Submission #653619

#	Time	Username	Problem	Language	Result	Execution time	Memory
653619		AdamGS	Uplifting Excursion (BOI22_vault)	C++17	5 / 100	5090 ms	8268 KiB

vault

#include<bits/stdc++.h>
#pragma GCC optimize("Ofast, unroll-loops")
 
using namespace std;
typedef long long ll;
 
const int maxn = 100;
 
int M;
ll L;
 
vector<int> pos(maxn+5), neg(maxn+5);
 
void solve(){
  cin >> M >> L;
  for(int i = 1; i <= M; i++)
    cin >> neg[M-i+1];
  ll ans;
  cin >> ans;
  for(int i = 1; i <= M; i++)
    cin >> pos[i];
  int maxn3 = (maxn*maxn+1)/2*maxn;
  vector<ll> knapsack1(maxn3+5, -1e18), knapsack2(maxn3+5, -1e18);
  knapsack1[0] = knapsack2[0] = 0;
  for(int i = 1; i <= M; i++){
    for(int make = maxn3; make >= 0; make--){
      int a=min(pos[i], make/i), b=min(neg[i], make/i);
      for(int use=0, akt=make-i; use < a; ++use, akt-=i) if(knapsack1[make]<knapsack1[akt]+use+1)
        knapsack1[make]=knapsack1[akt]+use+1;
      for(int use=0, akt=make-i; use<b; ++use, akt-=i) if(knapsack2[make]<knapsack2[akt]+use+1)
        knapsack2[make]=knapsack2[akt]+use+1;
    }
  }
  ll add = -1e18;
  for(int i = 0; i <= maxn3; i++){
    ll need = L-i;
    if(need > 0){
      continue;
    }else if(need == 0){
      add = max(add, knapsack1[i]);
    }else if(-need >= maxn3 || knapsack2[-need] < 0 || knapsack1[i] < 0){
      continue;
    }else{
      add = max(add, knapsack1[i] + knapsack2[-need]);
    }
  }
  if(add < 0){
    cout << "impossible\n";
  }else{
    cout << ans+add;
  }
}
 
int main(){
  ios::sync_with_stdio(false);
  cin.tie(0);
  int tt = 1;
  // cin >> tt;
  while(tt--){
    solve();
  }
}

Compilation message (stderr)

vault.cpp:2:43: warning: bad option '-f unroll-loops' to pragma 'optimize' [-Wpragmas]
    2 | #pragma GCC optimize("Ofast, unroll-loops")
      |                                           ^
vault.cpp:14:12: warning: bad option '-f unroll-loops' to attribute 'optimize' [-Wattributes]
   14 | void solve(){
      |            ^
vault.cpp:54:10: warning: bad option '-f unroll-loops' to attribute 'optimize' [-Wattributes]
   54 | int main(){
      |          ^

• Subtask 1: 5 / 5
• Subtask 2: 0 / 15
• Subtask 3-1: 0 / 10
• Subtask 3-2: 0 / 10
• Subtask 4-1: 0 / 10
• Subtask 4-2: 0 / 10
• Subtask 5-1: 0 / 10
• Subtask 5-2: 0 / 10
• Subtask 6-1: 0 / 10
• Subtask 6-2: 0 / 10