oj.uz

Submission #999393

# Submission time Handle Problem Language Result Execution time Memory
999393 2024-06-15T12:09:14 Z AdamGS Cultivation (JOI17_cultivation) C++17
35 / 100
 2000 ms 600 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;
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;
  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(A.size()) {
        auto it=A.begin();
        auto p=*it;
        //c=max(c, p.st-1);
        it=A.end(); --it;
        p=*it;
        d=max(d, C-p.st);
      }
      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();
  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});
  }
  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 0 ms 344 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 0 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 0 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 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 0 ms 344 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 0 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 0 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 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 28 ms 348 KB Output is correct
18 Execution timed out 2095 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 0 ms 344 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 0 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 0 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 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 28 ms 348 KB Output is correct
18 Execution timed out 2095 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 14 ms 348 KB Output is correct
2 Correct 58 ms 348 KB Output is correct
3 Correct 69 ms 344 KB Output is correct
4 Correct 45 ms 344 KB Output is correct
5 Correct 78 ms 348 KB Output is correct
6 Correct 73 ms 344 KB Output is correct
7 Correct 45 ms 344 KB Output is correct
8 Correct 21 ms 344 KB Output is correct
9 Correct 46 ms 348 KB Output is correct
10 Correct 64 ms 348 KB Output is correct
11 Correct 62 ms 440 KB Output is correct
12 Correct 69 ms 348 KB Output is correct
13 Correct 62 ms 348 KB Output is correct
14 Correct 71 ms 344 KB Output is correct
15 Correct 16 ms 344 KB Output is correct
16 Correct 67 ms 348 KB Output is correct
17 Correct 62 ms 344 KB Output is correct
18 Correct 29 ms 600 KB Output is correct
19 Correct 70 ms 348 KB Output is correct
20 Correct 22 ms 348 KB Output is correct

Subtask #5
0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 14 ms 348 KB Output is correct
2 Correct 58 ms 348 KB Output is correct
3 Correct 69 ms 344 KB Output is correct
4 Correct 45 ms 344 KB Output is correct
5 Correct 78 ms 348 KB Output is correct
6 Correct 73 ms 344 KB Output is correct
7 Correct 45 ms 344 KB Output is correct
8 Correct 21 ms 344 KB Output is correct
9 Correct 46 ms 348 KB Output is correct
10 Correct 64 ms 348 KB Output is correct
11 Correct 62 ms 440 KB Output is correct
12 Correct 69 ms 348 KB Output is correct
13 Correct 62 ms 348 KB Output is correct
14 Correct 71 ms 344 KB Output is correct
15 Correct 16 ms 344 KB Output is correct
16 Correct 67 ms 348 KB Output is correct
17 Correct 62 ms 344 KB Output is correct
18 Correct 29 ms 600 KB Output is correct
19 Correct 70 ms 348 KB Output is correct
20 Correct 22 ms 348 KB Output is correct
21 Execution timed out 2087 ms 480 KB Time limit exceeded
22 Halted 0 ms 0 KB -

Subtask #6
0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 344 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 0 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 0 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 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 28 ms 348 KB Output is correct
18 Execution timed out 2095 ms 348 KB Time limit exceeded
19 Halted 0 ms 0 KB -