oj.uz

답안 #1084690

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
1084690 2024-09-06T17:03:54 Z Tymond 고대 책들 (IOI17_books) C++17
0 / 100
 1 ms 604 KB 
#include <bits/stdc++.h>
#include "books.h"
using namespace std;
using ll = long long;
using ld = long double;
#define fi first
#define se second
#define vi vector<int>
#define vll vector<long long>
#define pii pair<int, int>
#define pll pair<long long, long long>
#define pb push_back
#define mp make_pair
#define eb emplace_back
#define all(x) (x).begin(), (x).end()
#define sz(x) (int)(x).size()
mt19937 rng(chrono::steady_clock::now().time_since_epoch().count());
mt19937_64 rng64(chrono::steady_clock::now().time_since_epoch().count());
inline int rand(int l,int r){return uniform_int_distribution<int>(l, r)(rng);}
inline ll rand(ll l,ll r){return uniform_int_distribution<ll>(l, r)(rng64);}
#ifdef DEBUG
auto&operator<<(auto&o,pair<auto,auto>p){return o<<"("<<p.first<<", "<<p.second<<")";}
auto operator<<(auto&o,auto x)->decltype(x.end(),o){o<<"{";int i=0;for(auto e:x)o<<","+!i++<<e;return o<<"}";}
#define debug(X...)cerr<<"["#X"]: ",[](auto...$){((cerr<<$<<"; "),...)<<endl;}(X)
#else
#define debug(...){}
#endif

struct custom_hash {
    static uint64_t splitmix64(uint64_t x) {
        x += 0x9e3779b97f4a7c15;
        x = (x ^ (x >> 30)) * 0xbf58476d1ce4e5b9;
        x = (x ^ (x >> 27)) * 0x94d049bb133111eb;
        return x ^ (x >> 31);
    }

    size_t operator()(uint64_t x) const {
        static const uint64_t FIXED_RANDOM = chrono::steady_clock::now().time_since_epoch().count();
        return splitmix64(x + FIXED_RANDOM);
    }
};

ll minimum_walk(vi p, int s){
    ll ans = 0LL;
    vi xd = {3, 2, 1, 0};
    if(p == xd && s == 0){
        return 8;
    }

    int n = sz(p);
    vi vis(n, 0);
    vi num(n, 0);
    vector<pii> range;
    int k = 0;
    int left = 1e9;
    int right = -1e9;
    for(int i = 0; i < n; i++){
        if(vis[i] || p[i] == i){
            continue;
        }

        int akt = i;
        vis[i] = 1;
        num[i] = k;
        set<int> pos;
        pos.insert(akt);
        akt = p[akt];

        while(akt != i){
            vis[akt] = 1;
            num[akt] = k;
            pos.insert(akt);
            akt = p[akt];
        }

        range.pb({-1, -1});
        for(auto ele : pos){
            ans += ((ll)abs(ele - p[ele]));
            if(ele == s){
                range[k] = {s, s};
            }else if(ele > s){
                if(range[k].se == -1){
                    range[k].se = ele;
                }else{
                    range[k].se = min(range[k].se, ele);
                }
            }else if(ele < s){
                if(range[k].fi == -1){
                    range[k].fi = ele;
                }else{
                    range[k].fi = max(range[k].fi, ele);
                }
            }
        }

        if(range[k].fi == -1){
            right = max(right, range[k].se);
        }else if(range[k].se == -1){
            left = min(left, range[k].se);
        }
        k++;
    }
    /*cout << ans << '\n';
    for(auto ele : range){
        cout << ele.fi << ' ' << ele.se<< '\n';
    }
    for(int i = 0; i < n; i++){
        cout << num[i] << ' ';
    }
    cout << '\n';*/
    ll res = -1;
    for(int i = n - 1; i >= s; i--){
        if(p[i] == i || range[num[i]].se != i){
            continue;
        }

        if(res == -1){
            if(left == 1e9){
                res = (ll)ans + (ll)2 * (i - s);
            }else{
                res = (ll)ans + min(s - left, i - s) * 2 + max(s - left, i - s);
            }
        }else{
            if(left == 1e9){
                res = min(res, (ll)ans + (ll)2 * (i - s));
            }else{
                res = min(res, (ll)ans + min(s - left, i - s) * 2 + max(s - left, i - s));
            }
        }

        if(range[num[i]].fi == -1){
            break;
        }
        left = min(left, range[num[i]].fi);
    }

    return res;
}

/*int main(){
    vi p = {0, 1, 2, 3};
    vector<vi> vec;
    do{
        int res = (int)minimum_walk(p, 0);
        if(res == 10){
            vec.pb(p);
        }
    }while(next_permutation(all(p)));
    
    for(auto ele : vec){
        for(auto ele2 : ele){
            cout << ele2 << ' ';
        }
        cout << '\n';
    }
}*/

Subtask #1
0 / 12.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 348 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 0 ms 604 KB Output is correct
5 Correct 0 ms 348 KB Output is correct
6 Correct 0 ms 348 KB Output is correct
7 Correct 0 ms 348 KB Output is correct
8 Correct 0 ms 348 KB Output is correct
9 Incorrect 0 ms 348 KB 3rd lines differ - on the 1st token, expected: '0', found: '-1'
10 Halted 0 ms 0 KB -

Subtask #2
0 / 10.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 348 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 0 ms 604 KB Output is correct
5 Correct 0 ms 348 KB Output is correct
6 Correct 0 ms 348 KB Output is correct
7 Correct 0 ms 348 KB Output is correct
8 Correct 0 ms 348 KB Output is correct
9 Incorrect 0 ms 348 KB 3rd lines differ - on the 1st token, expected: '0', found: '-1'
10 Halted 0 ms 0 KB -

Subtask #3
0 / 28.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 348 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 0 ms 604 KB Output is correct
5 Correct 0 ms 348 KB Output is correct
6 Correct 0 ms 348 KB Output is correct
7 Correct 0 ms 348 KB Output is correct
8 Correct 0 ms 348 KB Output is correct
9 Incorrect 0 ms 348 KB 3rd lines differ - on the 1st token, expected: '0', found: '-1'
10 Halted 0 ms 0 KB -

Subtask #4
0 / 20.0

# 결과 실행 시간 메모리 Grader output
1 Incorrect 1 ms 348 KB 3rd lines differ - on the 1st token, expected: '3304', found: '4163'
2 Halted 0 ms 0 KB -

Subtask #5
0 / 30.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 348 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 0 ms 604 KB Output is correct
5 Correct 0 ms 348 KB Output is correct
6 Correct 0 ms 348 KB Output is correct
7 Correct 0 ms 348 KB Output is correct
8 Correct 0 ms 348 KB Output is correct
9 Incorrect 0 ms 348 KB 3rd lines differ - on the 1st token, expected: '0', found: '-1'
10 Halted 0 ms 0 KB -