oj.uz

Submission #999925

# Submission time Handle Problem Language Result Execution time Memory
999925 2024-06-16T10:23:03 Z AdamGS Cultivation (JOI17_cultivation) C++17
55 / 100
 2000 ms 2020 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, tmi[LIM][LIM], tma[LIM][LIM];
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);
  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(i, n) rep(j, n) tma[i][j]=0;
    rep(i, n) rep(j, n) tmi[i][j]=R+1;
    rep(i, n) {
      for(int j=i+1; j<n; ++j) {
        tmi[i][j]=tmi[i][j-1];
        if(T[P[j].nd].st>=T[P[i].nd].st) tmi[i][j]=min(tmi[i][j], T[P[j].nd].st-a);
      }
      for(int j=i-1; j>=0; --j) {
        tma[j][i]=tma[j+1][i];
        if(T[P[j].nd].st<=T[P[i].nd].st) tma[j][i]=max(tma[j][i], T[P[j].nd].st);
      }
    }
    rep(j, n) rep(i, j) {
      if(T[P[i].nd].st<=T[P[j].nd].st) {
        if(tmi[i][j-1]<=0) Ei.pb({-1, abs(P[i].st-P[j].st)-1});
        else if(tmi[i][j-1]==10*INF || tma[i+1][j]==0) Ei.pb({10*INF, abs(P[i].st-P[j].st)-1});
        else Ei.pb({tmi[i][j-1]-tma[i+1][j]-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';
}

Compilation message

cultivation.cpp: In function 'll solveab(ll, ll)':
cultivation.cpp:16:23: warning: unused variable 'lst' [-Wunused-variable]
   16 |   ll c=0, d=0, cpd=0, lst=1;
      |                       ^~~

Subtask #1
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 344 KB Output is correct
2 Correct 1 ms 344 KB Output is correct
3 Correct 1 ms 348 KB Output is correct
4 Correct 0 ms 348 KB Output is correct
5 Correct 1 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 1 ms 348 KB Output is correct
9 Correct 0 ms 348 KB Output is correct
10 Correct 1 ms 612 KB Output is correct
11 Correct 0 ms 348 KB Output is correct
12 Correct 1 ms 348 KB Output is correct
13 Correct 0 ms 348 KB Output is correct
14 Correct 1 ms 344 KB Output is correct
15 Correct 0 ms 344 KB Output is correct
16 Correct 0 ms 344 KB Output is correct

Subtask #2
0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 344 KB Output is correct
2 Correct 1 ms 344 KB Output is correct
3 Correct 1 ms 348 KB Output is correct
4 Correct 0 ms 348 KB Output is correct
5 Correct 1 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 1 ms 348 KB Output is correct
9 Correct 0 ms 348 KB Output is correct
10 Correct 1 ms 612 KB Output is correct
11 Correct 0 ms 348 KB Output is correct
12 Correct 1 ms 348 KB Output is correct
13 Correct 0 ms 348 KB Output is correct
14 Correct 1 ms 344 KB Output is correct
15 Correct 0 ms 344 KB Output is correct
16 Correct 0 ms 344 KB Output is correct
17 Correct 2 ms 344 KB Output is correct
18 Correct 89 ms 860 KB Output is correct
19 Correct 6 ms 600 KB Output is correct
20 Correct 3 ms 344 KB Output is correct
21 Correct 33 ms 604 KB Output is correct
22 Correct 577 ms 1116 KB Output is correct
23 Correct 11 ms 600 KB Output is correct
24 Execution timed out 2057 ms 2020 KB Time limit exceeded
25 Halted 0 ms 0 KB -

Subtask #3
0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 344 KB Output is correct
2 Correct 1 ms 344 KB Output is correct
3 Correct 1 ms 348 KB Output is correct
4 Correct 0 ms 348 KB Output is correct
5 Correct 1 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 1 ms 348 KB Output is correct
9 Correct 0 ms 348 KB Output is correct
10 Correct 1 ms 612 KB Output is correct
11 Correct 0 ms 348 KB Output is correct
12 Correct 1 ms 348 KB Output is correct
13 Correct 0 ms 348 KB Output is correct
14 Correct 1 ms 344 KB Output is correct
15 Correct 0 ms 344 KB Output is correct
16 Correct 0 ms 344 KB Output is correct
17 Correct 2 ms 344 KB Output is correct
18 Correct 89 ms 860 KB Output is correct
19 Correct 6 ms 600 KB Output is correct
20 Correct 3 ms 344 KB Output is correct
21 Correct 33 ms 604 KB Output is correct
22 Correct 577 ms 1116 KB Output is correct
23 Correct 11 ms 600 KB Output is correct
24 Execution timed out 2057 ms 2020 KB Time limit exceeded
25 Halted 0 ms 0 KB -

