제출 #544401

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
544401		Lobo	Counting Mushrooms (IOI20_mushrooms)	C++17	0 / 100	0 ms	220 KiB

mushrooms

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

const long long inf = (long long) 1e18 + 10;
const int inf1 = (int) 1e9 + 10;
// #define int long long
#define dbl long double
#define endl '\n'
#define sc second
#define fr first
#define mp make_pair
#define pb push_back
#define all(x) x.begin(), x.end()

const int maxn = 2e4 + 10;


// int s[maxn];
// int use_machine(vector<int> x) {
//     const int xs = x.size();
    
//     int diffs = 0;
//     for (int i = 1; i < xs; i++)
//         diffs += int(s[x[i]] != s[x[i-1]]);
//     return diffs;
// }

int a[maxn];

int count_mushrooms(int n) {
    int B = 3;

    vector<int> va, vb;
    a[0] = 1;
    va.pb(0);
    for(int i = 1; i < n; i++) {
        vector<int> vqr; vqr.pb(0); vqr.pb(i);
        if(use_machine(vqr) == 0) {
            va.pb(i);
            a[i] = 1;
        }
        else {
            vb.pb(i);
            a[i] = 2;
        }

        if(va.size() >= B || vb.size() >= B) {
            break;
        }
    }

    int ans = va.size();

    if(va.size() >= B) {
        int i = 1;
        while(i != n) {
            int j = 0;
            vector<int> vqr;
            while(vqr.size() != 2*B-2 && i != n) {
                if(a[i] != 0) {
                    i++;
                    continue;
                }
                vqr.pb(va[j++]);
                vqr.pb(i++);
            }
            vqr.pb(va[j]);
            int qr = use_machine(vqr);
            qr = ((int) vqr.size()) -1 - qr;
            ans+= qr/2;
        }
    }
    else {
        int i = 1;
        while(i != n) {
            int j = 0;
            vector<int> vqr;
            while(vqr.size() != 2*B-2 && i != n) {
                if(a[i] != 0) {
                    i++;
                    continue;
                }
                vqr.pb(vb[j++]);
                vqr.pb(i++);
            }
            vqr.pb(vb[j]);
            int qr = use_machine(vqr);
            qr = ((int) vqr.size()) -1 - qr;
            ans+= ((int) vqr.size())/2 - qr/2;
        }
    }

    return ans;


}


// int32_t main() {
//     ios::sync_with_stdio(false); cin.tie(0);

//     freopen("in.in", "r", stdin);
//     // freopen("out.out", "w", stdout);
    
//     int n;
//     cin >> n;
//     for(int i = 0; i < n; i++) {
//         int x; cin >> x;
//         s[i] = x;
//     }

//     cout << count_mushrooms(n) << endl;

// }

컴파일 시 표준 에러 (stderr) 메시지

mushrooms.cpp: In function 'int count_mushrooms(int)':
mushrooms.cpp:48:22: warning: comparison of integer expressions of different signedness: 'std::vector<int>::size_type' {aka 'long unsigned int'} and 'int' [-Wsign-compare]
   48 |         if(va.size() >= B || vb.size() >= B) {
      |            ~~~~~~~~~~^~~~
mushrooms.cpp:48:40: warning: comparison of integer expressions of different signedness: 'std::vector<int>::size_type' {aka 'long unsigned int'} and 'int' [-Wsign-compare]
   48 |         if(va.size() >= B || vb.size() >= B) {
      |                              ~~~~~~~~~~^~~~
mushrooms.cpp:55:18: warning: comparison of integer expressions of different signedness: 'std::vector<int>::size_type' {aka 'long unsigned int'} and 'int' [-Wsign-compare]
   55 |     if(va.size() >= B) {
      |        ~~~~~~~~~~^~~~
mushrooms.cpp:60:30: warning: comparison of integer expressions of different signedness: 'std::vector<int>::size_type' {aka 'long unsigned int'} and 'int' [-Wsign-compare]
   60 |             while(vqr.size() != 2*B-2 && i != n) {
      |                   ~~~~~~~~~~~^~~~~~~~
mushrooms.cpp:79:30: warning: comparison of integer expressions of different signedness: 'std::vector<int>::size_type' {aka 'long unsigned int'} and 'int' [-Wsign-compare]
   79 |             while(vqr.size() != 2*B-2 && i != n) {
      |                   ~~~~~~~~~~~^~~~~~~~

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