oj.uz

Submission #946026

# Submission time Handle Problem Language Result Execution time Memory
946026 2024-03-14T09:42:39 Z salmon Road Construction (JOI21_road_construction) C++14
7 / 100
 1982 ms 41328 KB 
#include <bits/stdc++.h>
using namespace std;

int N,K;
vector<pair<long long int,int>> v;
long long int X,Y;
long long int lst[250100];
const long long int inf = 1e18 / 2 * 2;
vector<int> wacter;
long long int plop[250100];
vector<pair<int,pair<int,int>>> de;

struct node{

    int s, m, e;
    int num;
    node *l,*r;

    node(int S, int E){
        s = S;
        e = E;
        m = (s + e)/2;
        num = 0;

        if(s != e){
            l = new node(s,m);
            r = new node(m + 1,e);
        }
    }

    void update(int i, int k){
        if(s == e){
            num += k;
            return;
        }

        num += k;

        if(i <= m){
            l -> update(i,k);
        }
        else{
            r -> update(i,k);
        }
    }

    int query(long long int S, long long int E){
        if(S <= lst[s] && lst[e] <= E){
            return num;
        }

        int V = 0;

        if(S <= lst[m]){
            V += l -> query(S,E);
        }
        if(lst[m + 1] <= E){
            V += r -> query(S,E);
        }
        return V;
    }

    void banana(long long int S, long long int E){
        if(S <= lst[s] && lst[e] <= E && s != e){
            if(l -> num > 0) l -> banana(S,E);
            if(r -> num > 0) r -> banana(S,E);
            return;
        }

        if(s == e ){
            if(num > 0) wacter.push_back(s);
            return;
        }

        int V = 0;

        if(S <= lst[m]){
            l -> banana(S,E);
        }
        if(lst[m + 1] <= E){
            r -> banana(S,E);
        }
    }

}*root;

int main(){

    scanf(" %d",&N);
    scanf(" %d",&K);

    for(int i = 0; i < N; i++){
        scanf(" %lld",&X);
        scanf(" %lld",&Y);


        de.push_back({X+Y,{X,Y}});
    }

    sort(de.begin(),de.end());

    for(int i = 0; i < N; i++){
        int X = de[i].second.first;
        int Y = de[i].second.second;

        v.push_back({X - Y,i});
        lst[i] = X + Y;
        plop[i] = X - Y;
    }

    v.push_back({1e16,-1});

    sort(v.begin(),v.end());

    long long int s = 0;
    long long int e = 5e9;

    root = new node(0,N-1);

    while(s != e){
        long long int m = (s + e)/2;

        int num = 0;
        int it1 = 0;
        int it2 = 0;

        for(int i = 0; i < N; i++){
            while(v[it1].first + m < v[i].first){
                root -> update(v[it1].second,-1);
                it1++;
            }
            while(v[i].first + m >= v[it2].first){
                root -> update(v[it2].second,1);
                it2++;
            }
            num += root -> query(lst[v[i].second] - m, lst[v[i].second] + m ) - 1;
            if(num > 0) break;
        }

        while(it1 != it2){
            root -> update(v[it1].second,-1);
            it1++;
        }

        if(num >= K){
            e = m;
        }
        else{
            s = m + 1;
        }
    }

    map<long long int,int> mep;

    vector<long long int> print;

    mep.erase(0);

    for(pair<long long int, int> ii : mep){
        pair<long long int, int> temp = ii;
        for(; K > 0 && temp.second > 0; K--, temp.second -= 2){
            print.push_back(temp.first);
        }
    }

    while(K > 0){
        print.push_back(s);
        K--;
    }

    for(long long int i : print){
        printf("%lld\n",i);
    }
}
/*
4 5
1000000000 1000000000
-1000000000 -1000000000
1000000000 -1000000000
-1000000000 1000000000
*/

Compilation message

road_construction.cpp: In member function 'void node::banana(long long int, long long int)':
road_construction.cpp:75:13: warning: unused variable 'V' [-Wunused-variable]
   75 |         int V = 0;
      |             ^
road_construction.cpp: In function 'int main()':
road_construction.cpp:89:10: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   89 |     scanf(" %d",&N);
      |     ~~~~~^~~~~~~~~~
road_construction.cpp:90:10: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   90 |     scanf(" %d",&K);
      |     ~~~~~^~~~~~~~~~
road_construction.cpp:93:14: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   93 |         scanf(" %lld",&X);
      |         ~~~~~^~~~~~~~~~~~
road_construction.cpp:94:14: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   94 |         scanf(" %lld",&Y);
      |         ~~~~~^~~~~~~~~~~~

Subtask #1
0 / 5.0

# Verdict Execution time Memory Grader output
1 Incorrect 25 ms 7364 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #2
0 / 6.0

# Verdict Execution time Memory Grader output
1 Incorrect 916 ms 41328 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #3
7.0 / 7.0

# Verdict Execution time Memory Grader output
1 Correct 1203 ms 34676 KB Output is correct
2 Correct 1982 ms 39848 KB Output is correct
3 Correct 1 ms 2392 KB Output is correct
4 Correct 400 ms 37576 KB Output is correct
5 Correct 1816 ms 39976 KB Output is correct

Subtask #4
0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 1203 ms 34676 KB Output is correct
2 Correct 1982 ms 39848 KB Output is correct
3 Correct 1 ms 2392 KB Output is correct
4 Correct 400 ms 37576 KB Output is correct
5 Correct 1816 ms 39976 KB Output is correct
6 Incorrect 222 ms 39596 KB Output isn't correct
7 Halted 0 ms 0 KB -

Subtask #5
0 / 27.0

# Verdict Execution time Memory Grader output
1 Incorrect 25 ms 7364 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #6
0 / 35.0

# Verdict Execution time Memory Grader output
1 Incorrect 25 ms 7364 KB Output isn't correct
2 Halted 0 ms 0 KB -