Submission #407075

#	Time	Username	Problem	Language	Result	Execution time	Memory
407075		dxz05	Detecting Molecules (IOI16_molecules)	C++14	Compilation error	0 ms	0 KiB

molecules

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

using namespace std;

const int MAXN = 5e5 + 3e2;

typedef long long ll;

pair<ll, int> a[MAXN];


vector<int> find_subset(int l, int u, vector<int> w) {
    int n = w.size();

    for (int i = 0; i < n; i++){
        a[i + 1] = make_pair(w[i], i);
        if (l <= w[i] && w[i] <= u){
            return {i};
        }
    }

    sort(a + 1, a + n + 1);

    for (int i = 1; i <= n; i++){
        vector<int> ans;
        ll sum = 0;
        for (int j = i; j <= n; j++){
            sum += a[j].first;
            ans.push_back(a[j].second);
            if (l <= sum && sum <= r) return ans;
        }
    }

    return vector<int>(0);
}

Compilation message (stderr)

molecules.cpp: In function 'std::vector<int> find_subset(int, int, std::vector<int>)':
molecules.cpp:31:36: error: 'r' was not declared in this scope
   31 |             if (l <= sum && sum <= r) return ans;
      |                                    ^