oj.uz

Submission #46718

# Submission time Handle Problem Language Result Execution time Memory
46718 2018-04-22T15:50:22 Z qoo2p5 Rope (JOI17_rope) C++17
0 / 100
 113 ms 91132 KB 
#include <bits/stdc++.h>

using namespace std;

typedef long long ll;

const int INF = (int) 1e9 + 1e6 + 123;
const ll LINF = (ll) 1e18 + 1e9 + 123;

#define rep(i, s, t) for (auto i = (s); i < (t); ++(i))
#define per(i, s, t) for (auto i = (s); i >= (t); --(i))
#define all(x) (x).begin(), (x).end()
#define sz(x) ((int)(x).size())
#define mp make_pair
#define pb push_back

bool mini(auto &x, const auto &y) {
    if (y < x) {
        x = y;
        return 1;
    }
    return 0;
}

bool maxi(auto &x, const auto &y) {
    if (y > x) {
        x = y;
        return 1;
    }
    return 0;
}

void run();

int main() {
    ios::sync_with_stdio(0);
    cin.tie(0);
    cout.tie(0);
    run();
    return 0;
}

const int N = 1 << 20;

int n, m;
int a[N];
int tree[2 * N];
int cnt_full[N];
vector<int> match[N];
int bonus[N];

void clr() {
    memset(bonus, 0, sizeof bonus);
    memset(tree, 0, sizeof tree);
    memset(cnt_full, 0, sizeof cnt_full);
    rep(i, 0, N) {
        match[i].clear();
    }
}

void add(int i, int tl, int tr, int ind, int val) {
    if (tl == tr - 1) {
        tree[i] += val;
        return;
    }
    int tm = (tl + tr) / 2;
    if (ind < tm) add(2 * i + 1, tl, tm, ind, val);
    else add(2 * i + 2, tm, tr, ind, val);
    tree[i] = max(tree[2 * i + 1], tree[2 * i + 2]);
}

void add(int ind, int val) {
    add(0, 0, N, ind, val);
}

int get(int i, int tl, int tr, int l, int r) {
    if (tl >= r || tr <= l) {
        return -INF;
    }
    if (l <= tl && tr <= r) {
        return tree[i];
    }
    int tm = (tl + tr) / 2;
    return max(get(2 * i + 1, tl, tm, l, r), get(2 * i + 2, tm, tr, l, r));
}

int get(int l, int r) {
    return get(0, 0, N, l, r + 1);
}

int ans[N];

void run() {
    cin >> n >> m;
    if (m == 1) {
        cout << "0\n";
        return;
    }
    rep(i, 0, n) {
        cin >> a[i];
        a[i]--;
    }
    rep(i, 0, N) {
        ans[i] = INF;
    }
    
    rep(odd_l, 0, 2) {
        rep(odd_r, 0, 2) {
            if ((odd_l + odd_r) % 2 != n % 2) {
                continue;
            }
            
            rep(who_l, 0, 2) {
                rep(who_r, 0, 2) {
                    clr();
                    
                    if (odd_l) {
                        if (who_l) {
                            bonus[a[0]]++;
                        } else {
                            add(a[0], 1);
                        }
                    }
                    if (odd_r) {
                        if (who_r) {
                            bonus[a[n - 1]]++;
                        } else {
                            add(a[n - 1], 1);
                        }
                    }
                    
                    for (int i = odd_l; i < n - odd_r; i += 2) {
                        if (a[i] != a[i + 1]) {
                            match[a[i]].pb(a[i + 1]);
                            match[a[i + 1]].pb(a[i]);
                        } else {
                            cnt_full[a[i]]++;
                        }
                    }
                    
                    rep(i, 0, m) {
                        for (int j : match[i]) {
                            add(i, 1);
                        }
                        add(i, 2 * cnt_full[i]);
                    }
                    
                    rep(i, 0, m) {
                        int we = bonus[i] + cnt_full[i] * 2;
                        int simple = 0;
                        for (int j : match[i]) {
                            add(j, -1);
                            we++;
                            simple++;
                        }
                        
                        int other = max(get(0, i - 1), get(i + 1, m - 1));
                        assert(other >= 0);
                        
                        if (other == 0) {
                            if (simple > 0) {
                                we--;
                                other++;
                            } else if (bonus[i] > 0) {
                                we--;
                                other++;
                            } else {
                                assert(false);
                            }
                        }
                        
                        mini(ans[i], n - (we + other));
                        
                        for (int j : match[i]) {
                            add(j, 1);
                        }
                    }
                }
            }
        }
    }
    
    rep(i, 0, m) {
        cout << ans[i] << "\n";
    }
}

Compilation message

rope.cpp: In function 'void run()':
rope.cpp:142:34: warning: unused variable 'j' [-Wunused-variable]
                         for (int j : match[i]) {
                                  ^

Subtask #1
0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 83 ms 45432 KB Output is correct
2 Correct 86 ms 45576 KB Output is correct
3 Correct 83 ms 45592 KB Output is correct
4 Correct 83 ms 45796 KB Output is correct
5 Correct 87 ms 45796 KB Output is correct
6 Correct 81 ms 45796 KB Output is correct
7 Correct 85 ms 45796 KB Output is correct
8 Correct 84 ms 45796 KB Output is correct
9 Correct 88 ms 45796 KB Output is correct
10 Correct 84 ms 45796 KB Output is correct
11 Correct 87 ms 45796 KB Output is correct
12 Correct 87 ms 45796 KB Output is correct
13 Correct 85 ms 45796 KB Output is correct
14 Correct 84 ms 45796 KB Output is correct
15 Correct 85 ms 45796 KB Output is correct
16 Correct 85 ms 45804 KB Output is correct
17 Correct 81 ms 45804 KB Output is correct
18 Correct 84 ms 45804 KB Output is correct
19 Correct 88 ms 45804 KB Output is correct
20 Correct 88 ms 45848 KB Output is correct
21 Runtime error 113 ms 91132 KB Execution killed with signal 11 (could be triggered by violating memory limits)
22 Halted 0 ms 0 KB -

