Submission #416967

#	Time	Username	Problem	Language	Result	Execution time	Memory
416967		DEQK	Detecting Molecules (IOI16_molecules)	C++17	Compilation error	0 ms	0 KiB

molecules

#include <molecules.h>
#include <bits/stdc++.h>

#define ll long long
using namespace std;
const int N = 100100;

vector<int> find_subset(int l,int u, vector<int> w) {
	vector<int> res;
	vector<ll> pref = {0};
	int n = w.size();
	vector<pair<int, int>> a(n);
	for(int i = 0; i < n; i++) {
		a[i] = {w[i], i};
	}
	sort(a.begin(), a.end());
	for(int i = 0; i < n; i++) {
		pref.push_back(pref.back() + a[i].first);
	}
	int ans = -1;
	int j = 0;
	for(int i = 0; i < n; i++) {
		j = min(j, i);
		while(j <= n && pref[j] - pref[i] < l) j++;
		if(pref[j] - pref[i] >= l && pref[j] - pref[i] <= r) {
			int p = 0;
			for(i++; i <= j; i++) {
				res.push_back(a[i - 1].second);	
			}
			break;
		}
	}
	return res;
}

Compilation message (stderr)

molecules.cpp: In function 'std::vector<int> find_subset(int, int, std::vector<int>)':
molecules.cpp:25:53: error: 'r' was not declared in this scope
   25 |   if(pref[j] - pref[i] >= l && pref[j] - pref[i] <= r) {
      |                                                     ^
molecules.cpp:26:8: warning: unused variable 'p' [-Wunused-variable]
   26 |    int p = 0;
      |        ^
molecules.cpp:20:6: warning: unused variable 'ans' [-Wunused-variable]
   20 |  int ans = -1;
      |      ^~~