Submission #489078

#	Time	Username	Problem	Language	Result	Execution time	Memory
489078		1ne	Detecting Molecules (IOI16_molecules)	C++14	Compilation error	0 ms	0 KiB

molecules

#include "molecules.h"
#include<bits/stdc++.h>
using namespace std;
std::vector<int> find_subset(int l, int u, std::vector<int>& arr) {
    int n = arr.size();    
    map<int,int>dp;
    vector<int>par(u+1,-1);
    dp[0]=1;
    int val = -1;
    for (int i = 0 ;i<n;++i){ 
    	for (auto j:dp){
    		int x = j.first;
    		if (x+arr[i]>u)continue;
    		if (par[x+arr[i]]!=-1)continue;
    		if (par[x]==i)continue;
    		dp[x+arr[i]]=true;
    		par[x+arr[i]]=i;
    		if (x+arr[i]>=l&&x+arr[i]<=u){
    			val = x+arr[i];
    			break;
    		}
    	}
    	if (val!=-1)break;	
    }
    vector<int>ans;
    while(val>0){
    	ans.push_back(par[val]);
    	val-=arr[par[val]];
    }
    return ans;
}

Compilation message (stderr)

/usr/bin/ld: /tmp/ccWu1wX9.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