Submission #552476

#	Time	Username	Problem	Language	Result	Execution time	Memory
552476		Sharky	Detecting Molecules (IOI16_molecules)	C++17	Compilation error	0 ms	0 KiB

molecules

#include <bits/stdc++.h>
using namespace std;

#define ll long long
#define ld long double
#define all(x) x.begin(), x.end()
#define sz(x) (int)(x).size()
#define mp make_pair
#define pb push_back
#define fi first
#define se second
#define endl "\n"
#define vll vector<long long>
const int inf = 1e9 + 5;
const int MOD = 1e9 + 7;
#define FOR(i, a, b) for (int i=a; i<(b); i++)
#define F0R(i, a) for (int i=0; i<(a); i++)

bool cmp(pair<ll, ll> x, pair<ll, ll> y) {
    return x.fi < y.fi;
}

int main() {
    ios_base::sync_with_stdio(0); cin.tie(0);
    ll n, lo, hi; cin >> n >> lo >> hi; vector<pair<ll, ll> > v(n); vll psum(n);
    F0R(i, n) {
        cin >> v[i].fi;
        v[i].se = i;
    }
    sort(all(v), cmp);
    F0R(i, n) {
        if (i == 0) {
            psum[0] = v[0].fi;
        } else {
            psum[i] = psum[i - 1] + v[i].fi;
        }
    }
    if (psum[n - 1] >= lo && psum[n - 1] <= hi) {
        cout << n << endl;
        for (ll i = 0; i < n; i++) {
            cout << i << " ";
        }
        cout << endl;
        return 0;
    }
    for (ll i = 1; i < n; i++) {
        if (psum[n - 1] - psum[i - 1] >= lo && psum[n - 1] - psum[i - 1] <= hi) {
            cout << n - i << endl;
            for (ll j = i; j <= n - 1; j++) {
                cout << v[j].se << " ";
            }
            cout << endl;
            return 0;
        }
    }
    /*for (ll i = 0; i < n; i++) {
        cout << psum[i] << " ";
    }
    cout << endl; */
    for (ll i = 0; i < n; i++) {
        ll ans = -1;
        ll l = 0, r = n - 1; ll mid = (l + r) / 2;
        if (i == 0) {
            //ll l = 0, r = n - 1; ll mid = (l + r) / 2;
            while (l < r) {
                mid = (l + r) / 2;
                if (psum[mid] < lo) l = mid + 1;
                else if (psum[mid] >= lo && psum[mid] <= hi) {
                    ans = mid; break;
                } else {
                    r = mid;
                }
                ans = mid;
            }
        } else {
            //ll l = 0, r = n - 1; ll mid = (l + r) / 2;
            while (l < r) {
                mid = (l + r) / 2;
                if ((psum[mid] - psum[i - 1]) < lo) l = mid + 1;
                else if (psum[mid] - psum[i - 1] >= lo && (psum[mid] - psum[i - 1]) <= hi) {
                    ans = mid; break;
                }
                else r = mid;
                // ansl = l; ansr = r;
                ans = mid;
            }
        }
        if (ans == -1) {
            continue;
        } else {
            //cout << i << endl;
            if (i == 0) {
                if (psum[ans] >= lo && psum[ans] <= hi) {
                    cout << ans + 1 << endl;
                    for (ll j = 0; j <= ans; j++) {
                        cout << v[j].se << " ";
                    }
                    cout << endl;
                    return 0;
                }              
            } else {
                if (psum[ans] - psum[i - 1] >= lo && psum[ans] - psum[i - 1] <= hi) {
                    cout << ans - i + 1 << endl;
                    for (ll j = i; j <= ans; j++) {
                        cout << v[j].se << " ";
                    }
                    cout << endl;
                    return 0;
                }
            }
        }
    }
    cout << 0 << endl;
    return 0;
}

Compilation message (stderr)

/usr/bin/ld: /tmp/cci1UIFW.o: in function `main':
grader.cpp:(.text.startup+0x0): multiple definition of `main'; /tmp/ccSTI0cX.o:molecules.cpp:(.text.startup+0x0): first defined here
/usr/bin/ld: /tmp/cci1UIFW.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