Submission #397032

#	Time	Username	Problem	Language	Result	Execution time	Memory
397032		danielcm585	Detecting Molecules (IOI16_molecules)	C++14	100 / 100	71 ms	7284 KiB

molecules

#include "molecules.h"

#include <bits/stdc++.h>
using namespace std;

#define fi first
#define se second

typedef long long ll;
typedef pair<int,int> ii;

vector<int> find_subset(int a, int b, vector<int> w) {
    vector<ii> v;
    for (int i = 0; i < w.size(); i++) v.push_back({w[i],i});
    sort(v.rbegin(),v.rend());
    ll sum = 0;
    vector<ii> tmp;
    while (!v.empty()) {
        ii cur = v.back();
        if (sum+cur.fi > b) break;
        sum += cur.fi;
        tmp.push_back(cur);
        v.pop_back();
    }
    for (int i = 0; i < min(v.size(),tmp.size()); i++) {
        if (sum+v[i].fi-tmp[i].fi <= b) {
            sum += v[i].fi-tmp[i].fi;
            tmp[i] = v[i];
        }
    }
    vector<int> res;
    if (sum >= a) {
        for (auto i : tmp) res.push_back(i.se);
    }
    return res;
}

Compilation message (stderr)

molecules.cpp: In function 'std::vector<int> find_subset(int, int, std::vector<int>)':
molecules.cpp:14:23: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   14 |     for (int i = 0; i < w.size(); i++) v.push_back({w[i],i});
      |                     ~~^~~~~~~~~~
molecules.cpp:25:23: warning: comparison of integer expressions of different signedness: 'int' and 'const long unsigned int' [-Wsign-compare]
   25 |     for (int i = 0; i < min(v.size(),tmp.size()); i++) {
      |                     ~~^~~~~~~~~~~~~~~~~~~~~~~~~~

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