Submission #128858

#	Time	Username	Problem	Language	Result	Execution time	Memory
128858		Osama_Alkhodairy	Minerals (JOI19_minerals)	C++17	85 / 100	365 ms	6284 KiB

minerals

#include <bits/stdc++.h>
#include "minerals.h"
//~ #include "grader.cpp"
using namespace std;
 
set <int> active; 
vector <int> s, e;
int curl, curr;
int curq;

int query(int x){
    if(active.count(x)) active.erase(x);
    else active.insert(x);
    return curq = Query(x);
}
void solve(int l, int r, vector <int> &cur){
    if(r < l) return;
    if(l == r){
        assert(cur.size() == 1);
        Answer(e[l], cur[0]);
        return;
    }
    int mid = (l + r) / 2;
    for(int i = l ; i <= mid ; i++){
        if(active.count(e[i])) continue;
        query(e[i]);
    }
    for(int i = mid + 1 ; i <= r ; i++){
        if(!active.count(e[i])) continue;
        query(e[i]);
    }
    vector <int> left, right;
    for(int i = 0 ; i < (int)cur.size() - 1 ; i++){
        int las = curq;
        query(cur[i]);
        if(curq == las) left.push_back(cur[i]);
        else right.push_back(cur[i]);
    }
    if((int)left.size() != mid - l + 1) left.push_back(cur.back());
    else right.push_back(cur.back());
    solve(l, mid, left);
    solve(mid + 1, r, right);
}
void Solve(int N){
    for(int i = 1 ; i <= 2 * N ; i++){
        int prev = curq;
        query(i);
        if(curq != prev) s.push_back(i);
        else e.push_back(i);
    }
    curl = 0;
    curr = N - 1;
    solve(0, N - 1, s);
}

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