oj.uz

Submission #590191

# Submission time Handle Problem Language Result Execution time Memory
590191 2022-07-05T16:14:02 Z piOOE The Potion of Great Power (CEOI20_potion) C++17
100 / 100
 1813 ms 33420 KB 
#include <bits/stdc++.h>

using namespace std;

const int maxN = 100000, maxU = 200000, INF = 1000000000, BL = 300;

int a[maxU], b[maxU], h[maxN], n, u;

bool cmp(int i, int j) {
    return (h[i] != h[j] ? h[i] < h[j] : i < j);
}

vector<int> mrg(vector<int>& A, vector<int>& B) {
    vector<int> C(A.size() + B.size()), ans;
    merge(A.begin(), A.end(), B.begin(), B.end(), C.begin(), cmp);
    for (int i = 0; i < C.size();) {
        int j = i;
        while (j < C.size() && C[j] == C[i]) {
            j += 1;
        }
        if ((j - i) & 1) {
            ans.push_back(C[i]);
        }
        i = j;
    }
    return ans;
}

vector<vector<int>> g[maxN];

vector<int> temp[maxN];

vector<int> ti[maxN];
vector<pair<int, int>> c[maxN];

void init(int N, int D, int H[]) {
    n = N;
    memcpy(h, H, sizeof(h[0]) * n);
}

void curseChanges(int U, int A[], int B[]) {
    u = U;
    vector<int> empt;
    memcpy(a, A, sizeof(a[0]) * u), memcpy(b, B, sizeof(b[0]) * u);
    set<pair<int, int>> adj;
    for (int i = 0; i < u; ++i) {
        if (a[i] > b[i]) {
            swap(a[i], b[i]);
        }
        auto upd = [&](int x, int y) {
            temp[x].push_back(y);
            c[x].emplace_back(y, i + 1);
            if (c[x].size() % BL == 0) {
                sort(temp[x].begin(), temp[x].end(), cmp);
                g[x].push_back(mrg(g[x].empty() ? empt : g[x].back(), temp[x]));
                ti[x].push_back(i + 1);
                temp[x].clear();
            }
        };
        upd(a[i], b[i]), upd(b[i], a[i]);
        if (adj.count({a[i], b[i]})) {
            adj.erase({a[i], b[i]});
        } else {
            adj.insert({a[i], b[i]});
        }
    }
}

vector<int> get(int x, int v) {
    int it = upper_bound(ti[x].begin(), ti[x].end(), v) - ti[x].begin() - 1, t = 0;
    vector<int> ans;
    if (it > -1) {
        ans = g[x][it];
        t = ti[x][it] + 1;
    }
    it = lower_bound(c[x].begin(), c[x].end(), make_pair(-1, t), [](pair<int, int> a, pair<int, int> b) {
        return a.second < b.second;
    }) - c[x].begin();
    vector<int> nw;
    for (; it < int(c[x].size()) && c[x][it].second <= v; ++it) {
        auto [y, tt] = c[x][it];
        nw.push_back(y);
    }
    sort(nw.begin(), nw.end(), cmp);
    return mrg(ans, nw);
}

int question(int x, int y, int v) {
    int ans = INF;
    vector<int> f = get(x, v), s = get(y, v);
    int pnt = 0;
    for (int to: f) {
        while (pnt < s.size() && h[s[pnt]] < h[to]) {
            pnt += 1;
        }
        if (pnt < s.size()) {
            ans = min(ans, h[s[pnt]] - h[to]);
        }
        if (pnt > 0) {
            ans = min(ans, h[to] - h[s[pnt - 1]]);
        }
    }
    return ans;
}

Compilation message

potion.cpp: In function 'std::vector<int> mrg(std::vector<int>&, std::vector<int>&)':
potion.cpp:16:23: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   16 |     for (int i = 0; i < C.size();) {
      |                     ~~^~~~~~~~~~
potion.cpp:18:18: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   18 |         while (j < C.size() && C[j] == C[i]) {
      |                ~~^~~~~~~~~~
potion.cpp: In function 'int question(int, int, int)':
potion.cpp:93:20: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   93 |         while (pnt < s.size() && h[s[pnt]] < h[to]) {
      |                ~~~~^~~~~~~~~~
potion.cpp:96:17: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   96 |         if (pnt < s.size()) {
      |             ~~~~^~~~~~~~~~

