Submission #823538

#	Time	Username	Problem	Language	Result	Execution time	Memory
823538		trucmai	Detecting Molecules (IOI16_molecules)	C++17	9 / 100	1 ms	212 KiB

molecules

#include <bits/stdc++.h>
using namespace std;
#define ll long long
#include "molecules.h"

std::vector<int> find_subset(int l, int u, std::vector<int> w) {
    sort(w.begin(),w.end()); 
    vector<int>idx(w.size()); 
    for(int i = 0;i < w.size();++i) idx[i] = i; 
    sort(idx.begin(),idx.end(),[&](int x,int y){return w[x] < w[y];}); 
    ll ptr = 0,sum = 0; 
    vector<int>res; 
    for(ll i = 0;i < w.size();++i){
        sum += w[idx[i]]; 
        while(sum > u) sum -= w[idx[ptr++]]; 
        while(sum >= l){
            for(ll j = ptr;j <= i;++j)
                res.push_back(idx[j]);
            return res;
        }
    }
    return vector<int>{};
}

Compilation message (stderr)

molecules.cpp: In function 'std::vector<int> find_subset(int, int, std::vector<int>)':
molecules.cpp:9:21: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
    9 |     for(int i = 0;i < w.size();++i) idx[i] = i;
      |                   ~~^~~~~~~~~~
molecules.cpp:13:20: warning: comparison of integer expressions of different signedness: 'long long int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   13 |     for(ll i = 0;i < w.size();++i){
      |                  ~~^~~~~~~~~~

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