oj.uz

Submission #970430

# Submission time Handle Problem Language Result Execution time Memory
970430 2024-04-26T14:04:26 Z steveonalex Permutation (APIO22_perm) C++17
71.2154 / 100
 11 ms 1520 KB 
#include <bits/stdc++.h>
#include "perm.h"
 
using namespace std;
 
typedef long long ll;
typedef unsigned long long ull;
 
#define ALL(v) (v).begin(), (v).end()
#define MASK(i) (1LL << (i))
#define GETBIT(mask, i) (((mask) >> (i)) & 1)
 
// mt19937_64 rng(chrono::steady_clock::now().time_since_epoch().count());
mt19937_64 rng(1);
ll rngesus(ll l, ll r){return ((ull) rng()) % (r - l + 1) + l;}
 
ll max(ll a, ll b){return (a > b) ? a : b;}
ll min(ll a, ll b){return (a < b) ? a : b;}
 
ll LASTBIT(ll mask){return mask & (-mask);}
ll pop_cnt(ll mask){return __builtin_popcountll(mask);}
ll ctz(ll mask){return __builtin_ctzll(mask);}
ll clz(ll mask){return __builtin_clzll(mask);}
ll logOf(ll mask){return 63 - clz(mask);}
 
template <class T1, class T2>
    bool minimize(T1 &a, T2 b){
        if (a > b){a = b; return true;}
        return false;
    }
template <class T1, class T2>
    bool maximize(T1 &a, T2 b){
        if (a < b){a = b; return true;}
        return false;
    }
template <class T>
    void printArr(T& a, string separator = " ", string finish = "\n", ostream& out = cout){
        for(auto i: a) out << i << separator;
        out << finish;
    }
template <class T>
    void remove_dup(vector<T> &a){
        sort(ALL(a));
        a.resize(unique(ALL(a)) - a.begin());
    }

vector<int> construct_permutation(ll k){
    k--;
    vector<int> ans;
    for(int j = 60; j>=0; --j) while (k >= MASK(j+1) - 1){
        k -= MASK(j+1) - 1;
        for(int &i: ans) i += j + 1;
        for(int i = 0; i<=j; ++i) ans.push_back(i);
    }
    return ans;
}

ll count_i(vector<int> perm){
    int n = perm.size();
    perm.insert(perm.begin(), -1);
    vector<ll> dp(n+1); dp[0] = 1;
    ll sum = 1;
    for(int i = 1; i<=n; ++i){
        for(int j = 0; j<i; ++j) if (perm[j] < perm[i]) dp[i] += dp[j];
        sum += dp[i];
    }
    return sum;
}

// int main(void){
//     ios::sync_with_stdio(0); cin.tie(0); cout.tie(0);

//     for(int i = 2; i<=100; ++i){
//         vector<int> perm = construct_permutation(i);
//         if (count_i(perm) != i){
//             cout << i << " " << count_i(perm) << "\n";
//             printArr(perm);
//             break;
//         }
//     }

//     return 0;
// }

Subtask #1
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 344 KB Output is correct
2 Correct 1 ms 360 KB Output is correct

Subtask #2
61.215384618 / 90.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 344 KB Output is correct
2 Correct 1 ms 360 KB Output is correct
3 Partially correct 1 ms 348 KB Partially correct
4 Partially correct 1 ms 348 KB Partially correct
5 Partially correct 4 ms 604 KB Partially correct
6 Partially correct 4 ms 600 KB Partially correct
7 Partially correct 7 ms 860 KB Partially correct
8 Partially correct 10 ms 1116 KB Partially correct
9 Correct 1 ms 344 KB Output is correct
10 Partially correct 11 ms 1520 KB Partially correct
11 Partially correct 9 ms 1164 KB Partially correct
12 Partially correct 8 ms 860 KB Partially correct
13 Partially correct 9 ms 1116 KB Partially correct