oj.uz

Submission #643216

# Submission time Handle Problem Language Result Execution time Memory
643216 2022-09-21T14:22:50 Z Vladth11 The Potion of Great Power (CEOI20_potion) C++14
38 / 100
 3000 ms 41680 KB 
#include <iostream>
#include <vector>
#include <set>
#include <unordered_set>
#include <algorithm>

//#define debug(x) cerr << #x << " " << x << "\n"

#pragma GCC optimize("Ofast,unroll-loops")

using namespace std;
typedef long long ll;
typedef pair <int, int> pii;

const int bSize = 100;
const int bits = 18;
const int NMAX = 100000;
const int VMAX = NMAX * 89;

int a[NMAX], n;
int u;

struct BLOCK {
    int time;
    vector <int> v;
};

class DS {
public:
    vector <BLOCK> blocks;
    vector <pii> changes;
    unordered_set <int> vecini;
    void baga(int x, int cand) {
        if(vecini.find(x) != vecini.end()) {
            vecini.erase(x);
            changes.push_back({x, cand});
        } else {
            vecini.insert(x);
            changes.push_back({x, cand});
        }
        if(changes.size() % bSize == 0) {
            BLOCK nou;
            nou.v.clear();
            nou.time = cand;
            for(auto x : vecini) {
                nou.v.push_back(x);
            }
            blocks.push_back(nou);
        }
    }

} ds[NMAX];

void init(int N, int D, int H[]) {
    n = N;
    for(int i = 0; i < N; i++) {
        a[i] = H[i];
    }
}

void curseChanges(int U, int A[], int B[]) {
    u = U;
    for(int i = 0; i < U; i++) {
        int timp = i + 1;
        ds[A[i]].baga(B[i], timp);
        ds[B[i]].baga(A[i], timp);
    }
}

int question(int x, int y, int v) {
    int r = -1;
    int timpX = 0, timpY = 0;
    int pas = (1 << bits);
    while(pas) {
        if(r + pas < ds[x].blocks.size() && ds[x].blocks[r + pas].time <= v)
            r += pas;
        pas /= 2;
    }
    unordered_set <int> stX;
    if(r != -1) {
        timpX = ds[x].blocks[r].time + 1;
        for(auto p : ds[x].blocks[r].v)
            stX.insert(p);
    }
    r = -1;
    pas = (1 << bits);
    while(pas) {
        if(r + pas < ds[y].blocks.size() && ds[y].blocks[r + pas].time <= v)
            r += pas;
        pas /= 2;
    }
    unordered_set <int> stY;
    if(r != -1) {
        timpY = ds[y].blocks[r].time + 1;
        for(auto p : ds[y].blocks[r].v)
            stY.insert(p);
    }
    r = -1, pas = (1 << 18);
    while(pas){
        if(r + pas < ds[x].changes.size() && ds[x].changes[r + pas].second < timpX)
            r += pas;
        pas /= 2;
    }
    r++;
    for(; r < ds[x].changes.size() && ds[x].changes[r].second <= v; r++){
        pii change = ds[x].changes[r];
        if(stX.find(change.first) != stX.end()){
            stX.erase(change.first);
        }else{
            stX.insert(change.first);
        }
    }
    r = -1, pas = (1 << 18);
    while(pas){
        if(r + pas < ds[y].changes.size() && ds[y].changes[r + pas].second < timpY)
            r += pas;
        pas /= 2;
    }
    r++;
    for(; r < ds[y].changes.size() && ds[y].changes[r].second <= v; r++){
        pii change = ds[y].changes[r];
        if(stY.find(change.first) != stY.end()){
            stY.erase(change.first);
        }else{
            stY.insert(change.first);
        }
    }
    vector <int> parcurgere[2];
    for(auto x : stX)
        parcurgere[0].push_back(a[x]);
    for(auto x : stY)
        parcurgere[1].push_back(a[x]);
    int minim = 1e9;
    sort(parcurgere[0].begin(), parcurgere[0].end());
    sort(parcurgere[1].begin(), parcurgere[1].end());
    int i = 0, j = 0;
    while(i < parcurgere[0].size() && j < parcurgere[1].size()){
        minim = min(minim, abs(parcurgere[0][i] - parcurgere[1][j]));
        if(parcurgere[0][i] < parcurgere[1][j])
            i++;
        else
            j++;
    }
    return minim;
}

