Submission #394416

#	Time	Username	Problem	Language	Result	Execution time	Memory
394416		Theo830	Meetings (IOI18_meetings)	C++17	0 / 100	273 ms	284488 KiB

meetings

#include <bits/stdc++.h>
using namespace std;
typedef long long ll;
ll INF = 1e18+7;
ll MOD = 998244353;
typedef pair<ll,ll> ii;
#define iii pair<ll,ii>
#define f(i,a,b) for(ll i = a;i < b;i++)
#define pb push_back
#define vll vector<ll>
#define F first
#define S second
#define all(x) (x).begin(), (x).end()
///I hope I will get uprating and don't make mistakes
///I will never stop programming
///sqrt(-1) Love C++
///Please don't hack me
///@TheofanisOrfanou Theo830
///Think different approaches (bs,dp,greedy,graphs,shortest paths,mst)
///Stay Calm
///Look for special cases
///Beware of overflow and array bounds
///Think the problem backwards
///Training
#include "meetings.h"
std::vector<long long> minimum_costs(std::vector<int> H, std::vector<int> L,std::vector<int> R) {
  int Q = L.size();
  ll n = H.size();
  ll maxi[n][n];
  f(i,0,n){
    maxi[i][i] = H[i];
    f(j,i+1,n){
        maxi[i][j] = max(maxi[i][j-1],1LL * H[j]);
    }
  }
  vector<long long> C(Q);
  f(k,0,Q){
    ll ans = INF;
    bool ivra = 0;
    ll em = R[k] - L[k] + 1;
    f(i,L[k],R[k]+1){
        if(H[i] == 2){
            break;
        }
        em--;
        ans = min(ans,R[k] - L[k] + 1 + em);
    }
    ll ex = 0;
    f(i,L[k],R[k]+1){
        ex += H[i] == 2;
    }
    em = R[k] - L[k] + 1;
    if(ex <= 1){
        ans = min(ans,em + ex);
    }
    for(ll i=R[k];i >= L[k];i--){
        if(H[i] == 2){
            break;
        }
        em--;
        ans = min(ans,R[k] - L[k] + 1 + em);
    }
    C[k] = ans;
  }
  return C;
}

Compilation message (stderr)

meetings.cpp: In function 'std::vector<long long int> minimum_costs(std::vector<int>, std::vector<int>, std::vector<int>)':
meetings.cpp:39:10: warning: unused variable 'ivra' [-Wunused-variable]
   39 |     bool ivra = 0;
      |          ^~~~

• Subtask 1: 0 / 4
• Subtask 2: 0 / 15
• Subtask 3: 0 / 17
• Subtask 4: 0 / 24
• Subtask 5: 0 / 40