oj.uz

Submission #1002507

# Submission time Handle Problem Language Result Execution time Memory
1002507 2024-06-19T15:36:51 Z yoav_s The Potion of Great Power (CEOI20_potion) C++17
70 / 100
 3000 ms 261052 KB 
#include <bits/stdc++.h>

using namespace std;

typedef int ll;
typedef vector<ll> v;
typedef vector<v> vv;
typedef vector<vv> vvv;
typedef vector<bool> vb;
typedef vector<vb> vvb;
typedef vector<vvb> vvvb;
typedef pair<ll,ll> p;
typedef vector<p> vp;
typedef vector<vp> vvp;
typedef vector<vvp> vvvp;
typedef pair<ll, p> tri;
typedef vector<tri> vtri;
typedef vector<vtri> vvtri;
typedef vector<vvtri> vvvtri;

#define f first
#define s second
#define pb push_back
#define eb emplace_back
#define all(v) (v).begin(),(v).end()

const ll INF = 1e9;
const ll mod = 1e9 + 7;
struct Node
{
    Node *l, *r;
    ll val;
    ll left, right;
    Node()
    {
        l = r = NULL;
        val = left = right = 0;
    }
    Node(ll size, ll offset)
    {
        ll act = pow(2, ceil(log2(size)));
        left = offset; right = offset + act - 1;
        val = 0;
        if (act > 1)
        {
            l = new Node(act / 2, offset);
            r = new Node(act / 2, offset + act / 2);
        }
    }
    Node(ll size) : Node(size, 0) {}
    Node(Node *l, Node *r, ll val, ll left, ll right)
    {
        this->l = l;
        this->r = r;
        this->val = val;
        this->left = left;
        this->right = right;
    }
    Node(Node *l, Node *r)
    {
        this->l = l;
        this->r = r;
        this->val = l->val + r->val;
        this->left = l->left;
        this->right = r->right;
    }
    Node *update(ll index, ll val)
    {
        if (left == right)
        {
            return new Node(NULL, NULL, val, index, index);
        }
        ll mid = (left + right) / 2;
        Node *curL = l, *curR = r;
        if (index <= mid)
        {
            curL = l->update(index, val);
        }
        else
        {
            curR = r->update(index, val);
        }
        return new Node(curL, curR);
    }
    void toList(v &arr)
    {
        if (val == 0) return;
        if (left == right)
        {
            arr.pb(left);
            return;
        }
        l->toList(arr);
        r->toList(arr);
    }
};

ll N;
ll D;
v H;
ll U;
vv sometimesNeighbors;
vp edges;
vector<vector<pair<ll, Node*>>> trees;
vector<map<ll, ll>> neighborShrink;

void init(int gN, int gD, int gH[]) {
    N = gN;
    D = gD;
    for (ll i= 0 ; i < N; i++) H.pb(gH[i]);
}

void curseChanges(int gU, int A[], int B[]) {
    U = gU;
    sometimesNeighbors.resize(N);
    for (ll i = 0; i < U; i++)
    {
        edges.eb(A[i], B[i]);
        sometimesNeighbors[A[i]].pb(B[i]);
        sometimesNeighbors[B[i]].pb(A[i]);
    }
    trees.resize(N);
    vvb areNeighbors(N);
    neighborShrink.resize(N);
    for (ll i = 0; i < N; i++)
    {
        sort(all(sometimesNeighbors[i]));
        sometimesNeighbors[i].erase(unique(all(sometimesNeighbors[i])),sometimesNeighbors[i].end());
        sort(all(sometimesNeighbors[i]),[](ll i, ll j){return H[i] < H[j];});
        for (ll j = 0; j < sometimesNeighbors[i].size(); j++)
        {
            neighborShrink[i][sometimesNeighbors[i][j]] = j;
        }
        trees[i].eb(0, new Node(sometimesNeighbors[i].size()));
        areNeighbors[i].resize(sometimesNeighbors[i].size());
    }
    for (ll iter = 0; iter < U; iter++)
    {
        ll j1 = neighborShrink[edges[iter].f][edges[iter].s];
        ll i1 = edges[iter].f;
        ll i2 = edges[iter].s, j2 = neighborShrink[edges[iter].s][edges[iter].f];
        if (areNeighbors[i1][j1])
        {
            areNeighbors[i1][j1] = false;
            areNeighbors[i2][j2] = false;
            trees[i1].eb(iter + 1, trees[i1].back().s->update(j1, 0));
            trees[i2].eb(iter + 1, trees[i2].back().s->update(j2, 0));
        }
        else
        {
            areNeighbors[i1][j1] = true;
            areNeighbors[i2][j2] = true;
            trees[i1].eb(iter + 1, trees[i1].back().s->update(j1, 1));
            trees[i2].eb(iter + 1, trees[i2].back().s->update(j2, 1));
        }
    }
}

