Submission #587712

#	Time	Username	Problem	Language	Result	Execution time	Memory
587712		Koosha_mv	Meetings (IOI18_meetings)	C++14	0 / 100	1 ms	340 KiB

meetings

#include "meetings.h"
#include <bits/stdc++.h>
using namespace std;
#define dbgv(v) cout<<#v<<" = "; f(i,0,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=1e5+99,inf=1e9+99;

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

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

vector<long long> minimum_costs(vector<int> _H,vector<int> L,vector<int> R){
  q=L.size(),n=H.size(),H=_H;
  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<int>)':
meetings.cpp:9:31: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
    9 | #define f(i,a,b) for(int i=a;i<b;i++)
......
   33 |   f(i,0,A.size()) res[i]=0;
      |     ~~~~~~~~~~~~               
meetings.cpp:33:3: note: in expansion of macro 'f'
   33 |   f(i,0,A.size()) res[i]=0;
      |   ^
meetings.cpp:9:31: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
    9 | #define f(i,a,b) for(int i=a;i<b;i++)
......
   34 |   f(i,1,A.size()-1){
      |     ~~~~~~~~~~~~~~             
meetings.cpp:34:3: note: in expansion of macro 'f'
   34 |   f(i,1,A.size()-1){
      |   ^
meetings.cpp:56:11: warning: integer overflow in expression of type 'int' results in '502109225' [-Woverflow]
   56 |   ll ans=N*inf;
      |          ~^~~~
meetings.cpp:9:31: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
    9 | #define f(i,a,b) for(int i=a;i<b;i++)
......
   57 |   f(i,1,A.size()-1) minm(ans,res[i]);
      |     ~~~~~~~~~~~~~~             
meetings.cpp:57:3: note: in expansion of macro 'f'
   57 |   f(i,1,A.size()-1) minm(ans,res[i]);
      |   ^

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