Submission #933446

#	Time	Username	Problem	Language	Result	Execution time	Memory
933446		AtabayRajabli	A Difficult(y) Choice (BOI21_books)	C++17	Compilation error	0 ms	0 KiB

books

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

using namespace std;

const long long sz = 1e5 + 5;
long long q[sz];

long long get(long long x)
{
    if(q[x])return q[x];
    return q[x] = skim(x);
}

void solve(long long n, long long k, long long a, long long s)
{
    long long l = 1, r = n, ind = n + 1;
    while(l <= r)
    {
        long long m = (l + r) >> 1;
        if(get(m) >= a)r = m - 1, ind = m;
        else l = m + 1;
    }

    if(ind < k)impossible();

    vector<long long> v;
    long long sum = 0;
    for(long long i = 1; i <= k; i++)
    {
        v.push_back(i);
        sum += get(i);
    }
    if(sum > 2 * a)impossible();

    for(long long i = max(k + 1, ind - k + 1); i <= ind; i++)
    {
        v.push_back(i);
    }
    
    l = 0, r = k;
    for(long long i = 0; i + k < v.size(); i++)
    {
        if(a <= sum && sum <= a * 2)break;
        sum -= get(v[l]), l++;
        sum += get(v[r]), r++;
    }
    if(a <= sum && sum <= a * 2)
    {
        vector<int> ans;
        while(l < r)ans.push_back(v[l++]);
        answer(ans);
    }
    else impossible();
}   

Compilation message (stderr)

books.cpp: In function 'void solve(long long int, long long int, long long int, long long int)':
books.cpp:42:32: warning: comparison of integer expressions of different signedness: 'long long int' and 'std::vector<long long int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   42 |     for(long long i = 0; i + k < v.size(); i++)
      |                          ~~~~~~^~~~~~~~~~
/usr/bin/ld: /tmp/cckd9RHp.o: in function `main':
grader.cpp:(.text.startup+0x83): undefined reference to `solve(int, int, long long, int)'
collect2: error: ld returned 1 exit status