Submission #412877

#	Time	Username	Problem	Language	Result	Execution time	Memory
412877		Ahmadsm2005	Meetings (IOI18_meetings)	C++14	0 / 100	22 ms	5332 KiB

meetings

#include "meetings.h"
//#include "grader.cpp"
#include<bits/stdc++.h>
using namespace std;
int sparse[750001][21],LOG[750001];
int query(int L,int R){
int Q=LOG[R-L+1];
return max(sparse[L][Q],sparse[R-(1<<Q)+1][Q]);
}
vector<long long>minimum_costs(vector<int>H,vector<int>L,vector<int>R){
vector<long long>ANS;
LOG[1]=0;
for(int i=2;i<=750000;i++)
LOG[i]=LOG[i/2];
sparse[0][0]=((H[0]==1)?1:0);
for(int i=1;i<H.size();i++)
sparse[i][0]=((H[0]==1)?sparse[i][0]+1:0);
for(int l=1;l<21;l++){
for(int i=0;i+(1<<(l-1))<H.size();i++){
sparse[i][l]=max(sparse[i][l-1],sparse[i+(1<<(l-1))][l-1]);
}
}
for(int i=0;i<L.size();i++)
ANS.push_back((R[i]-L[i]+1)*2-query(L[i],R[i]));
return ANS;
}

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:16:14: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   16 | for(int i=1;i<H.size();i++)
      |             ~^~~~~~~~~
meetings.cpp:19:25: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   19 | for(int i=0;i+(1<<(l-1))<H.size();i++){
      |             ~~~~~~~~~~~~^~~~~~~~~
meetings.cpp:23:14: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   23 | for(int i=0;i<L.size();i++)
      |             ~^~~~~~~~~

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