Submission #1264824

#	Time	Username	Problem	Language	Result	Execution time	Memory
1264824		Art	Detecting Molecules (IOI16_molecules)	C++20	Compilation error	0 ms	0 KiB

molecules

//      - Art -
#include "molecules"
#include <bits/stdc++.h>

#define el              cout << '\n'

#define FOR(i, a, b)    for (int i = (a), _b = (b); i <= _b; ++i)
#define REV(i, b, a)    for (int i = (b), _a = (a); i >= _a; --i)
#define REP(i, c)       for (int i = 0, _c = (c); i < _c; ++i)

const int N = 2e5 + 7;

using namespace std;

int idx[N];

int find_subset(int l, int r, int w[], int n, int result[]) {
    int it = 0;
    long long sum = 0;
    REP (i, n) {
        idx[i] = i;
    }
    sort(idx, idx + n, [&](int i, int j) {
        return w[i] < w[j];
    });
    REP (i, n) {
        sum += w[idx[i]];
        while (sum > r) {
            sum -= w[idx[it++]];
        }
        if (l <= sum) {
            int sz = 0;
            FOR (j, it, i) {
                result[sz++] = idx[j];
            }
            return i - it + 1;
        }
    }
    return 0;
}

Compilation message (stderr)

molecules.h:1:9: warning: #pragma once in main file
    1 | #pragma once
      |         ^~~~
molecules_c.h:1:9: warning: #pragma once in main file
    1 | #pragma once
      |         ^~~~
/usr/bin/ld: /tmp/ccn2gg3x.o: in function `main':
grader.cpp:(.text.startup+0x173): undefined reference to `find_subset(int, int, std::vector<int, std::allocator<int> >)'
collect2: error: ld returned 1 exit status