Submission #721581

#	Time	Username	Problem	Language	Result	Execution time	Memory
721581		sunnat	Art Collections (BOI22_art)	C++17	Compilation error	0 ms	0 KiB

art

#include "art.h"
#include <iostream>
using namespace std;

int start_inv, x;
vector<int> order;
void merge_sort(int l, int r){
    if(l >= r-1) return;
    int m = (l + r) / 2;
    merge_sort(l, m);
    merge_sort(m, r);
    int n = r - l;
    vector<int>b(n);
    start_inv = publish(order);
    for(int i = 0, u = l, v = m; i < n; i ++){
        if(u == m) b[i] = order[v ++];
        else if(v == r) b[i] = order[u ++];
        else{
            swap(order[u], order[v]);
            x = publish(order);
            swap(order[u], order[v]);
            if(x < start_inv)
                b[i] = order[v ++];
            else
                b[i] = order[u ++];
        }
    }
    for(int i = 0; i < n; i ++) order[i+l] = b[i];
}
void solve(int N) {
    for(int i = 1; i <= n; i ++) order.push_back(i);
    merge_sort(0, N);
    answer(order);
}

Compilation message (stderr)

art.cpp: In function 'void solve(int)':
art.cpp:31:25: error: 'n' was not declared in this scope
   31 |     for(int i = 1; i <= n; i ++) order.push_back(i);
      |                         ^
interface.cpp: In function 'int publish(std::vector<int>)':
interface.cpp:20:17: warning: comparison of integer expressions of different signedness: 'std::vector<int>::size_type' {aka 'long unsigned int'} and 'int' [-Wsign-compare]
   20 |     if(v.size() != N) {
      |        ~~~~~~~~~^~~~
interface.cpp: In function 'void answer(std::vector<int>)':
interface.cpp:36:17: warning: comparison of integer expressions of different signedness: 'std::vector<int>::size_type' {aka 'long unsigned int'} and 'int' [-Wsign-compare]
   36 |     if(v.size() != N) {
      |        ~~~~~~~~~^~~~