Submission #725578

#	Time	Username	Problem	Language	Result	Execution time	Memory
725578		HaroldVemeno	Detecting Molecules (IOI16_molecules)	C++17	0 / 100	1 ms	340 KiB

molecules

#include <bits/stdc++.h>

#ifdef GUDEB
    #define D(x) cerr << #x << ": " << (x) << '\n';
    #define ifdeb if(true)
#else
    #define D(x) ;
    #define ifdeb if(false)
#endif

#define all(x) begin(x), end(x)

using namespace std;
using ull = unsigned long long;
using ll = long long;
// #define int ll;

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

    ll s = 0;
    int be = n;
    int eb = n;
    for(int i = 0; i < ws.size(); ++i) s += ws[i];

    while(true) {
        if(s > u) {
            if(be == 0) return {};
            --be;
            s -= ws[be];
        } else if(s < l) {
            if(eb == be) return {};
            --eb;
            s += ws[eb];
        } else {
            vector<int> res;
            for(int i = 0; i < be; ++i) res.push_back(ws[i]);
            for(int i = eb; i < n; ++i) res.push_back(ws[i]);
            return res;
        }
    }
}

Compilation message (stderr)

molecules.cpp: In function 'std::vector<int> find_subset(int, int, std::vector<int>)':
molecules.cpp:25:22: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   25 |     for(int i = 0; i < ws.size(); ++i) s += ws[i];
      |                    ~~^~~~~~~~~~~

• Subtask 1: 0 / 9
• Subtask 2: 0 / 10
• Subtask 3: 0 / 12
• Subtask 4: 0 / 15
• Subtask 5: 0 / 23
• Subtask 6: 0 / 31