Submission #129786

#	Time	Username	Problem	Language	Result	Execution time	Memory
129786		miguel	Detecting Molecules (IOI16_molecules)	C++14	Compilation error	0 ms	0 KiB

molecules

#include<bits/stdc++.h>
using namespace std;
#define rc(x) return cout<<x<<endl,0
#define pb push_back
#define dbg(x) cout << #x << '=' << x << '\n';
#define ll long long
#define int ll
#define sz size()
#define x first
#define y second
#define pi pair <int, int>
#define pii pair <int, pi>
#define vi vector <int>
const ll mod = 1e9 + 7;

vi find_subset(int l, int u, vi w){
    vector<pi> v;
    v.pb({0, 0});
    int n=w.size();
    for(int i=0; i<w.size(); i++) v.pb({w[i], i+1});
    sort(v.begin(), v.end());

    int s[200002];
    s[0]=0;
    for(int i=1; i<=n; i++) s[i]=s[i-1]+v[i].x;

    int k=0;
    while(s[k+1]-s[1]<l && s[n]-s[n-k]<l){k++;}
    if(k==0) return {};
    for(int i=1; i<=n-k+1; i++){
        if(s[i+k-1]-s[i-1]>=l && s[i+k-1]-s[i-1]<=u){
            vector <int> ans;
            for(int j=i; j<=i+k-1; j++) ans.pb(v[j].y);
            return ans;
        }
    }
    return {};
}

Compilation message (stderr)

molecules.cpp: In function 'std::vector<long long int> find_subset(long long int, long long int, std::vector<long long int>)':
molecules.cpp:20:19: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
     for(int i=0; i<w.size(); i++) v.pb({w[i], i+1});
                  ~^~~~~~~~~
/tmp/cc1cK0iq.o: In function `main':
grader.cpp:(.text.startup+0x152): undefined reference to `find_subset(int, int, std::vector<int, std::allocator<int> >)'
collect2: error: ld returned 1 exit status