제출 #1148894

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
1148894		yeyso	Minerals (JOI19_minerals)	C++20	6 / 100	9 ms	948 KiB

minerals

#include "minerals.h"
#include <bits/stdc++.h>
using namespace std;

void Solve(int N) {
    int cur = 0;
    int prev = 0;
    int x = log2(2 * N) + 1;
    vector<int> binary(2 * N + 1, 0);
    vector<int> a(2 * N + 1, 0);
    for(int bit = 0; bit < x; bit ++){ 
        // 15,000 changes per pass on average
        for(int i = 1; i <= 2 * N; i ++){
            int state = i & (1 << bit);
            int on = 0;
            if(state) on = 1;
            if(on != a[i]){
                prev = Query(i);
                a[i] ^= 1;
            }
            //cout << a[i] << " ";
        } //cout << "\n";
        for(int i = 1; i <= 2 * N; i ++){
            if(i & (1 << bit)){
                cur = Query(i);
                if(cur == prev){
                    binary[i] += (1 << bit);
                }
                prev = Query(i);
            }
        }
        for(int i = 1; i <= 2 * N; i ++){
            if(!(i & (1 << bit))){
                cur = Query(i);
                a[i] ^= 1;
                if(cur == prev){
                    binary[i] += (1 << bit);
                } else {
                    prev = Query(i);
                    a[i] ^= 1;
                }
            }
        }
    }
    for(int i = 1; i <= 2 * N; i ++){
        if(i < binary[i]){
            //cout << i << " : " << binary[i] << "\n";
            Answer(i, binary[i]);
        }
    }
}
/*
g++ -std=gnu++17 -O2 -o minerals grader.cpp minerals.cpp
10
1 7
2 19
3 9
4 12
5 6
8 13
10 11
14 20
15 17
16 18



7
3 14
1 12
5 11
7 13
4 10
2 16
6 15

10
1 17
2 14
3 12
4 19
5 13
6 15
7 11
8 16
9 18
10 20
*/

• Subtask 1: 6 / 6
• Subtask 2: 0 / 25
• Subtask 3: 0 / 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