Submission #1093292

#	Time	Username	Problem	Language	Result	Execution time	Memory
1093292		Frostidian	Detecting Molecules (IOI16_molecules)	C++14	Compilation error	0 ms	0 KiB

molecules

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

vector < int > find_subset ( int left, int right, vector < int > y ){
    long long n = y.size();
    vector < long long > pref ( n + 5 ), suf ( n + 5 );
    vector < pair < long long, long long >> a ( n + 5 );

    for ( int i = 1; i <= n; i++ ) a[i].first = y[i - 1], a[i].second = i - 1;

    sort ( a.begin() + 1, a.begin() + 1 + n );

    for ( int i = 1; i <= n; i++ ) pref[i] = pref[i - 1] + a[i].first;
    for ( int i = n; i >= 1; i-- ) suf[i] = suf[i + 1] + a[i].first;
    vector < int > ans;

    for ( int i = n + 1; i >= 1; i-- ){
        int l = 1, r = i - 1, rec = 0;
        while ( l <= r ){
            int mid = ( l + r ) / 2;
            if ( pref[mid] + suf[i] <= left ){
                l = mid + 1;
                rec = mid;
            }
            else r = mid - 1;
        }

        if ( pref[rec] + suf[i] >= left && pref[rec] + suf[i] <= right ){
            for ( int j = 1; j <= rec; j++ ){
                ans.push_back(a[j].second);
            }

            for ( int j = n; j >= i; j-- ){
                ans.push_back(a[j].second);
            }

            sort ( ans.begin(), ans.end());

            return ans;
        }

        if ( rec + 1 <= i - 1 ){
            rec++;
            if ( pref[rec] + suf[i] >= left && pref[rec] + suf[i] <= right ){
                for ( int j = 1; j <= rec; j++ ){
                    ans.push_back(a[j].second);
                }

                for ( int j = n; j >= i; j-- ){
                    ans.push_back(a[j].second);
                }

                sort ( ans.begin(), ans.end());

                return ans;
            }
        }    
    }

    return ans;

}

signed main(){
    vector < int > isi {15, 17, 16, 18};
    vector < int > ans = find_subset ( 10, 20, isi );
    for ( auto x : ans ) cout << x << " ";
}

Compilation message (stderr)

/usr/bin/ld: /tmp/ccBlWqgk.o: in function `main':
grader.cpp:(.text.startup+0x0): multiple definition of `main'; /tmp/ccS9Lt8j.o:molecules.cpp:(.text.startup+0x0): first defined here
collect2: error: ld returned 1 exit status