oj.uz

Submission #946127

# Submission time Handle Problem Language Result Execution time Memory
946127 2024-03-14T10:39:23 Z berr The Potion of Great Power (CEOI20_potion) C++17
100 / 100
 2694 ms 28940 KB 
#include <bits/stdc++.h>
using namespace std;
 
int n, d;
vector<int> h;
vector<vector<array<int, 2>>> a;
vector<vector<array<int, 2>>> op;
vector<vector<vector<int>>> b;
 
void init(int N, int D, int H[]){
 
    n = N; d = D;
    a.resize(n);
    b.resize(n);
    op.resize(n);
    for(int i=0; i<n; i++) h.push_back(H[i]);
    vector<int> emp;
    for(int i=0; i<n; i++){
        a[i].push_back({0, 0});
        b[i].push_back(emp);
    }
}
 
void curseChanges(int U, int A[], int B[]){
    for(int i=1; i<=U; i++){
        op[B[i-1]].push_back({i, A[i-1]});
        op[A[i-1]].push_back({i, B[i-1]});
    }
 
    for(int i=0; i<n; i++){
        vector<int> st;
        for(int j=0; j<op[i].size(); j++){
            st.push_back(op[i][j][1]);
            if(j%500) continue;
 
                vector<int>ar;
               
                sort(st.begin(), st.end(), [&](int x, int y){
                    if(h[x]!=h[y]) return h[x]<h[y];
                    return x<y;
                });
                int k=1;
                for(int l=1; l<st.size(); l++){
                    if(st[l]==st[l-1]) k++;
                    else{
                        if(k%2==1){
                            ar.push_back(st[l-1]);
                        }
                        k=1;
                    }
                }
 
                if(k%2==1){
                    ar.push_back(st.back());
                }
 
                a[i].push_back({op[i][j][0], j});
                b[i].push_back(ar);
                st = ar;
 
            }            
            
        
    }
}
 
 
int question(int x, int y, int v){
 
    int posx=lower_bound(a[x].begin(), a[x].end(), (array<int, 2>){v+1, 0})-a[x].begin()-1;
    int posy=lower_bound(a[y].begin(), a[y].end(),(array<int, 2>){v+1, 0})-a[y].begin()-1;
 
 
    vector<int> xx, yy, xr, yr;
 
    for(int i=a[x][posx][1]+1; i<op[x].size()&&op[x][i][0]<=v; i++){
        xx.push_back(op[x][i][1]);
    }
 
    for(int i=a[y][posy][1]+1; i<op[y].size()&&op[y][i][0]<=v; i++){
        yy.push_back(op[y][i][1]);
    }
    sort(xx.begin(), xx.end(), [&](int x, int y){
 
        if(h[x]!=h[y]) return h[x]<h[y];
        return x<y;
    });
 
    sort(yy.begin(), yy.end(), [&](int x, int y){
        if(h[x]!=h[y]) return h[x]<h[y];
        return x<y;
    });
 
 
    int k=1;
    for(int l=1; l<xx.size(); l++){
        if(xx[l]==xx[l-1]) k++;
        else{
            if(k%2==1){
                xr.push_back(xx[l-1]);
            }
            k=1;
        }
    }
 
    if(k%2==1&&xx.size()){
        xr.push_back(xx.back());
    }
    k=1;
    for(int l=1; l<yy.size(); l++){
        if(yy[l]==yy[l-1]) k++;
        else{
            if(k%2==1){
                yr.push_back(yy[l-1]);
            }
            k=1;
        }
    }
 
    if(k%2==1&&yy.size()){
        yr.push_back(yy.back());
    }
 
 
    int itx=0, ity=0;
    int itrx=0, itry=0;
 
    int ans = 1e9;
    while(1){
        if(itrx>=xr.size() && itx>=b[x][posx].size()) break;
        if(itry>=yr.size() && ity>=b[y][posy].size()) break;
        
        int valfirst, valsecond;
        int p1, p2;
        int check =0;
        if(itrx < xr.size() && itx < b[x][posx].size()){
            if(xr[itrx] == b[x][posx][itx]){
                itrx++; itx++;
                check=1;
            }
            else{
                valfirst=min(h[xr[itrx]],  h[b[x][posx][itx]]);
 
