[l].nd].st<=T[P[i].nd].st) ma=max(ma, T[P[l].nd].st);
          if(T[P[l].nd].st>=T[P[i].nd].st && T[P[l].nd].st<=T[P[j].nd].st) czy=true;
        }
        if(czy || mi<=0) Ei.pb({-1, abs(P[i].st-P[j].st)-1});
        else if(mi==10*INF || ma==0) Ei.pb({10*INF, abs(P[i].st-P[j].st)-1});
        else Ei.pb({mi-ma-2, abs(P[i].st-P[j].st)-1});
      }
    }
    reverse(all(P));
  }
  sort(all(Ei));
  for(int i=(int)Ei.size()-2; i>=0; --i) Ei[i].nd=max(Ei[i].nd, Ei[i+1].nd);
  vector<ll>A;
  rep(i, n) A.pb(T[i].st);
  sort(all(A));
  ll b=R-A[n-1], apb=0;
  rep(i, n-1) apb=max(apb, A[i+1]-A[i]-1);
  ll ans=INF;
  rep(i, n) {
    ll x=R-T[i].st;
    if(x>=b && a+x>=apb) ans=min(ans, solveab(a, x));
  }
  rep(i, n) rep(j, i) {
    ll x=abs(T[i].st-T[j].st)-1;
    if(x==-1 || x<apb) continue;
    ll y=x-a;
    if(y>=b) ans=min(ans, solveab(a, y));
  }
  return ans;
}
ll solve() {
  ll ans=INF;
  rep(i, n) ans=min(ans, solvea(T[i].st-1));
  return ans;
}
int main() {
  ios_base::sync_with_stdio(0); cin.tie(0);
  cin >> R >> C >> n;
  rep(i, n) cin >> T[i].st >> T[i].nd;
  ll ans=INF;
  rep(i, 4) {
    ans=min(ans, solve());
    rep(j, n) T[j]={C-T[j].nd+1, T[j].st};
    swap(R, C);
  }
  cout << ans << '\n';
}

Subtask #1
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 348 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 1 ms 348 KB Output is correct
5 Correct 3 ms 348 KB Output is correct
6 Correct 0 ms 344 KB Output is correct
7 Correct 1 ms 348 KB Output is correct
8 Correct 9 ms 468 KB Output is correct
9 Correct 1 ms 348 KB Output is correct
10 Correct 1 ms 348 KB Output is correct
11 Correct 1 ms 348 KB Output is correct
12 Correct 0 ms 348 KB Output is correct
13 Correct 1 ms 348 KB Output is correct
14 Correct 0 ms 348 KB Output is correct
15 Correct 0 ms 348 KB Output is correct
16 Correct 0 ms 348 KB Output is correct

Subtask #2
0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 348 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 1 ms 348 KB Output is correct
5 Correct 3 ms 348 KB Output is correct
6 Correct 0 ms 344 KB Output is correct
7 Correct 1 ms 348 KB Output is correct
8 Correct 9 ms 468 KB Output is correct
9 Correct 1 ms 348 KB Output is correct
10 Correct 1 ms 348 KB Output is correct
11 Correct 1 ms 348 KB Output is correct
12 Correct 0 ms 348 KB Output is correct
13 Correct 1 ms 348 KB Output is correct
14 Correct 0 ms 348 KB Output is correct
15 Correct 0 ms 348 KB Output is correct
16 Correct 0 ms 348 KB Output is correct
17 Correct 38 ms 344 KB Output is correct
18 Execution timed out 2056 ms 348 KB Time limit exceeded
19 Halted 0 ms 0 KB -

Subtask #3
0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 348 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 1 ms 348 KB Output is correct
5 Correct 3 ms 348 KB Output is correct
6 Correct 0 ms 344 KB Output is correct
7 Correct 1 ms 348 KB Output is correct
8 Correct 9 ms 468 KB Output is correct
9 Correct 1 ms 348 KB Output is correct
10 Correct 1 ms 348 KB Output is correct
11 Correct 1 ms 348 KB Output is correct
12 Correct 0 ms 348 KB Output is correct
13 Correct 1 ms 348 KB Output is correct
14 Correct 0 ms 348 KB Output is correct
15 Correct 0 ms 348 KB Output is correct
16 Correct 0 ms 348 KB Output is correct
17 Correct 38 ms 344 KB Output is correct
18 Execution timed out 2056 ms 348 KB Time limit exceeded
19 Halted 0 ms 0 KB -

Subtask #4
30.0 / 30.0

# Verdict Execution time Memory Grader output
1 Correct 15 ms 348 KB Output is correct
2 Correct 60 ms 348 KB Output is correct
3 Correct 75 ms 452 KB Output is correct
4 Correct 65 ms 344 KB Output is correct
5 Correct 82 ms 452 KB Output is correct
6 Correct 74 ms 348 KB Output is correct
7 Correct 48 ms 348 KB Output is correct
8 Correct 24 ms 344 KB Output is correct
9 Correct 50 ms 348 KB Output is correct
10 Correct 66 ms 344 KB Output is correct
11 Correct 70 ms 448 KB Output is correct
12 Correct 83 ms 344 KB Output is correct
13 Correct 64 ms 344 KB Output is correct
14 Correct 72 ms 348 KB Output is correct
15 Correct 18 ms 344 KB Output is correct
16 Correct 71 ms 348 KB Output is correct
17 Correct 66 ms 456 KB Output is correct
18 Correct 29 ms 344 KB Output is correct
19 Correct 91 ms 348 KB Output is correct
20 Correct 23 ms 348 KB Output is correct

Subtask #5
0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 15 ms 348 KB Output is correct
2 Correct 60 ms 348 KB Output is correct
3 Correct 75 ms 452 KB Output is correct
4 Correct 65 ms 344 KB Output is correct
5 Correct 82 ms 452 KB Output is correct
6 Correct 74 ms 348 KB Output is correct
7 Correct 48 ms 348 KB Output is correct
8 Correct 24 ms 344 KB Output is correct
9 Correct 50 ms 348 KB Output is correct
10 Correct 66 ms 344 KB Output is correct
11 Correct 70 ms 448 KB Output is correct
12 Correct 83 ms 344 KB Output is correct
13 Correct 64 ms 344 KB Output is correct
14 Correct 72 ms 348 KB Output is correct
15 Correct 18 ms 344 KB Output is correct
16 Correct 71 ms 348 KB Output is correct
17 Correct 66 ms 456 KB Output is correct
18 Correct 29 ms 344 KB Output is correct
19 Correct 91 ms 348 KB Output is correct
20 Correct 23 ms 348 KB Output is correct
21 Execution timed out 2020 ms 604 KB Time limit exceeded
22 Halted 0 ms 0 KB -

Subtask #6
0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 348 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 1 ms 348 KB Output is correct
5 Correct 3 ms 348 KB Output is correct
6 Correct 0 ms 344 KB Output is correct
7 Correct 1 ms 348 KB Output is correct
8 Correct 9 ms 468 KB Output is correct
9 Correct 1 ms 348 KB Output is correct
10 Correct 1 ms 348 KB Output is correct
11 Correct 1 ms 348 KB Output is correct
12 Correct 0 ms 348 KB Output is correct
13 Correct 1 ms 348 KB Output is correct
14 Correct 0 ms 348 KB Output is correct
15 Correct 0 ms 348 KB Output is correct
16 Correct 0 ms 348 KB Output is correct
17 Correct 38 ms 344 KB Output is correct
18 Execution timed out 2056 ms 348 KB Time limit exceeded
19 Halted 0 ms 0 KB -