Compilation message

potion.cpp: In function 'int question(int, int, int)':
potion.cpp:75:20: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<BLOCK>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   75 |         if(r + pas < ds[x].blocks.size() && ds[x].blocks[r + pas].time <= v)
      |            ~~~~~~~~^~~~~~~~~~~~~~~~~~~~~
potion.cpp:88:20: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<BLOCK>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   88 |         if(r + pas < ds[y].blocks.size() && ds[y].blocks[r + pas].time <= v)
      |            ~~~~~~~~^~~~~~~~~~~~~~~~~~~~~
potion.cpp:100:20: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<int, int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
  100 |         if(r + pas < ds[x].changes.size() && ds[x].changes[r + pas].second < timpX)
      |            ~~~~~~~~^~~~~~~~~~~~~~~~~~~~~~
potion.cpp:105:13: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<int, int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
  105 |     for(; r < ds[x].changes.size() && ds[x].changes[r].second <= v; r++){
      |           ~~^~~~~~~~~~~~~~~~~~~~~~
potion.cpp:115:20: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<int, int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
  115 |         if(r + pas < ds[y].changes.size() && ds[y].changes[r + pas].second < timpY)
      |            ~~~~~~~~^~~~~~~~~~~~~~~~~~~~~~
potion.cpp:120:13: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<int, int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
  120 |     for(; r < ds[y].changes.size() && ds[y].changes[r].second <= v; r++){
      |           ~~^~~~~~~~~~~~~~~~~~~~~~
potion.cpp:137:13: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
  137 |     while(i < parcurgere[0].size() && j < parcurgere[1].size()){
      |           ~~^~~~~~~~~~~~~~~~~~~~~~
potion.cpp:137:41: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
  137 |     while(i < parcurgere[0].size() && j < parcurgere[1].size()){
      |                                       ~~^~~~~~~~~~~~~~~~~~~~~~

Subtask #1
0.0 / 0.0

# Verdict Execution time Memory Grader output
1 Correct 5 ms 10448 KB Output is correct

Subtask #2
17.0 / 17.0

# Verdict Execution time Memory Grader output
1 Correct 8 ms 10576 KB Output is correct
2 Correct 8 ms 10704 KB Output is correct
3 Correct 7 ms 10704 KB Output is correct
4 Correct 19 ms 11592 KB Output is correct

Subtask #3
0 / 14.0

# Verdict Execution time Memory Grader output
1 Correct 348 ms 41676 KB Output is correct
2 Correct 363 ms 41680 KB Output is correct
3 Correct 465 ms 16984 KB Output is correct
4 Correct 2861 ms 26608 KB Output is correct
5 Correct 855 ms 34660 KB Output is correct
6 Execution timed out 3101 ms 34376 KB Time limit exceeded
7 Halted 0 ms 0 KB -

Subtask #4
0 / 18.0

# Verdict Execution time Memory Grader output
1 Correct 343 ms 41636 KB Output is correct
2 Execution timed out 3084 ms 25236 KB Time limit exceeded
3 Halted 0 ms 0 KB -

Subtask #5
21.0 / 21.0

# Verdict Execution time Memory Grader output
1 Correct 55 ms 12496 KB Output is correct
2 Correct 215 ms 10960 KB Output is correct
3 Correct 437 ms 10972 KB Output is correct
4 Correct 1716 ms 11984 KB Output is correct
5 Correct 1695 ms 12440 KB Output is correct
6 Correct 191 ms 11600 KB Output is correct
7 Correct 1528 ms 11152 KB Output is correct

Subtask #6
0 / 30.0

# Verdict Execution time Memory Grader output
1 Correct 5 ms 10448 KB Output is correct
2 Correct 8 ms 10576 KB Output is correct
3 Correct 8 ms 10704 KB Output is correct
4 Correct 7 ms 10704 KB Output is correct
5 Correct 19 ms 11592 KB Output is correct
6 Correct 348 ms 41676 KB Output is correct
7 Correct 363 ms 41680 KB Output is correct
8 Correct 465 ms 16984 KB Output is correct
9 Correct 2861 ms 26608 KB Output is correct
10 Correct 855 ms 34660 KB Output is correct
11 Execution timed out 3101 ms 34376 KB Time limit exceeded
12 Halted 0 ms 0 KB -