                if(h[xr[itrx]]<h[b[x][posx][itx]]) p1=0;
                else p1=1;
            }
        }
        else if(itrx<xr.size()){
            p1=0;
            valfirst=h[xr[itrx]];
        }
        else p1=1, valfirst=h[b[x][posx][itx]];
 
        if(itry < yr.size() && ity < b[y][posy].size()){
            if(yr[itry] == b[y][posy][ity]){
                itry++; ity++;
                check=1;
            }
            else{
                valsecond=min(h[yr[itry]],  h[b[y][posy][ity]]);
 
                if(h[yr[itry]]<h[b[y][posy][ity]]) p2=0;
                else p2=1;
            }
        }
        else if(itry<yr.size()){
            p2=0;
            valsecond=h[yr[itry]];
        }
        else p2=1, valsecond=h[b[y][posy][ity]];
        if(check) continue;
        ans=min(ans, abs(valfirst-valsecond));
 
        if(p1==0&&p2==0){
            if(h[xr[itrx]] < h[yr[itry]]) itrx++;
            else itry++;
        }
        else if(p1==0&&p2==1){
            if(h[xr[itrx]] < h[b[y][posy][ity]]) itrx++;
            else ity++;        
        }
        else if(p1==1&&p2==0){
            if(h[b[x][posx][itx]] < h[yr[itry]]) itx++;
            else itry++;  
        }
        else{
            if(h[b[x][posx][itx]] < h[b[y][posy][ity]]) itx++;
            else ity++;  
        }
 
    }
    return ans;
    return 1;
}/*
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;
    }
  }
  cout<<(float)(clock())/1000.0<<"\n";
 
  if (correct) {
    std::cout << "Correct." << std::endl;
  } else std::cout << "Incorrect." << std::endl;
    return 0;
 
}*/

Compilation message

potion.cpp: In function 'void curseChanges(int, int*, int*)':
potion.cpp:32:23: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::array<int, 2> >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   32 |         for(int j=0; j<op[i].size(); j++){
      |                      ~^~~~~~~~~~~~~
potion.cpp:43:31: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   43 |                 for(int l=1; l<st.size(); l++){
      |                              ~^~~~~~~~~~
potion.cpp: In function 'int question(int, int, int)':
potion.cpp:76:33: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::array<int, 2> >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   76 |     for(int i=a[x][posx][1]+1; i<op[x].size()&&op[x][i][0]<=v; i++){
      |                                ~^~~~~~~~~~~~~
potion.cpp:80:33: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::array<int, 2> >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   80 |     for(int i=a[y][posy][1]+1; i<op[y].size()&&op[y][i][0]<=v; i++){
      |                                ~^~~~~~~~~~~~~
potion.cpp:96:19: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   96 |     for(int l=1; l<xx.size(); l++){
      |                  ~^~~~~~~~~~
potion.cpp:110:19: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
  110 |     for(int l=1; l<yy.size(); l++){
      |                  ~^~~~~~~~~~
potion.cpp:130:16: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
  130 |         if(itrx>=xr.size() && itx>=b[x][posx].size()) break;
      |            ~~~~^~~~~~~~~~~
potion.cpp:130:34: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
  130 |         if(itrx>=xr.size() && itx>=b[x][posx].size()) break;
      |                               ~~~^~~~~~~~~~~~~~~~~~~
potion.cpp:131:16: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
  131 |         if(itry>=yr.size() && ity>=b[y][posy].size()) break;
      |            ~~~~^~~~~~~~~~~
potion.cpp:131:34: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
  131 |         if(itry>=yr.size() && ity>=b[y][posy].size()) break;
      |                               ~~~^~~~~~~~~~~~~~~~~~~
potion.cpp:136:17: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
  136 |         if(itrx < xr.size() && itx < b[x][posx].size()){
      |            ~~~~~^~~~~~~~~~~
potion.cpp:136:36: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
  136 |         if(itrx < xr.size() && itx < b[x][posx].size()){
      |                                ~~~~^~~~~~~~~~~~~~~~~~~
potion.cpp:148:21: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
  148 |         else if(itrx<xr.size()){
      |                 ~~~~^~~~~~~~~~
potion.cpp:154:17: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
  154 |         if(itry < yr.size() && ity < b[y][posy].size()){
      |            ~~~~~^~~~~~~~~~~
potion.cpp:154:36: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
  154 |         if(itry < yr.size() && ity < b[y][posy].size()){
      |                                ~~~~^~~~~~~~~~~~~~~~~~~
potion.cpp:166:21: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
  166 |         else if(itry<yr.size()){
      |                 ~~~~^~~~~~~~~~