int question(int x, int y, int time) {
    auto cmp = [](pair<ll, Node *> x, pair<ll, Node*> y){return x.f < y.f || (x.f == y.f && y.s == NULL);};
    Node *xNeighbors = (*(upper_bound(all(trees[x]), pair<ll, Node*>(time, NULL), cmp) - 1)).s;
    Node *yNeighbors = (*(upper_bound(all(trees[y]), pair<ll, Node*>(time, NULL), cmp) - 1)).s;
    v xNeighborsArr, yNeighborsArr;
    xNeighbors->toList(xNeighborsArr);
    yNeighbors->toList(yNeighborsArr);
    ll i = 0, j = 0;
    ll mini = INF;
    while (i < xNeighborsArr.size() && j < yNeighborsArr.size())
    {
        ll iHeight = H[sometimesNeighbors[x][xNeighborsArr[i]]];
        while (j < (ll)yNeighborsArr.size() - 1 && H[sometimesNeighbors[y][yNeighborsArr[j + 1]]] <= iHeight) j++;
        mini = min(mini, abs(iHeight - H[sometimesNeighbors[y][yNeighborsArr[j]]]));
        if (j < yNeighborsArr.size() - 1) mini = min(mini, abs(iHeight - H[sometimesNeighbors[y][yNeighborsArr[j + 1]]]));
        i++;
    }
    return mini;
}
/*
int main() {
  int N, D, U, Q;
  std::ios::sync_with_stdio(false); std::cin.tie(NULL);
  std::cin >> N >> D >> U >> Q;

  int *F = new int[N];
  for (int i=0; i<N; i++)
    std::cin >> F[i];
  init(N, D, F);

  int *A = new int[U], *B = new int[U];
  for (int i=0; i<U; i++) {
    std::cin >> A[i] >> B[i];
  }
  curseChanges(U, A, B);

  bool correct = true;
  for (int i=0; i<Q; i++) {
    int X,Y,V,CorrectAnswer;
    std::cin >> X >> Y >> V >> CorrectAnswer;
    int YourAnswer = question(X,Y,V);
    if (YourAnswer != CorrectAnswer) {
      std::cout << "WA! Question: " << i
		<< " (X=" << X << ", Y=" << Y << ", V=" << V << ") "
		<<  "Your answer: " << YourAnswer
                << " Correct Answer: " << CorrectAnswer << std::endl;
      correct = false;
    } else {
      std::cerr << YourAnswer << " - OK" << std::endl;
    }
  }

  if (correct) {
    std::cout << "Correct." << std::endl;
  } else std::cout << "Incorrect." << std::endl;
  return 0;
}
/**/

Compilation message

potion.cpp:216:1: warning: "/*" within comment [-Wcomment]
  216 | /**/
      |  
potion.cpp: In function 'void curseChanges(int, int*, int*)':
potion.cpp:130:26: warning: comparison of integer expressions of different signedness: 'll' {aka 'int'} and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
  130 |         for (ll j = 0; j < sometimesNeighbors[i].size(); j++)
      |                        ~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
potion.cpp: In function 'int question(int, int, int)':
potion.cpp:168:14: warning: comparison of integer expressions of different signedness: 'll' {aka 'int'} and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
  168 |     while (i < xNeighborsArr.size() && j < yNeighborsArr.size())
      |            ~~^~~~~~~~~~~~~~~~~~~~~~
potion.cpp:168:42: warning: comparison of integer expressions of different signedness: 'll' {aka 'int'} and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
  168 |     while (i < xNeighborsArr.size() && j < yNeighborsArr.size())
      |                                        ~~^~~~~~~~~~~~~~~~~~~~~~
potion.cpp:173:15: warning: comparison of integer expressions of different signedness: 'll' {aka 'int'} and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
  173 |         if (j < yNeighborsArr.size() - 1) mini = min(mini, abs(iHeight - H[sometimesNeighbors[y][yNeighborsArr[j + 1]]]));
      |             ~~^~~~~~~~~~~~~~~~~~~~~~~~~~

