Submission #115424

#	Time	Username	Problem	Language	Result	Execution time	Memory
115424		dsjong	Meetings (IOI18_meetings)	C++14	19 / 100	695 ms	398896 KiB

meetings

#include "meetings.h"
#include <bits/stdc++.h>
using namespace std;
long long rsq[5005][5005];
vector<long long> minimum_costs(vector<int> H, vector<int> L, vector<int> R){
	vector<long long>ret;
	int N=H.size();
	memset(rsq,0,sizeof rsq);
	for(int i=0;i<N;i++){
		int maxi=H[i];
		rsq[i][i]=H[i];
		for(int j=i-1;j>=0;j--){
			maxi=max(maxi,H[j]);
			rsq[i][j]=rsq[i][j+1]+maxi;
		}
		maxi=H[i];
		for(int j=i+1;j<N;j++){
			maxi=max(maxi,H[j]);
			rsq[i][j]=rsq[i][j-1]+maxi;
		}
	}
	for(int q=0;q<L.size();q++){
		int l=L[q],r=R[q];
		long long res=LONG_LONG_MAX;
		for(int i=l;i<=r;i++){
			res=min(res,rsq[i][l]+rsq[i][r]-H[i]);
		}
		ret.push_back(res);
	}
	return ret;
}

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:22:15: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
  for(int q=0;q<L.size();q++){
              ~^~~~~~~~~

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