Submission #387475

#	Time	Username	Problem	Language	Result	Execution time	Memory
387475		ACmachine	Boxes with souvenirs (IOI15_boxes)	C++17	100 / 100	620 ms	247924 KiB

boxes

#include "boxes.h"
#include <bits/stdc++.h>
using namespace std;
#include <ext/pb_ds/assoc_container.hpp>
#include <ext/pb_ds/tree_policy.hpp>
using namespace __gnu_pbds;

template<typename T> using ordered_set = tree<T, null_type, less<T>, rb_tree_tag, tree_order_statistics_node_update>;
template<typename T, typename U> using ordered_map = tree<T, U, less<T>, rb_tree_tag, tree_order_statistics_node_update>;

typedef long long ll;
typedef long double ld;

typedef pair<int,int> pii;
typedef pair<ll,ll> pll;

typedef vector<int> vi;
typedef vector<ll> vll;

#define FOR(i,j,k,in) for(int i=(j); i < (k);i+=in)
#define FORD(i,j,k,in) for(int i=(j); i >=(k);i-=in)
#define REP(i,b) FOR(i,0,b,1)
#define REPD(i,b) FORD(i,b,0,1)
#define pb push_back
#define mp make_pair
#define ff first
#define ss second
#define all(x) begin(x), end(x)
#define MANY_TESTS int tcase; cin >> tcase; while(tcase--)

const double EPS = 1e-9;
const int MOD = 1e9+7;
const ll INFF = 1e18;
const int INF = 1e9;
const ld PI = acos((ld)-1);
const vi dy = {1, 0, -1, 0, -1, 1, 1, -1};
const vi dx = {0, 1, 0, -1, -1, 1, -1, 1};

void DBG(){cout << "]" << endl;}
template<typename T, typename ...U> void DBG(const T& head, const U... args){ cout << head << "; "; DBG(args...); }
#define dbg(...) cout << "Line(" << __LINE__ << ") -> [" << #__VA_ARGS__ << "]: [", DBG(__VA_ARGS__);
#define chk() cout << "Check at line(" << __LINE__ << ") hit." << endl;

template<class T, unsigned int U>
ostream& operator<<(ostream& out, const array<T, U> &v){out << "[";  REP(i, U) out << v[i] << ", ";  out << "]"; return out;}
template <class T, class U>
ostream& operator<<(ostream& out, const pair<T, U> &par) {out << "[" << par.first << ";" << par.second << "]"; return out;}
template <class T>
ostream& operator<<(ostream& out, const set<T> &cont) { out << "{"; for( const auto &x:cont) out << x << ", "; out << "}"; return out; }
template <class T, class U>
ostream& operator<<(ostream& out, const map<T, U> &cont) {out << "{"; for( const auto &x:cont) out << x << ", "; out << "}"; return out; }
template<class T>
ostream& operator<<(ostream& out, const vector<T> &v){ out << "[";  REP(i, v.size()) out << v[i] << ", ";  out << "]"; return out;}

template<class T>
istream& operator>>(istream& in, vector<T> &v){ for(auto &x : v) in >> x; return in; }

long long delivery(int N, int K, int L, int pp[]) {
    vector<int> p;
    REP(i, N){
        if(pp[i] == 0) continue;
        else p.pb(pp[i]);
    }
    N = p.size();
    vector<ll> left(N + 1, 0);
    vector<ll> right(N + 1, 0);
    FOR(i, 1, N + 1, 1){
        if(i <= K)
            left[i] = 2 * p[i - 1];
        else
            left[i] = 2 * p[i - 1] + left[i - K];

    }
    reverse(all(p));
    FOR(i, 1, N + 1, 1){
        p[i - 1] = L - p[i - 1];
        if(p[i - 1] == L)
            p[i - 1] = 0;
        if(i <= K)
            right[i] = 2 * p[i - 1];
        else
            right[i] = 2 * p[i - 1] + right[i - K];
    }
    ll ans = INFF;
    // no full circle
    REP(i, N + 1){
        ans = min(ans, left[i] + right[N - i]);
    }
    // one full circle
    REP(i, N + 1){
        ll temp = 0;
        temp += left[i];
        if(N - i - K >= 0){
            temp += right[N - i - K];
        }
        temp += L;
        ans = min(ans, temp);
    }
    return ans;
}

Compilation message (stderr)

boxes.cpp: In function 'long long int delivery(int, int, int, int*)':
boxes.cpp:64:15: warning: conversion from 'std::vector<int>::size_type' {aka 'long unsigned int'} to 'int' may change value [-Wconversion]
   64 |     N = p.size();
      |         ~~~~~~^~

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