Subtask #1
0.0 / 0.0

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

Subtask #2
17.0 / 17.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 1112 KB Output is correct
2 Correct 2 ms 1112 KB Output is correct
3 Correct 2 ms 1112 KB Output is correct
4 Correct 21 ms 22612 KB Output is correct

Subtask #3
14.0 / 14.0

# Verdict Execution time Memory Grader output
1 Correct 544 ms 167260 KB Output is correct
2 Correct 531 ms 167364 KB Output is correct
3 Correct 230 ms 146528 KB Output is correct
4 Correct 1831 ms 261052 KB Output is correct
5 Correct 944 ms 222728 KB Output is correct
6 Correct 2039 ms 172964 KB Output is correct
7 Correct 647 ms 149212 KB Output is correct

Subtask #4
18.0 / 18.0

# Verdict Execution time Memory Grader output
1 Correct 499 ms 167348 KB Output is correct
2 Correct 2351 ms 167904 KB Output is correct
3 Correct 1665 ms 163852 KB Output is correct
4 Correct 2780 ms 173000 KB Output is correct
5 Correct 617 ms 171204 KB Output is correct
6 Correct 2831 ms 172880 KB Output is correct

Subtask #5
21.0 / 21.0

# Verdict Execution time Memory Grader output
1 Correct 34 ms 8792 KB Output is correct
2 Correct 81 ms 10868 KB Output is correct
3 Correct 96 ms 7768 KB Output is correct
4 Correct 480 ms 10340 KB Output is correct
5 Correct 369 ms 9740 KB Output is correct
6 Correct 90 ms 10328 KB Output is correct
7 Correct 376 ms 8576 KB Output is correct

Subtask #6
0 / 30.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 344 KB Output is correct
2 Correct 3 ms 1112 KB Output is correct
3 Correct 2 ms 1112 KB Output is correct
4 Correct 2 ms 1112 KB Output is correct
5 Correct 21 ms 22612 KB Output is correct
6 Correct 544 ms 167260 KB Output is correct
7 Correct 531 ms 167364 KB Output is correct
8 Correct 230 ms 146528 KB Output is correct
9 Correct 1831 ms 261052 KB Output is correct
10 Correct 944 ms 222728 KB Output is correct
11 Correct 2039 ms 172964 KB Output is correct
12 Correct 647 ms 149212 KB Output is correct
13 Correct 499 ms 167348 KB Output is correct
14 Correct 2351 ms 167904 KB Output is correct
15 Correct 1665 ms 163852 KB Output is correct
16 Correct 2780 ms 173000 KB Output is correct
17 Correct 617 ms 171204 KB Output is correct
18 Correct 2831 ms 172880 KB Output is correct
19 Correct 34 ms 8792 KB Output is correct
20 Correct 81 ms 10868 KB Output is correct
21 Correct 96 ms 7768 KB Output is correct
22 Correct 480 ms 10340 KB Output is correct
23 Correct 369 ms 9740 KB Output is correct
24 Correct 90 ms 10328 KB Output is correct
25 Correct 376 ms 8576 KB Output is correct
26 Correct 920 ms 153932 KB Output is correct
27 Correct 1797 ms 163912 KB Output is correct
28 Correct 1666 ms 181192 KB Output is correct
29 Correct 2204 ms 260544 KB Output is correct
30 Correct 2987 ms 172920 KB Output is correct
31 Execution timed out 3066 ms 168648 KB Time limit exceeded
32 Halted 0 ms 0 KB -