Submission #823314

#	Time	Username	Problem	Language	Result	Execution time	Memory
823314		Dremix10	Meetings (IOI18_meetings)	C++17	4 / 100	5541 ms	1484 KiB

meetings

#include "meetings.h"
#include <bits/stdc++.h>
using namespace std;
#define F first
#define S second
#define all(x) (x).begin(),(x).end()
typedef long long ll;
typedef pair<int,int> pi;
typedef pair<ll,ll> pl;
const int N = 3e5+5;
const ll INF = 1e18+5;
const int MOD = 1e9+7;


vector<long long> minimum_costs(vector<int> arr, vector<int> L, vector<int> R) {
    int n = arr.size();
    int q = L.size();
    int i,j,k;

    vector<ll> ans(q);

    for(k=0;k<q;k++){
        int x = L[k];
        int y = R[k];
        ll res = INF;
        for(i=x;i<=y;i++){
            // good i is always local minima
            if(i-1 >= x && arr[i-1] < arr[i] || i+1 <= y && arr[i+1] < arr[i])continue;
            
            ll curr = 0;
            int maxi = 0;
            for(j=i;j<=y;j++){
                maxi = max(maxi,arr[j]);
                curr += maxi;
            }
            maxi = arr[i];
            for(j=i-1;j>=x;j--){
                maxi = max(maxi,arr[j]);
                curr += maxi;
            }
            res = min(res,curr);
        }
        ans[k] = res;
    }
    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:28:25: warning: suggest parentheses around '&&' within '||' [-Wparentheses]
   28 |             if(i-1 >= x && arr[i-1] < arr[i] || i+1 <= y && arr[i+1] < arr[i])continue;
meetings.cpp:16:9: warning: unused variable 'n' [-Wunused-variable]
   16 |     int n = arr.size();
      |         ^

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