제출 #1026042

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
1026042		faruk	ICC (CEOI16_icc)	C++17	컴파일 에러	0 ms	0 KiB

icc

#include "icc.h"
#include <bits/stdc++.h>
#define all(a) a.begin(), a.end()
 
using namespace std;
 
typedef pair<int, int> pii;

vector<vector<int> > components;

bool query(vector<int> a, vector<int> b) {
    int a_niz[a.size()], b_niz[b.size()];
    for (int i = 0; i < a.size(); i++)
        a_niz[i] = a[i];
    for (int i = 0; i < b.size(); i++)
        b_niz[i] = b[i];
    return query(a.size(), b.size(), a_niz, b_niz);
}

void merge_components(int a, int b) {
    if (a > b)
        swap(a, b);
    vector<int> neww_component = components[a];
    neww_component.insert(neww_component.end(), all(components[b]));
    components.erase(components.begin() + b);
    components.erase(components.begin() + a);
    components.push_back(neww_component);
}

bool components_query(vector<int> a, vector<int> b) {
    vector<int> newa, newb;
    for (int i : a)
        newa.insert(newa.end(), all(components[i]));
    for (int i : b)
        newb.insert(newb.end(), all(components[i]));
    return query(newa, newb);
}

pii find_edge_from_true_query(vector<int> a, vector<int> b) {
    pii out;
    int l = 0, r = a.size();
    while (l < r) {
        int mid = (l + r) / 2;
        if (query(vector<int>(a.begin(), a.begin() + mid + 1), b))
            r = mid, out.first = mid;
        else
            l = mid + 1;
    }

    int l = 0, r = b.size();
    while (l < r) {
        int mid = (l + r) / 2;
        if (query(a, vector<int>(b.begin(), b.begin() + mid + 1)))
            r = mid, out.second = mid;
        else
            l = mid + 1;
    }
    return out;
}

void run(int n) {
    for (int i = 1; i <= n; i++)
        components.push_back(vector<int>(1, i));
    
    for (int i = 0; i < n - 1; i++) {
        vector<int> find_a, find_b;
        for (int bit = 0; bit < 23; bit++) 
        {
            vector<int> cmp1, cmp2;
            for (int i = 0; i < components.size(); i++)
            {
                if (i & (1 << bit))
                    cmp1.push_back(i);
                else
                    cmp2.push_back(i);
            }
            if (components_query(cmp1, cmp2)) {
                find_a = cmp1, find_b = cmp2;
                break;
            }
        }
        pii edge = find_edge_from_true_query(find_a, find_b);
        setRoad(edge.first, edge.second);
        merge_components(edge.first, edge.second);
    }
}

컴파일 시 표준 에러 (stderr) 메시지

icc.cpp: In function 'bool query(std::vector<int>, std::vector<int>)':
icc.cpp:13:23: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   13 |     for (int i = 0; i < a.size(); i++)
      |                     ~~^~~~~~~~~~
icc.cpp:15:23: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   15 |     for (int i = 0; i < b.size(); i++)
      |                     ~~^~~~~~~~~~
icc.cpp: In function 'pii find_edge_from_true_query(std::vector<int>, std::vector<int>)':
icc.cpp:50:9: error: redeclaration of 'int l'
   50 |     int l = 0, r = b.size();
      |         ^
icc.cpp:41:9: note: 'int l' previously declared here
   41 |     int l = 0, r = a.size();
      |         ^
icc.cpp:50:16: error: redeclaration of 'int r'
   50 |     int l = 0, r = b.size();
      |                ^
icc.cpp:41:16: note: 'int r' previously declared here
   41 |     int l = 0, r = a.size();
      |                ^
icc.cpp: In function 'void run(int)':
icc.cpp:70:31: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::vector<int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   70 |             for (int i = 0; i < components.size(); i++)
      |                             ~~^~~~~~~~~~~~~~~~~~~