Submission #1188404

#	Time	Username	Problem	Language	Result	Execution time	Memory
1188404		lioow	Detecting Molecules (IOI16_molecules)	C++20	Compilation error	0 ms	0 KiB

molecules

#include <bits/stdc++.h>
#include <ext/pb_ds/assoc_container.hpp>
#define pb push_back
#define int long long
#define repp(i,x,n) for(int i=x;i<=n;i++)
#define rep(i,x,n) for(int i=x;i>=n;i--)
#define cy cout<<"YES"<<endl
#define cn cout<<"NO"<<endl
#define r0 return 0
#define fi first
#define se second
#define liow ios_base::sync_with_stdio(false);cin.tie(NULL);cout.tie(NULL)
#define jelek cout<<"jelek"<<endl
#define pii pair<int,int>
#define all(v) v.begin(),v.end()
#define pi pair<pair<int,int>,pair<int,int>>
#define p3 pair<int,pair<int,int>>
#define p2
#define tp tuple<int,int,int>
#define fl fflush(stdout)
#define lb long double
#define p5 pair<int,pair<pair<int,int>,pair<int,int>>>
//#pragma GCC optimize ("O2")
//#pragma GCC optimize ("unroll-loops")  
using namespace std;
int dx[4]={0,0,1,1};
int dy[4]={0,1,0,1};
using namespace __gnu_pbds;
typedef tree<int,null_type,less<int>,rb_tree_tag,tree_order_statistics_node_update> ordered_set;
typedef tree<pair<int,int>, null_type,  less<pair<int,int>>, rb_tree_tag, tree_order_statistics_node_update> ordered_multiset;
const int mod=1e9+7,maxn=1e5+5,N=5e5+5,INF=1e18;
const int MOD=998244353;
//const int MOD=1e6+3;
mt19937_64 rng((unsigned int) chrono::steady_clock::now().time_since_epoch().count());
pii dir[8]={{-1,0},{-1,1},{0,1},{1,1},{1,0},{1,-1},{0,-1},{-1,-1}};

vector<int> find_subset(int d,int u,vector<int>w){
	vector<int>ans;
	int l=0,r=0,n=w.size()-1;
	vector<pii>a;
	repp(i,0,n){
		a.pb({w[i],i});
	}
	sort(all(a));
	for(;l<n && r<n;r++){
		sum+=a[r].fi;
		while(sum>u){
			sum-=a[l].fi;
			l++;
		}
		if(d<=sum && sum<=u){
			repp(i,l,r){
				ans.pb(a[i].se);
			}
			return ans;
		}
	}
	return {};
}

//signed main(){
//  liow;
//  int t=1;
//// cin>>t;
//  while(t--){
//  	solve();
//  }
//}

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:46:17: error: 'sum' was not declared in this scope
   46 |                 sum+=a[r].fi;
      |                 ^~~
molecules.h:1:9: warning: #pragma once in main file
    1 | #pragma once
      |         ^~~~
molecules_c.h:1:9: warning: #pragma once in main file
    1 | #pragma once
      |         ^~~~