Subtask #1
0.0 / 0.0

# Verdict Execution time Memory Grader output
1 Correct 6 ms 9680 KB Output is correct

Subtask #2
17.0 / 17.0

# Verdict Execution time Memory Grader output
1 Correct 7 ms 9808 KB Output is correct
2 Correct 7 ms 9808 KB Output is correct
3 Correct 6 ms 9808 KB Output is correct
4 Correct 22 ms 10660 KB Output is correct

Subtask #3
14.0 / 14.0

# Verdict Execution time Memory Grader output
1 Correct 432 ms 33344 KB Output is correct
2 Correct 402 ms 33420 KB Output is correct
3 Correct 864 ms 17820 KB Output is correct
4 Correct 1285 ms 24644 KB Output is correct
5 Correct 536 ms 30088 KB Output is correct
6 Correct 1702 ms 25496 KB Output is correct
7 Correct 1636 ms 25636 KB Output is correct

Subtask #4
18.0 / 18.0

# Verdict Execution time Memory Grader output
1 Correct 442 ms 33332 KB Output is correct
2 Correct 1381 ms 21068 KB Output is correct
3 Correct 1310 ms 25396 KB Output is correct
4 Correct 1496 ms 25628 KB Output is correct
5 Correct 581 ms 33128 KB Output is correct
6 Correct 1632 ms 25636 KB Output is correct

Subtask #5
21.0 / 21.0

# Verdict Execution time Memory Grader output
1 Correct 53 ms 10960 KB Output is correct
2 Correct 191 ms 10320 KB Output is correct
3 Correct 815 ms 10192 KB Output is correct
4 Correct 987 ms 10856 KB Output is correct
5 Correct 782 ms 10996 KB Output is correct
6 Correct 134 ms 10636 KB Output is correct
7 Correct 1155 ms 10372 KB Output is correct

Subtask #6
30.0 / 30.0

# Verdict Execution time Memory Grader output
1 Correct 6 ms 9680 KB Output is correct
2 Correct 7 ms 9808 KB Output is correct
3 Correct 7 ms 9808 KB Output is correct
4 Correct 6 ms 9808 KB Output is correct
5 Correct 22 ms 10660 KB Output is correct
6 Correct 432 ms 33344 KB Output is correct
7 Correct 402 ms 33420 KB Output is correct
8 Correct 864 ms 17820 KB Output is correct
9 Correct 1285 ms 24644 KB Output is correct
10 Correct 536 ms 30088 KB Output is correct
11 Correct 1702 ms 25496 KB Output is correct
12 Correct 1636 ms 25636 KB Output is correct
13 Correct 442 ms 33332 KB Output is correct
14 Correct 1381 ms 21068 KB Output is correct
15 Correct 1310 ms 25396 KB Output is correct
16 Correct 1496 ms 25628 KB Output is correct
17 Correct 581 ms 33128 KB Output is correct
18 Correct 1632 ms 25636 KB Output is correct
19 Correct 53 ms 10960 KB Output is correct
20 Correct 191 ms 10320 KB Output is correct
21 Correct 815 ms 10192 KB Output is correct
22 Correct 987 ms 10856 KB Output is correct
23 Correct 782 ms 10996 KB Output is correct
24 Correct 134 ms 10636 KB Output is correct
25 Correct 1155 ms 10372 KB Output is correct
26 Correct 1167 ms 21064 KB Output is correct
27 Correct 1485 ms 25396 KB Output is correct
28 Correct 1304 ms 30408 KB Output is correct
29 Correct 1335 ms 24568 KB Output is correct
30 Correct 1813 ms 25640 KB Output is correct
31 Correct 1716 ms 20968 KB Output is correct
32 Correct 1732 ms 25632 KB Output is correct