Submission #643218

#	Time	Username	Problem	Language	Result	Execution time	Memory
643218		Vladth11	The Potion of Great Power (CEOI20_potion)	C++14	38 / 100	3097 ms	41720 KiB

potion

#include <iostream>
#include <vector>
#include <set>
#include <unordered_set>
#include <algorithm>
 
//#define debug(x) cerr << #x << " " << x << "\n"
 
 
using namespace std;
typedef long long ll;
typedef pair <int, int> pii;
 
const int bSize = 50;
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 (stderr)

potion.cpp: In function 'int question(int, int, int)':
potion.cpp:74:20: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<BLOCK>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   74 |         if(r + pas < ds[x].blocks.size() && ds[x].blocks[r + pas].time <= v)
      |            ~~~~~~~~^~~~~~~~~~~~~~~~~~~~~
potion.cpp:87:20: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<BLOCK>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   87 |         if(r + pas < ds[y].blocks.size() && ds[y].blocks[r + pas].time <= v)
      |            ~~~~~~~~^~~~~~~~~~~~~~~~~~~~~
potion.cpp:99:20: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<int, int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   99 |         if(r + pas < ds[x].changes.size() && ds[x].changes[r + pas].second < timpX)
      |            ~~~~~~~~^~~~~~~~~~~~~~~~~~~~~~
potion.cpp:104:13: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<int, int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
  104 |     for(; r < ds[x].changes.size() && ds[x].changes[r].second <= v; r++){
      |           ~~^~~~~~~~~~~~~~~~~~~~~~
potion.cpp:114:20: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<int, int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
  114 |         if(r + pas < ds[y].changes.size() && ds[y].changes[r + pas].second < timpY)
      |            ~~~~~~~~^~~~~~~~~~~~~~~~~~~~~~
potion.cpp:119:13: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<int, int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
  119 |     for(; r < ds[y].changes.size() && ds[y].changes[r].second <= v; r++){
      |           ~~^~~~~~~~~~~~~~~~~~~~~~
potion.cpp:136:13: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
  136 |     while(i < parcurgere[0].size() && j < parcurgere[1].size()){
      |           ~~^~~~~~~~~~~~~~~~~~~~~~
potion.cpp:136:41: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
  136 |     while(i < parcurgere[0].size() && j < parcurgere[1].size()){
      |                                       ~~^~~~~~~~~~~~~~~~~~~~~~

• Subtask 1: 0 / 0
• Subtask 2: 17 / 17
• Subtask 3: 0 / 14
• Subtask 4: 0 / 18
• Subtask 5: 21 / 21
• Subtask 6: 0 / 30