Submission #783283

#	Time	Username	Problem	Language	Result	Execution time	Memory
783283		Matblube	Boxes with souvenirs (IOI15_boxes)	C++14	0 / 100	0 ms	340 KiB

boxes

#include "boxes.h"
#include <iostream>
#include <iomanip>
#include <string>
#include <math.h>
#include <algorithm>
#include <cstring>
#include <numeric>
#include <vector>
#include <map>
#include <set>
#include <deque>
#include <unordered_map>
#include <unordered_set>
using namespace std;
typedef long long ll;
#define dbg(x) cerr<<#x<<": "<<x<<"\n";
#define fr(i, x) for(ll i=0 ; i<x ; i++)
#define fra(x, v) for(auto x:v)
#define fra1(x,v) for(auto &x:v)
#define all(x) x.begin(), x.end()
#define allr(x) x.rbegin(), x.rend()
#define pb(x) push_back(x)
#define F first
#define S second
const ll maxN=1e6;
ll dp[maxN], dp1[maxN];

long long delivery(int N, int K, int L, int p[]) {
    ll n=N, k=K, l=L;
    vector<ll>v(n+1);
    fr(i, n) v[i+1]=p[i];
    dp[1]=dp1[n]=0;
    for(ll i=1; i <=n ; i++) dp[i]+=(min(l, 2*v[i]))+dp[i-1];
    for(ll i=n-1 ; i>0 ; i--) dp1[i]+=(min(l, 2*(l-v[i])))+dp1[i+1];
    ll ans=1e18;
    for(ll i=1 ; i<=n ; i++){
        if(i==n){
            ans=min(ans, dp[i]+dp1[1]);
            continue;
        }
        ans=min(ans, dp[i]+dp1[i+1]);
    }
    return ans;
}

Compilation message (stderr)

boxes.cpp: In function 'long long int delivery(int, int, int, int*)':
boxes.cpp:30:13: warning: unused variable 'k' [-Wunused-variable]
   30 |     ll n=N, k=K, l=L;
      |             ^

• Subtask 1: 0 / 10
• Subtask 2: 0 / 10
• Subtask 3: 0 / 15
• Subtask 4: 0 / 15
• Subtask 5: 0 / 20
• Subtask 6: 0 / 30