Submission #658065

#	Time	Username	Problem	Language	Result	Execution time	Memory
658065		kusssso	Detecting Molecules (IOI16_molecules)	C++17	Compilation error	0 ms	0 KiB

molecules

#include<bits/stdc++.h>
using namespace std;
using ll = long long;
#define int long long

vector<int> find_subset (int l, int u, vector<int> w) {
    vector<int> res;
    vector<pair<int, int>> v;
    int n = w.size();
    for (int i = 0; i < n; i++) {
        v.push_back({w[i], i});
    }
    sort(v.begin(), v.end());
    vector<int> pf(n, 0);
    vector<int> sf(n + 1, 0);
    for (int i = 0; i < n; i++) {
        pf[i] = (i == 0 ? 0 : pf[i - 1]) + v[i].first;
    }
    for (int i = n - 1; i >= 0; i--) {
        sf[i] = sf[i + 1] + v[i].first;
    }
    for (int len = 1; len <= n; len++) {
        if (pf[len - 1] >= l or sf[n - len] >= l) {
            if (pf[len - 1] > u) return {};
            for (int i = 0; i + len - 1 < n; i++) {
                int sum = pf[i + len - 1] - (i == 0 ? 0 : pf[i - 1]);
                if (l <= sum and sum <= u) {
                    for (int j = i; j < i + len; j++) {
                        res.push_back(v[j].second);
                    }
                    return res;
                }
            }
        }
    }
    return {};
}

Compilation message (stderr)

/usr/bin/ld: /tmp/ccSa0pmG.o: in function `main':
grader.cpp:(.text.startup+0x18d): undefined reference to `find_subset(int, int, std::vector<int, std::allocator<int> >)'
collect2: error: ld returned 1 exit status