제출 #402944

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
402944		doowey	The Collection Game (BOI21_swaps)	C++14	100 / 100	7 ms	472 KiB

swaps

#include <bits/stdc++.h>
#include "swaps.h"

using namespace std;

typedef long long ll;
typedef pair<int, int> pii;

#define fi first
#define se second
#define mp make_pair
#define fastIO ios::sync_with_stdio(false);cin.tie(0);cout.tie(0);

vector<int> ord;

void do_shit(vector<pii> shit){
    for(auto x : shit){
        schedule(ord[x.fi], ord[x.se]);
    }
    vector<int> gg = visit();
    for(int i = 0 ; i < gg.size(); i ++ ){
        if(!gg[i]){
            swap(ord[shit[i].fi], ord[shit[i].se]);
        }
    }
}

void solve(int n, int q) {
    int nx;
    for(int i = 1; i <= n; i ++ ){
        ord.push_back(i);
    }
    for(int k = 1; k < n * 2; k *= 2){
        vector<pii> ash;
        for(int i = 0 ; i < n; i ++ ){
            nx = (i ^ (k - 1));
            if(i < nx && nx < n)
                ash.push_back(mp(i, nx));
        }
        do_shit(ash);

        for(int v = k / 4; v > 0 ; v /= 2){
            ash.clear();
            for(int j = 0 ; j < n; j ++){
                nx = (j ^ v);
                if(j < nx && nx < n){
                    ash.push_back(mp(j, nx));
                }
            }
            do_shit(ash);
        }
    }
    answer(ord);
}

컴파일 시 표준 에러 (stderr) 메시지

swaps.cpp: In function 'void do_shit(std::vector<std::pair<int, int> >)':
swaps.cpp:21:23: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   21 |     for(int i = 0 ; i < gg.size(); i ++ ){
      |                     ~~^~~~~~~~~~~

• Subtask 1: 5 / 5
• Subtask 2: 10 / 10
• Subtask 3: 3 / 3
• Subtask 4: 2 / 2
• Subtask 5: 9 / 9
• Subtask 6: 6 / 6
• Subtask 7: 9 / 9
• Subtask 8: 6 / 6
• Subtask 9: 21 / 21
• Subtask 10: 14 / 14
• Subtask 11: 9 / 9
• Subtask 12: 6 / 6