Submission #441317

#	Time	Username	Problem	Language	Result	Execution time	Memory
441317		julian33	Boxes with souvenirs (IOI15_boxes)	C++14	10 / 100	3 ms	204 KiB

boxes

#include <bits/stdc++.h>
 
using namespace std;
 
#ifdef LOCAL
#define deb(...) logger(#__VA_ARGS__, __VA_ARGS__)
template<typename ...Args>
void logger(string vars, Args&&... values) {
    cerr<<vars<<" = ";
    string delim="";
    (...,(cerr<<delim<<values,delim=", "));
    cerr<<"\n";
}
#else
#define deb(...) logger(#__VA_ARGS__, __VA_ARGS__)
template<typename ...Args>
void logger(string vars, Args&&... values) {}
#endif
 
#define pb push_back
#define sz(x) (int)(x.size())
typedef long long ll;
typedef pair<int,int> pii;
typedef pair<ll,ll> pll;
template<typename T> inline void maxa(T& a,T b){a=max(a,b);}
template<typename T> inline void mina(T& a,T b){a=min(a,b);}

ll solve(int positions[],int N,int K,int L){
    ll ans=0;
    vector<ll> pref(N),suff(N);
    int zero=1;
    for(int i=0;i<N;i++){
        if(positions[i])
            zero=0;
        if(i<K){
            if(zero)
                pref[i]=0;
            else
                pref[i]=min(2*positions[i],L);
        } else{
            if(zero)
                pref[i]=0;
            else if(positions[i]==0)
                pref[i]=pref[i/K*K-1]+L;
            else
                pref[i]=pref[i/K*K-1]+min(2*positions[i],L);
        }
    }
    zero=1;
    for(int i=N-1;i>=0;i--){
        if(positions[i])
            zero=0;
        if(N-i-1<K){
            if(zero)
                suff[i]=0;
            else
                suff[i]=min(2*(L-positions[i]),L);
        } else{
            if(zero)
                suff[i]=0;
            else
                suff[i]=suff[N-1-(N-i-1)/K*K+1]+min(2*(L-positions[i]),L);
        }
    }   
    ans=min(pref[N-1],suff[0]);
    for(int i=0;i<N-1;i++){
        mina(ans,pref[i]+suff[i+1]);
    }
    return ans;
}
 
ll delivery(int N, int K, int L, int positions[]){
    ll ans=solve(positions,N,K,L);
    while(positions[0]==0){
        rotate(positions,positions+1,positions+N);
        mina(ans,solve(positions,N,K,L));
    }
    return ans;
}

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