Subtask #2
0 / 30.0

# Verdict Execution time Memory Grader output
1 Correct 83 ms 45432 KB Output is correct
2 Correct 86 ms 45576 KB Output is correct
3 Correct 83 ms 45592 KB Output is correct
4 Correct 83 ms 45796 KB Output is correct
5 Correct 87 ms 45796 KB Output is correct
6 Correct 81 ms 45796 KB Output is correct
7 Correct 85 ms 45796 KB Output is correct
8 Correct 84 ms 45796 KB Output is correct
9 Correct 88 ms 45796 KB Output is correct
10 Correct 84 ms 45796 KB Output is correct
11 Correct 87 ms 45796 KB Output is correct
12 Correct 87 ms 45796 KB Output is correct
13 Correct 85 ms 45796 KB Output is correct
14 Correct 84 ms 45796 KB Output is correct
15 Correct 85 ms 45796 KB Output is correct
16 Correct 85 ms 45804 KB Output is correct
17 Correct 81 ms 45804 KB Output is correct
18 Correct 84 ms 45804 KB Output is correct
19 Correct 88 ms 45804 KB Output is correct
20 Correct 88 ms 45848 KB Output is correct
21 Runtime error 113 ms 91132 KB Execution killed with signal 11 (could be triggered by violating memory limits)
22 Halted 0 ms 0 KB -

Subtask #3
0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 83 ms 45432 KB Output is correct
2 Correct 86 ms 45576 KB Output is correct
3 Correct 83 ms 45592 KB Output is correct
4 Correct 83 ms 45796 KB Output is correct
5 Correct 87 ms 45796 KB Output is correct
6 Correct 81 ms 45796 KB Output is correct
7 Correct 85 ms 45796 KB Output is correct
8 Correct 84 ms 45796 KB Output is correct
9 Correct 88 ms 45796 KB Output is correct
10 Correct 84 ms 45796 KB Output is correct
11 Correct 87 ms 45796 KB Output is correct
12 Correct 87 ms 45796 KB Output is correct
13 Correct 85 ms 45796 KB Output is correct
14 Correct 84 ms 45796 KB Output is correct
15 Correct 85 ms 45796 KB Output is correct
16 Correct 85 ms 45804 KB Output is correct
17 Correct 81 ms 45804 KB Output is correct
18 Correct 84 ms 45804 KB Output is correct
19 Correct 88 ms 45804 KB Output is correct
20 Correct 88 ms 45848 KB Output is correct
21 Runtime error 113 ms 91132 KB Execution killed with signal 11 (could be triggered by violating memory limits)
22 Halted 0 ms 0 KB -

Subtask #4
0 / 25.0

# Verdict Execution time Memory Grader output
1 Correct 83 ms 45432 KB Output is correct
2 Correct 86 ms 45576 KB Output is correct
3 Correct 83 ms 45592 KB Output is correct
4 Correct 83 ms 45796 KB Output is correct
5 Correct 87 ms 45796 KB Output is correct
6 Correct 81 ms 45796 KB Output is correct
7 Correct 85 ms 45796 KB Output is correct
8 Correct 84 ms 45796 KB Output is correct
9 Correct 88 ms 45796 KB Output is correct
10 Correct 84 ms 45796 KB Output is correct
11 Correct 87 ms 45796 KB Output is correct
12 Correct 87 ms 45796 KB Output is correct
13 Correct 85 ms 45796 KB Output is correct
14 Correct 84 ms 45796 KB Output is correct
15 Correct 85 ms 45796 KB Output is correct
16 Correct 85 ms 45804 KB Output is correct
17 Correct 81 ms 45804 KB Output is correct
18 Correct 84 ms 45804 KB Output is correct
19 Correct 88 ms 45804 KB Output is correct
20 Correct 88 ms 45848 KB Output is correct
21 Runtime error 113 ms 91132 KB Execution killed with signal 11 (could be triggered by violating memory limits)
22 Halted 0 ms 0 KB -

Subtask #5
0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 83 ms 45432 KB Output is correct
2 Correct 86 ms 45576 KB Output is correct
3 Correct 83 ms 45592 KB Output is correct
4 Correct 83 ms 45796 KB Output is correct
5 Correct 87 ms 45796 KB Output is correct
6 Correct 81 ms 45796 KB Output is correct
7 Correct 85 ms 45796 KB Output is correct
8 Correct 84 ms 45796 KB Output is correct
9 Correct 88 ms 45796 KB Output is correct
10 Correct 84 ms 45796 KB Output is correct
11 Correct 87 ms 45796 KB Output is correct
12 Correct 87 ms 45796 KB Output is correct
13 Correct 85 ms 45796 KB Output is correct
14 Correct 84 ms 45796 KB Output is correct
15 Correct 85 ms 45796 KB Output is correct
16 Correct 85 ms 45804 KB Output is correct
17 Correct 81 ms 45804 KB Output is correct
18 Correct 84 ms 45804 KB Output is correct
19 Correct 88 ms 45804 KB Output is correct
20 Correct 88 ms 45848 KB Output is correct
21 Runtime error 113 ms 91132 KB Execution killed with signal 11 (could be triggered by violating memory limits)
22 Halted 0 ms 0 KB -