제출 #1082388

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
1082388		steveonalex	Longest beautiful sequence (IZhO17_subsequence)	C++17	0 / 100	38 ms	90704 KiB

subsequence

#include <bits/stdc++.h>
 
using namespace std;
 
typedef long long ll;
typedef unsigned long long ull;
 
#define MASK(i) (1LL << (i))
#define GETBIT(mask, i) (((mask) >> (i)) & 1)
#define ALL(v) (v).begin(), (v).end()
#define block_of_code if(true)
 
ll max(ll a, ll b){return (a > b) ? a : b;}
ll min(ll a, ll b){return (a < b) ? a : b;}
ll gcd(ll a, ll b){return __gcd(a, b);}
ll lcm(ll a, ll b){return a / gcd(a, b) * b;}
 
ll LASTBIT(ll mask){return (mask) & (-mask);}
int pop_cnt(ll mask){return __builtin_popcountll(mask);}
int ctz(ull mask){return __builtin_ctzll(mask);}
int logOf(ull mask){return 63 - __builtin_clzll(mask);}
 
mt19937_64 rng(chrono::high_resolution_clock::now().time_since_epoch().count());
ll rngesus(ll l, ll r){return l + (ull) rng() % (r - l + 1);}
double rngesus_d(double l, double r){
    double cur = rngesus(0, MASK(60) - 1);
    cur /= MASK(60) - 1;
    return l + cur * (r - l);
}
 
template <class T1, class T2>
    bool maximize(T1 &a, T2 b){
        if (a < b) {a = b; return true;}
        return false;
    }
 
template <class T1, class T2>
    bool minimize(T1 &a, T2 b){
        if (a > b) {a = b; return true;}
        return false;
    }
 
template <class T>
    void printArr(T container, string separator = " ", string finish = "\n", ostream &out = cout){
        for(auto item: container) out << item << separator;
        out << finish;
    }
 
template <class T>
    void remove_dup(vector<T> &a){
        sort(ALL(a));
        a.resize(unique(ALL(a)) - a.begin());
    }

const int N = 10;
pair<int, int> ma[MASK(N)][MASK(N)][N+1];

int main(void){
    ios::sync_with_stdio(0);cin.tie(0); cout.tie(0);
    clock_t start = clock();

    int n; cin >> n;
    vector<int> a(n), k(n);
    for(int i = 0; i<n; ++i) cin >> a[i];
    for(int j = 0; j<n; ++j) cin >> k[j];

    for(int i = 0; i<MASK(N); ++i) for(int j = 0; j < MASK(N); ++j) for(int k = 0; k<=N; ++k)
        ma[i][j][k] = {-1, -1};

    vector<pair<int,int>> dp(n, {0, -1});
    for(int i = 0; i<n; ++i){
        int first_half = a[i] % MASK(N), second_half = a[i] / MASK(N);
        for(int mask = 0; mask < MASK(N); ++mask){
            int cnt = pop_cnt(mask & first_half);
            if (cnt <= k[i]) 
                maximize(dp[i], ma[mask][second_half][k[i] - cnt]);
        }
        dp[i].first++;
        for(int mask = 0; mask < MASK(N); ++mask){
            maximize(ma[first_half][mask][pop_cnt(second_half & mask)], make_pair(dp[i].first, i));
        }
    }

    int u = max_element(ALL(dp)) - dp.begin();

    int step = dp[u].first;
    cout << step << "\n";
    vector<int> ans;
    while(u >= 0){
        ans.push_back(u+1);
        u = dp[u].second;
    }

    reverse(ALL(ans));
    printArr(ans);

    if (ans.size() != step) exit(1);
    for(int i = 1; i<ans.size(); ++i) if (pop_cnt(a[ans[i-1]] & a[ans[i]]) == k[ans[i]])
        exit(2);

    cerr << "Time elapsed: " << clock() - start << " ms\n";
    return 0;
}

컴파일 시 표준 에러 (stderr) 메시지

subsequence.cpp: In function 'int main()':
subsequence.cpp:97:20: warning: comparison of integer expressions of different signedness: 'std::vector<int>::size_type' {aka 'long unsigned int'} and 'int' [-Wsign-compare]
   97 |     if (ans.size() != step) exit(1);
      |         ~~~~~~~~~~~^~~~~~~
subsequence.cpp:98:21: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   98 |     for(int i = 1; i<ans.size(); ++i) if (pop_cnt(a[ans[i-1]] & a[ans[i]]) == k[ans[i]])
      |                    ~^~~~~~~~~~~

• Subtask 1: 0 / 7
• Subtask 2: 0 / 16
• Subtask 3: 0 / 17
• Subtask 4: 0 / 60