Submission #290783

#	Time	Username	Problem	Language	Result	Execution time	Memory
290783		REALITYNB	Detecting Molecules (IOI16_molecules)	C++14	Compilation error	0 ms	0 KiB

molecules

#include <bits/stdc++.h> 
#define ll long long 
#define all(a) a.begin(),a.end() 
#define mp make_pair
#define F first 
#define S second 
#define pii pair<int,int> 
using namespace std; 
vector<int> find_subset(int l , int r , vector<int> a){
    vector<pii> w(n) ; 
    for(int i=0;i<n;i++){
        w[i].F=a[i] ; 
        w[i].S =i ; 
    }
    sort(all(w)) ; 
    for(int i=1;i<n;i++) w[i].F+=w[i-1].F ; 
    for(int i=x-1;i<n;i++){
        int L =i-x ; 
        if(L==-1) sum = 0 ; 
        else sum= w[L].S ;
        if(r>=w[i].F-sum&&w[i].F-sum>=L){
            vector<int> ans ; 
            for(int j=i-x+1;j<=i;j++) ans.push_back(w[j].S) ; 
            return ans ; 
        } 

    }
    vector<int> poop ; 
    return poop ; 
}

Compilation message (stderr)

molecules.cpp: In function 'std::vector<int> find_subset(int, int, std::vector<int>)':
molecules.cpp:10:19: error: 'n' was not declared in this scope
   10 |     vector<pii> w(n) ;
      |                   ^
molecules.cpp:17:15: error: 'x' was not declared in this scope
   17 |     for(int i=x-1;i<n;i++){
      |               ^
molecules.cpp:19:19: error: 'sum' was not declared in this scope
   19 |         if(L==-1) sum = 0 ;
      |                   ^~~
molecules.cpp:20:14: error: 'sum' was not declared in this scope
   20 |         else sum= w[L].S ;
      |              ^~~
molecules.cpp:21:22: error: 'sum' was not declared in this scope
   21 |         if(r>=w[i].F-sum&&w[i].F-sum>=L){
      |                      ^~~