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Submission #799395

# Submission time Handle Problem Language Result Execution time Memory
799395 2023-07-31T13:47:44 Z PoonYaPat The Potion of Great Power (CEOI20_potion) C++14
100 / 100
 2229 ms 96112 KB 
#include <bits/stdc++.h>
using namespace std;
typedef pair<int,int> pii;
typedef pair<int,set<pii>> piv;

int n,h[100005];
const int sq=50;
vector<pii> c[100005];
vector<piv> v[100005];

bool comp(int a, int b) {return h[a]<h[b];}

void init(int N, int D, int H[]) {
    n=N;
    for (int i=0; i<n; ++i) h[i]=H[i], v[i].push_back(piv(0,{}));
}

void curseChanges(int U, int A[], int B[]) {
    for (int i=0; i<U; ++i) {
        c[A[i]].push_back(pii(i+1,B[i]));
        c[B[i]].push_back(pii(i+1,A[i]));
    }

    for (int i=0; i<n; ++i) {
        set<pii> temp;
        for (int j=0; j<c[i].size(); ++j) {
            int add=c[i][j].second;
            if (temp.find(pii(h[add],add))==temp.end()) temp.insert(pii(h[add],add));
            else temp.erase(temp.find(pii(h[add],add)));
            if ((j+1)%sq==0) v[i].push_back(piv(c[i][j].first,temp));
        }
    }
}

int question(int x, int y, int day) {
    int hx=upper_bound(v[x].begin(),v[x].end(),piv(day+1,{}))-v[x].begin()-1;
    int hy=upper_bound(v[y].begin(),v[y].end(),piv(day+1,{}))-v[y].begin()-1;

    set<pii> tempX=v[x][hx].second, tempY=v[y][hy].second;

    int Hx=upper_bound(c[x].begin(),c[x].end(),pii(v[x][hx].first,INT_MAX))-c[x].begin();
    int Hy=upper_bound(c[y].begin(),c[y].end(),pii(v[y][hy].first,INT_MAX))-c[y].begin();

    while (Hx<c[x].size() && c[x][Hx].first<=day) {
        int add=c[x][Hx].second;
        if (tempX.find(pii(h[add],add))==tempX.end()) tempX.insert(pii(h[add],add));
        else tempX.erase(tempX.find(pii(h[add],add)));
        ++Hx;
    }

    while (Hy<c[y].size() && c[y][Hy].first<=day) {
        int add=c[y][Hy].second;
        if (tempY.find(pii(h[add],add))==tempY.end()) tempY.insert(pii(h[add],add));
        else tempY.erase(tempY.find(pii(h[add],add)));
        ++Hy;
    }

    int ans=1e9;
    auto itx=tempX.begin(), ity=tempY.begin();
    while (itx!=tempX.end() && ity!=tempY.end()) {
        ans=min(ans,abs((*itx).first-(*ity).first));
        if ((*itx).first<(*ity).first) ++itx;
        else ++ity;
    }
    return ans;
}

Compilation message

potion.cpp: In function 'void curseChanges(int, int*, int*)':
potion.cpp:26:24: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<int, int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   26 |         for (int j=0; j<c[i].size(); ++j) {
      |                       ~^~~~~~~~~~~~
potion.cpp: In function 'int question(int, int, int)':
potion.cpp:44:14: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<int, int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   44 |     while (Hx<c[x].size() && c[x][Hx].first<=day) {
      |            ~~^~~~~~~~~~~~
potion.cpp:51:14: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<int, int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   51 |     while (Hy<c[y].size() && c[y][Hy].first<=day) {
      |            ~~^~~~~~~~~~~~

Subtask #1
0.0 / 0.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 4944 KB Output is correct

Subtask #2
17.0 / 17.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 5028 KB Output is correct
2 Correct 4 ms 5072 KB Output is correct
3 Correct 3 ms 5072 KB Output is correct
4 Correct 19 ms 12104 KB Output is correct

Subtask #3
14.0 / 14.0

# Verdict Execution time Memory Grader output
1 Correct 151 ms 19888 KB Output is correct
2 Correct 149 ms 19824 KB Output is correct
3 Correct 313 ms 21176 KB Output is correct
4 Correct 1366 ms 58204 KB Output is correct
5 Correct 495 ms 13872 KB Output is correct
6 Correct 2229 ms 86348 KB Output is correct
7 Correct 642 ms 25884 KB Output is correct

Subtask #4
18.0 / 18.0

# Verdict Execution time Memory Grader output
1 Correct 148 ms 19848 KB Output is correct
2 Correct 1646 ms 93120 KB Output is correct
3 Correct 1072 ms 52556 KB Output is correct
4 Correct 1802 ms 85872 KB Output is correct
5 Correct 296 ms 23488 KB Output is correct
6 Correct 1888 ms 86136 KB Output is correct

Subtask #5
21.0 / 21.0

# Verdict Execution time Memory Grader output
1 Correct 35 ms 6096 KB Output is correct
2 Correct 183 ms 6096 KB Output is correct
3 Correct 266 ms 6144 KB Output is correct
4 Correct 792 ms 7376 KB Output is correct
5 Correct 722 ms 6992 KB Output is correct
6 Correct 151 ms 5436 KB Output is correct
7 Correct 697 ms 7120 KB Output is correct

Subtask #6
30.0 / 30.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 4944 KB Output is correct
2 Correct 3 ms 5028 KB Output is correct
3 Correct 4 ms 5072 KB Output is correct
4 Correct 3 ms 5072 KB Output is correct
5 Correct 19 ms 12104 KB Output is correct
6 Correct 151 ms 19888 KB Output is correct
7 Correct 149 ms 19824 KB Output is correct
8 Correct 313 ms 21176 KB Output is correct
9 Correct 1366 ms 58204 KB Output is correct
10 Correct 495 ms 13872 KB Output is correct
11 Correct 2229 ms 86348 KB Output is correct
12 Correct 642 ms 25884 KB Output is correct
13 Correct 148 ms 19848 KB Output is correct
14 Correct 1646 ms 93120 KB Output is correct
15 Correct 1072 ms 52556 KB Output is correct
16 Correct 1802 ms 85872 KB Output is correct
17 Correct 296 ms 23488 KB Output is correct
18 Correct 1888 ms 86136 KB Output is correct
19 Correct 35 ms 6096 KB Output is correct
20 Correct 183 ms 6096 KB Output is correct
21 Correct 266 ms 6144 KB Output is correct
22 Correct 792 ms 7376 KB Output is correct
23 Correct 722 ms 6992 KB Output is correct
24 Correct 151 ms 5436 KB Output is correct
25 Correct 697 ms 7120 KB Output is correct
26 Correct 823 ms 41092 KB Output is correct
27 Correct 1160 ms 52628 KB Output is correct
28 Correct 1145 ms 47304 KB Output is correct
29 Correct 1300 ms 58260 KB Output is correct
30 Correct 2124 ms 86348 KB Output is correct
31 Correct 1983 ms 96112 KB Output is correct
32 Correct 2041 ms 86264 KB Output is correct