Submission #587728

#	Time	Username	Problem	Language	Result	Execution time	Memory
587728		Koosha_mv	Meetings (IOI18_meetings)	C++14	4 / 100	5594 ms	1752 KiB

meetings

#include "meetings.h"
#include <bits/stdc++.h>
using namespace std;
#define dbgv(v) cout<<#v<<" = "; f(i,0,int(v.size())) cout<<v[i]<<" "; cout<<endl
#define dbga(a,x,y) cout<<#a<<" = "; f(i,x,y) cout<<a[i]<<" "; cout<<endl
#define erorp(x) cout<<#x<<"={"<<x.F<<" , "<<x.S<<"}"<<endl
#define eror(x) cout<<#x<<'='<<(x)<<endl
#define f_(i,a,b) for(int i=a;i>=b;i--)
#define f(i,a,b) for(int i=a;i<b;i++)
#define nb(x) __builtin_popcount(x)
#define all(v) v.begin(),v.end()
#define bit(n,k) (((n)>>(k))&1)
#define Add(x,y) x=(x+y)%mod
#define maxm(a,b) a=max(a,b)
#define minm(a,b) a=min(a,b)
#define lst(x) x[x.size()-1]
#define sz(x) int(x.size())
#define mp make_pair
#define ll long long
#define pb push_back
#define S second
#define F first

const int N=1e6+99;
const ll inf=1e9+99;

int n,q;
ll res[N];
vector<ll> H,A;
vector<ll> ans;

ll solve(vector<ll> A){
  vector<ll> vec(1);
  ll sum=0;
  f(i,0,int(A.size())) res[i]=0;
  f(i,1,int(A.size())-1){
    while(A[i]>=A[vec.back()]){
      int x=vec.back(),y=x;
      vec.pop_back();
      if(vec.size()) y=vec.back();
      sum-=(x-y)*A[x];
    }
    sum+=(i-vec.back())*A[i];
    res[i]+=sum;
    vec.pb(i);
  }
  sum=0;
  vec.resize(1);
  vec[0]=A.size()-1;
  f_(i,int(A.size())-2,1){
    while(A[i]>=A[vec.back()]){
      int x=vec.back(),y=x;
      vec.pop_back();
      if(vec.size()) y=vec.back();
      sum-=(y-x)*A[x];
    }
    sum+=(vec.back()-i)*A[i];
    res[i]+=sum;
    vec.pb(i);
  }
  ll ans=1ll*N*inf,mx=0;
  f(i,1,int(A.size())-1){
    minm(ans,res[i]-A[i]);
    sum=mx=A[i];
    f_(j,i-1,1){
      maxm(mx,A[j]);
      sum+=mx;
    }
    mx=A[i];
    f(j,i+1,A.size()-1){
      maxm(mx,A[j]);
      sum+=mx;
    }
    minm(ans,sum);
  }
  return ans;
}

vector<ll> minimum_costs(vector<int> _H,vector<int> L,vector<int> R){
  q=L.size(),n=_H.size();
  f(i,0,n) H.pb(_H[i]);
  ans.resize(q);
  f(i,0,q){
    A.clear();
    A.pb(inf);
    f(j,L[i],R[i]+1) A.pb(H[j]);
    A.pb(inf);
    ans[i]=solve(A);
  }
  return ans;
}

Compilation message (stderr)

meetings.cpp: In function 'long long int solve(std::vector<long long int>)':
meetings.cpp:9:31: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<long long int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
    9 | #define f(i,a,b) for(int i=a;i<b;i++)
......
   70 |     f(j,i+1,A.size()-1){
      |       ~~~~~~~~~~~~~~~~         
meetings.cpp:70:5: note: in expansion of macro 'f'
   70 |     f(j,i+1,A.size()-1){
      |     ^

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