Subtask #4
30.0 / 30.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 348 KB Output is correct
2 Correct 4 ms 604 KB Output is correct
3 Correct 4 ms 604 KB Output is correct
4 Correct 4 ms 604 KB Output is correct
5 Correct 5 ms 604 KB Output is correct
6 Correct 6 ms 600 KB Output is correct
7 Correct 4 ms 348 KB Output is correct
8 Correct 4 ms 604 KB Output is correct
9 Correct 5 ms 604 KB Output is correct
10 Correct 4 ms 600 KB Output is correct
11 Correct 5 ms 344 KB Output is correct
12 Correct 5 ms 604 KB Output is correct
13 Correct 4 ms 604 KB Output is correct
14 Correct 4 ms 604 KB Output is correct
15 Correct 4 ms 348 KB Output is correct
16 Correct 5 ms 604 KB Output is correct
17 Correct 5 ms 604 KB Output is correct
18 Correct 4 ms 600 KB Output is correct
19 Correct 4 ms 608 KB Output is correct
20 Correct 5 ms 604 KB Output is correct

Subtask #5
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 348 KB Output is correct
2 Correct 4 ms 604 KB Output is correct
3 Correct 4 ms 604 KB Output is correct
4 Correct 4 ms 604 KB Output is correct
5 Correct 5 ms 604 KB Output is correct
6 Correct 6 ms 600 KB Output is correct
7 Correct 4 ms 348 KB Output is correct
8 Correct 4 ms 604 KB Output is correct
9 Correct 5 ms 604 KB Output is correct
10 Correct 4 ms 600 KB Output is correct
11 Correct 5 ms 344 KB Output is correct
12 Correct 5 ms 604 KB Output is correct
13 Correct 4 ms 604 KB Output is correct
14 Correct 4 ms 604 KB Output is correct
15 Correct 4 ms 348 KB Output is correct
16 Correct 5 ms 604 KB Output is correct
17 Correct 5 ms 604 KB Output is correct
18 Correct 4 ms 600 KB Output is correct
19 Correct 4 ms 608 KB Output is correct
20 Correct 5 ms 604 KB Output is correct
21 Correct 345 ms 1116 KB Output is correct
22 Correct 374 ms 1364 KB Output is correct
23 Correct 321 ms 1116 KB Output is correct
24 Correct 321 ms 1140 KB Output is correct
25 Correct 357 ms 1368 KB Output is correct
26 Correct 329 ms 1152 KB Output is correct
27 Correct 249 ms 1112 KB Output is correct
28 Correct 378 ms 1112 KB Output is correct
29 Correct 336 ms 1112 KB Output is correct
30 Correct 346 ms 1116 KB Output is correct
31 Correct 389 ms 1140 KB Output is correct
32 Correct 345 ms 1116 KB Output is correct
33 Correct 219 ms 1116 KB Output is correct
34 Correct 313 ms 1112 KB Output is correct
35 Correct 315 ms 1136 KB Output is correct
36 Correct 318 ms 1112 KB Output is correct

Subtask #6
0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 344 KB Output is correct
2 Correct 1 ms 344 KB Output is correct
3 Correct 1 ms 348 KB Output is correct
4 Correct 0 ms 348 KB Output is correct
5 Correct 1 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 1 ms 348 KB Output is correct
9 Correct 0 ms 348 KB Output is correct
10 Correct 1 ms 612 KB Output is correct
11 Correct 0 ms 348 KB Output is correct
12 Correct 1 ms 348 KB Output is correct
13 Correct 0 ms 348 KB Output is correct
14 Correct 1 ms 344 KB Output is correct
15 Correct 0 ms 344 KB Output is correct
16 Correct 0 ms 344 KB Output is correct
17 Correct 2 ms 344 KB Output is correct
18 Correct 89 ms 860 KB Output is correct
19 Correct 6 ms 600 KB Output is correct
20 Correct 3 ms 344 KB Output is correct
21 Correct 33 ms 604 KB Output is correct
22 Correct 577 ms 1116 KB Output is correct
23 Correct 11 ms 600 KB Output is correct
24 Execution timed out 2057 ms 2020 KB Time limit exceeded
25 Halted 0 ms 0 KB -