oj.uz

Submission #999413

# Submission time Handle Problem Language Result Execution time Memory
999413 2024-06-15T12:46:42 Z AdamGS Cultivation (JOI17_cultivation) C++17
35 / 100
 2000 ms 704 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=Ei.size()-1;
  while(po<ko) {
    ll sr=(po+ko)/2;
    if(Ei[sr].st<b) po=sr+1; else ko=sr;
  }
  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=10*INF, ma=0;
        for(int l=i+1; l<j; ++l) {
          if(T[P[l].nd].st>=T[P[i].nd].st) mi=min(mi, T[P[l].nd].st-a);
          if(T[P[l].nd].st-a<=T[P[j].nd].st) ma=max(ma, T[P[l].nd].st);
        }
        if(mi==10*INF || ma==0) Ei.pb({10*INF, abs(P[i].st-P[j].st)-1});
        else if(mi<=T[P[j].nd].st || ma>=T[P[i].nd].st) Ei.pb({-1, 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 2 ms 348 KB Output is correct
6 Correct 0 ms 348 KB Output is correct
7 Correct 0 ms 348 KB Output is correct
8 Correct 8 ms 348 KB Output is correct
9 Correct 1 ms 348 KB Output is correct
10 Correct 0 ms 348 KB Output is correct
11 Correct 0 ms 348 KB Output is correct
12 Correct 0 ms 348 KB Output is correct
13 Correct 0 ms 348 KB Output is correct
14 Correct 0 ms 344 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 2 ms 348 KB Output is correct
6 Correct 0 ms 348 KB Output is correct
7 Correct 0 ms 348 KB Output is correct
8 Correct 8 ms 348 KB Output is correct
9 Correct 1 ms 348 KB Output is correct
10 Correct 0 ms 348 KB Output is correct
11 Correct 0 ms 348 KB Output is correct
12 Correct 0 ms 348 KB Output is correct
13 Correct 0 ms 348 KB Output is correct
14 Correct 0 ms 344 KB Output is correct
15 Correct 0 ms 348 KB Output is correct
16 Correct 0 ms 348 KB Output is correct
17 Correct 27 ms 348 KB Output is correct
18 Execution timed out 2079 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 2 ms 348 KB Output is correct
6 Correct 0 ms 348 KB Output is correct
7 Correct 0 ms 348 KB Output is correct
8 Correct 8 ms 348 KB Output is correct
9 Correct 1 ms 348 KB Output is correct
10 Correct 0 ms 348 KB Output is correct
11 Correct 0 ms 348 KB Output is correct
12 Correct 0 ms 348 KB Output is correct
13 Correct 0 ms 348 KB Output is correct
14 Correct 0 ms 344 KB Output is correct
15 Correct 0 ms 348 KB Output is correct
16 Correct 0 ms 348 KB Output is correct
17 Correct 27 ms 348 KB Output is correct
18 Execution timed out 2079 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 20 ms 348 KB Output is correct
2 Correct 57 ms 348 KB Output is correct
3 Correct 70 ms 348 KB Output is correct
4 Correct 41 ms 344 KB Output is correct
5 Correct 72 ms 348 KB Output is correct
6 Correct 70 ms 348 KB Output is correct
7 Correct 46 ms 348 KB Output is correct
8 Correct 23 ms 344 KB Output is correct
9 Correct 47 ms 348 KB Output is correct
10 Correct 65 ms 344 KB Output is correct
11 Correct 63 ms 344 KB Output is correct
12 Correct 70 ms 344 KB Output is correct
13 Correct 62 ms 348 KB Output is correct
14 Correct 69 ms 348 KB Output is correct
15 Correct 17 ms 348 KB Output is correct
16 Correct 67 ms 348 KB Output is correct
17 Correct 63 ms 348 KB Output is correct
18 Correct 28 ms 344 KB Output is correct
19 Correct 80 ms 704 KB Output is correct
20 Correct 24 ms 344 KB Output is correct

Subtask #5
0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 20 ms 348 KB Output is correct
2 Correct 57 ms 348 KB Output is correct
3 Correct 70 ms 348 KB Output is correct
4 Correct 41 ms 344 KB Output is correct
5 Correct 72 ms 348 KB Output is correct
6 Correct 70 ms 348 KB Output is correct
7 Correct 46 ms 348 KB Output is correct
8 Correct 23 ms 344 KB Output is correct
9 Correct 47 ms 348 KB Output is correct
10 Correct 65 ms 344 KB Output is correct
11 Correct 63 ms 344 KB Output is correct
12 Correct 70 ms 344 KB Output is correct
13 Correct 62 ms 348 KB Output is correct
14 Correct 69 ms 348 KB Output is correct
15 Correct 17 ms 348 KB Output is correct
16 Correct 67 ms 348 KB Output is correct
17 Correct 63 ms 348 KB Output is correct
18 Correct 28 ms 344 KB Output is correct
19 Correct 80 ms 704 KB Output is correct
20 Correct 24 ms 344 KB Output is correct
21 Execution timed out 2049 ms 600 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 2 ms 348 KB Output is correct
6 Correct 0 ms 348 KB Output is correct
7 Correct 0 ms 348 KB Output is correct
8 Correct 8 ms 348 KB Output is correct
9 Correct 1 ms 348 KB Output is correct
10 Correct 0 ms 348 KB Output is correct
11 Correct 0 ms 348 KB Output is correct
12 Correct 0 ms 348 KB Output is correct
13 Correct 0 ms 348 KB Output is correct
14 Correct 0 ms 344 KB Output is correct
15 Correct 0 ms 348 KB Output is correct
16 Correct 0 ms 348 KB Output is correct
17 Correct 27 ms 348 KB Output is correct
18 Execution timed out 2079 ms 348 KB Time limit exceeded
19 Halted 0 ms 0 KB -