oj.uz

답안 #760249

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
760249 2023-06-17T10:49:03 Z GrindMachine Teams (CEOI11_tea) C++17
0 / 100
 262 ms 35404 KB 
// Om Namah Shivaya
 
#include <bits/stdc++.h>
#include <ext/pb_ds/assoc_container.hpp>
#include <ext/pb_ds/tree_policy.hpp>
 
using namespace std;
using namespace __gnu_pbds;
 
template<typename T> using Tree = tree<T, null_type, less<T>, rb_tree_tag, tree_order_statistics_node_update>;
typedef long long int ll;
typedef long double ld;
typedef pair<int, int> pii;
typedef pair<ll, ll> pll;
 
#define fastio ios_base::sync_with_stdio(false); cin.tie(NULL)
#define pb push_back
#define endl '\n'
#define sz(a) a.size()
#define setbits(x) __builtin_popcountll(x)
#define ff first
#define ss second
#define conts continue
#define ceil2(x, y) ((x + y - 1) / (y))
#define all(a) a.begin(), a.end()
#define rall(a) a.rbegin(), a.rend()
#define yes cout << "Yes" << endl
#define no cout << "No" << endl
 
#define rep(i, n) for(int i = 0; i < n; ++i)
#define rep1(i, n) for(int i = 1; i <= n; ++i)
#define rev(i, s, e) for(int i = s; i >= e; --i)
#define trav(i, a) for(auto &i : a)
 
template<typename T>
void amin(T &a, T b) {
    a = min(a, b);
}
 
template<typename T>
void amax(T &a, T b) {
    a = max(a, b);
}
 
#ifdef LOCAL
#include "debug.h"
#else
#define debug(x) 42
#endif
 
/*
 
 
 
*/
 
const int MOD = 1e9 + 7;
const int N = 1e5 + 5;
const int inf1 = int(1e9) + 5;
const ll inf2 = ll(1e18) + 5;
 
template<typename T>
struct segtree {
    // https://codeforces.com/blog/entry/18051
 
    /*=======================================================*/
 
    struct data {
        int mx,ind;
    };
 
    data neutral = {-inf1,-1};
 
    data merge(data &left, data &right) {
        if(left.mx > right.mx) return left;
        else return right;
    }
 
    void create(int i, T v) {
        tr[i] = {v,i-n};
    }
 
    void modify(int i, T v) {
        tr[i] = {v,i-n};
    }
 
    /*=======================================================*/
 
    int n;
    vector<data> tr;
 
    segtree() {
 
    }
 
    segtree(int siz) {
        init(siz);
    }
 
    void init(int siz) {
        n = siz;
        tr.assign(2 * n, neutral);
    }
 
    void build(vector<T> &a, int siz) {
        rep(i, siz) create(i + n, a[i]);
        rev(i, n - 1, 1) tr[i] = merge(tr[i << 1], tr[i << 1 | 1]);
    }
 
    void pupd(int i, T v) {
        modify(i + n, v);
        for (i = (i + n) >> 1; i; i >>= 1) tr[i] = merge(tr[i << 1], tr[i << 1 | 1]);
    }
 
    data query(int l, int r) {
        data resl = neutral, resr = neutral;
 
        for (l += n, r += n; l <= r; l >>= 1, r >>= 1) {
            if (l & 1) resl = merge(resl, tr[l++]);
            if (!(r & 1)) resr = merge(tr[r--], resr);
        }
 
        return merge(resl, resr);
    }
};
 
void solve(int test_case)
{
    int n; cin >> n;
    vector<int> a(n+5);
    rep1(i,n) cin >> a[i];
 
    vector<pii> b;
    rep1(i,n) b.pb({a[i],i});
 
    sort(all(b));
    b.insert(b.begin(),{0,0});

    vector<int> dp(n+5,-inf1);
    dp[0] = 0;
    vector<int> par(n+5);

    vector<pii> cand;
    cand.pb({0,0});

    rep1(i,n){
        auto [v,ind] = b[i];
        int rx = i-v;
        auto it = upper_bound(all(cand),make_pair(rx+1,-1));

        if(it != cand.begin()){
            it--;
            dp[i] = it->second + 1;
            par[i] = it->first;
        }

        if(dp[i] >= cand.back().ss){
            cand.pb({i,dp[i]});
        }
    }

    cout << dp[n] << endl;
    int ptr = n;

    while(ptr){
        int p = par[ptr];
        vector<int> curr;

        while(ptr != p){
            curr.pb(b[ptr--].ss);
        }

        cout << sz(curr) << " ";
        trav(x,curr){
            cout << x << " ";
        }

        cout << endl;
    }
}
 
int main()
{
    fastio;
 
    int t = 1;
    // cin >> t;
 
    rep1(i, t) {
        solve(i);
    }
 
    return 0;
}

Subtask #1
0 / 10.0

# 결과 실행 시간 메모리 Grader output
1 Correct 0 ms 212 KB Output is correct
2 Correct 1 ms 212 KB Output is correct
3 Incorrect 0 ms 212 KB Output isn't correct
4 Halted 0 ms 0 KB -

Subtask #2
0 / 10.0

# 결과 실행 시간 메모리 Grader output
1 Incorrect 0 ms 212 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #3
0 / 10.0

# 결과 실행 시간 메모리 Grader output
1 Incorrect 1 ms 212 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #4
0 / 10.0

# 결과 실행 시간 메모리 Grader output
1 Incorrect 2 ms 468 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #5
0 / 10.0

# 결과 실행 시간 메모리 Grader output
1 Correct 2 ms 468 KB Output is correct
2 Incorrect 1 ms 468 KB Output isn't correct
3 Halted 0 ms 0 KB -

Subtask #6
0 / 10.0

# 결과 실행 시간 메모리 Grader output
1 Incorrect 19 ms 3280 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #7
0 / 10.0

# 결과 실행 시간 메모리 Grader output
1 Incorrect 22 ms 3576 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #8
0 / 10.0

# 결과 실행 시간 메모리 Grader output
1 Incorrect 178 ms 27240 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #9
0 / 10.0

# 결과 실행 시간 메모리 Grader output
1 Incorrect 262 ms 34936 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #10
0 / 10.0

# 결과 실행 시간 메모리 Grader output
1 Incorrect 246 ms 35404 KB Output isn't correct
2 Halted 0 ms 0 KB -