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 2 ms 600 KB Output is correct
2 Correct 1 ms 600 KB Output is correct
3 Correct 1 ms 600 KB Output is correct
4 Correct 24 ms 15104 KB Output is correct

Subtask #3
14.0 / 14.0

# Verdict Execution time Memory Grader output
1 Correct 198 ms 28580 KB Output is correct
2 Correct 202 ms 28940 KB Output is correct
3 Correct 1181 ms 20200 KB Output is correct
4 Correct 2447 ms 6652 KB Output is correct
5 Correct 314 ms 9100 KB Output is correct
6 Correct 2694 ms 27856 KB Output is correct
7 Correct 1166 ms 27852 KB Output is correct

Subtask #4
18.0 / 18.0

# Verdict Execution time Memory Grader output
1 Correct 181 ms 28660 KB Output is correct
2 Correct 1348 ms 24264 KB Output is correct
3 Correct 1467 ms 27324 KB Output is correct
4 Correct 1493 ms 27332 KB Output is correct
5 Correct 372 ms 28220 KB Output is correct
6 Correct 1660 ms 27364 KB Output is correct

Subtask #5
21.0 / 21.0

# Verdict Execution time Memory Grader output
1 Correct 39 ms 2832 KB Output is correct
2 Correct 146 ms 2292 KB Output is correct
3 Correct 927 ms 2408 KB Output is correct
4 Correct 1315 ms 2676 KB Output is correct
5 Correct 972 ms 3420 KB Output is correct
6 Correct 85 ms 1108 KB Output is correct
7 Correct 1307 ms 2764 KB Output is correct

Subtask #6
30.0 / 30.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 344 KB Output is correct
2 Correct 2 ms 600 KB Output is correct
3 Correct 1 ms 600 KB Output is correct
4 Correct 1 ms 600 KB Output is correct
5 Correct 24 ms 15104 KB Output is correct
6 Correct 198 ms 28580 KB Output is correct
7 Correct 202 ms 28940 KB Output is correct
8 Correct 1181 ms 20200 KB Output is correct
9 Correct 2447 ms 6652 KB Output is correct
10 Correct 314 ms 9100 KB Output is correct
11 Correct 2694 ms 27856 KB Output is correct
12 Correct 1166 ms 27852 KB Output is correct
13 Correct 181 ms 28660 KB Output is correct
14 Correct 1348 ms 24264 KB Output is correct
15 Correct 1467 ms 27324 KB Output is correct
16 Correct 1493 ms 27332 KB Output is correct
17 Correct 372 ms 28220 KB Output is correct
18 Correct 1660 ms 27364 KB Output is correct
19 Correct 39 ms 2832 KB Output is correct
20 Correct 146 ms 2292 KB Output is correct
21 Correct 927 ms 2408 KB Output is correct
22 Correct 1315 ms 2676 KB Output is correct
23 Correct 972 ms 3420 KB Output is correct
24 Correct 85 ms 1108 KB Output is correct
25 Correct 1307 ms 2764 KB Output is correct
26 Correct 1102 ms 23860 KB Output is correct
27 Correct 1583 ms 27160 KB Output is correct
28 Correct 1202 ms 28228 KB Output is correct
29 Correct 1710 ms 6660 KB Output is correct
30 Correct 1938 ms 27352 KB Output is correct
31 Correct 1625 ms 23680 KB Output is correct
32 Correct 1797 ms 27448 KB Output is correct