Submission #1001666

#	Time	Username	Problem	Language	Result	Execution time	Memory
1001666		vjudge1	Detecting Molecules (IOI16_molecules)	C++17	0 / 100	1 ms	348 KiB

molecules

#include "molecules.h"
#include <bits/stdc++.h>
using namespace std;
#define endl '\n'
#define ll long long
#define pll pair<ll, ll>
ll p[200005];


std::vector<int> find_subset(int k, int u, std::vector<int> w) {
    vector<pair<int, int>>v;
    for (int i = 0; i<w.size(); i++){
        v.push_back({w[i], i});
    }
    sort(v.begin(), v.end());
    for (ll i = 0; i<v.size(); i++){
        p[i+1] = p[i] + v[i].first;
    }
    vector<int>f;
    ll x = -1, y = -1;
    for (ll i = 0; i<v.size(); i++){
        ll l = i, r = v.size()-1;
        while (l <= r){
            ll m = (l + r)/2;
            if (p[m+1] - p[i] >= k and p[m+1] - p[i] <= u and v[m].first - v[i].first <= (u - k)){
                x = i;
                y = m;
                break;
            }
            else if (p[m+1] - p[i] < k){
                l = m + 1;
            }
            else {
                r = m - 1;
            }
        }
        if (x != -1 and y != -1) break;
    }
    for (ll i = x; i<=y; i++){
        f.push_back(v[i].second);
    }
    return f;
}

Compilation message (stderr)

molecules.cpp: In function 'std::vector<int> find_subset(int, int, std::vector<int>)':
molecules.cpp:12:22: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   12 |     for (int i = 0; i<w.size(); i++){
      |                     ~^~~~~~~~~
molecules.cpp:16:21: warning: comparison of integer expressions of different signedness: 'long long int' and 'std::vector<std::pair<int, int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   16 |     for (ll i = 0; i<v.size(); i++){
      |                    ~^~~~~~~~~
molecules.cpp:21:21: warning: comparison of integer expressions of different signedness: 'long long int' and 'std::vector<std::pair<int, int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   21 |     for (ll i = 0; i<v.size(); 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