Submission #1019702

#	Time	Username	Problem	Language	Result	Execution time	Memory
1019702		tengiz05	Minerals (JOI19_minerals)	C++17	40 / 100	21 ms	2904 KiB

minerals

#include <bits/stdc++.h>
#include <ext/pb_ds/assoc_container.hpp>
#include <ext/pb_ds/tree_policy.hpp>
 
using namespace std;
using namespace __gnu_pbds;
 
template<typename T> using Tree = tree<T, null_type, less<T>, rb_tree_tag, tree_order_statistics_node_update>;
typedef long long int ll;
typedef long double ld;
typedef pair<int,int> pii;
typedef pair<ll,ll> pll;
 
#define fastio ios_base::sync_with_stdio(false); cin.tie(NULL)
#define pb push_back
#define endl '\n'
#define sz(a) (int)a.size()
#define setbits(x) __builtin_popcountll(x)
#define ff first
#define ss second
#define conts continue
#define ceil2(x,y) ((x+y-1)/(y))
#define all(a) a.begin(), a.end()
#define rall(a) a.rbegin(), a.rend()
#define yes cout << "Yes" << endl
#define no cout << "No" << endl
 
#define rep(i,n) for(int i = 0; i < n; ++i)
#define rep1(i,n) for(int i = 1; i <= n; ++i)
#define rev(i,s,e) for(int i = s; i >= e; --i)
#define trav(i,a) for(auto &i : a)
 
template<typename T>
void amin(T &a, T b) {
    a = min(a,b);
}
 
template<typename T>
void amax(T &a, T b) {
    a = max(a,b);
}
 
#ifdef LOCAL
#include "debug.h"
#else
#define debug(...) 42
#endif
 
/*
 
read the solution a long time back, remember some key ideas from there (d&c, splitting with different ratio instead of 0.5)
 
*/
 
const int MOD = 1e9 + 7;
const int N = 1e5 + 5;
const int inf1 = int(1e9) + 5;
const ll inf2 = ll(1e18) + 5;
 
#include "minerals.h"
 
vector<pii> ans;
 
void go(vector<int> &a, vector<int> &b){
    if(a.empty()) return;
    if(sz(a) == 1){
        ans.pb({a[0],b[0]});
        return;
    }
 
    vector<int> al,ar;
    rep(i,sz(a)){
        if(i < sz(a)/2){
            al.pb(a[i]);
        }
        else{
            ar.pb(a[i]);
        }
    }
 
    int distinct = 0;
    trav(x,al){
        distinct++;
        Query(x);
    }
 
    vector<int> bl,br;
 
    trav(x,b){
        int res = Query(x);
        if(res == distinct){
            bl.pb(x);
        }
        else{
            br.pb(x);
        }
        Query(x);
    }
 
    trav(x,al){
        Query(x);
    }
 
    go(al,bl);
    go(ar,br);
}
 
void Solve(int n) {
    // int v = Query(1);
    // for (int i = 1; i <= N; ++i) {
    //     Answer(i, 2 * N + 1 - i);
    // }
 
    vector<int> v1,v2;
    int distinct = 0;
 
    rep1(i,2*n){
        int x = Query(i);
        if(x == distinct+1){
            v1.pb(i);
            distinct++;
        }
        else{
            v2.pb(i);
        }
    }
 
    rep1(i,2*n) Query(i);
    random_shuffle(v1.begin(), v1.end());
    random_shuffle(v2.begin(), v2.end());
    go(v1,v2);
 
    for(auto [i,j] : ans){
        Answer(i,j);
    }
}

• Subtask 1: 6 / 6
• Subtask 2: 25 / 25
• Subtask 3: 9 / 9
• Subtask 4: 0 / 30
• Subtask 5: 0 / 5
• Subtask 6: 0 / 5
• Subtask 7: 0 / 5
• Subtask 8: 0 / 5
• Subtask 9: 0 / 10