Submission #698480

#	Time	Username	Problem	Language	Result	Execution time	Memory
698480		1zaid1	Detecting Molecules (IOI16_molecules)	C++17	0 / 100	1 ms	212 KiB

molecules

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

vector<int> find_subset(int l, int r, vector<int> v) {
    int p = 0, sum = 0, e = v.size();
    while (p < v.size() && sum + v[p] <= l) sum += v[p++];
    if (sum == v.size()) return vector<int>(0);

    vector<int> a;
    for (int i = 0; i < p; i++) a.push_back(i);
    while (p && sum < l) {
        a[--p] = --e;
        sum += v[e]-v[p];
    } sum = 0;
    for (int i:a) sum += i;

    while (p < e && sum < l) {
        sum += v[p++];
    }
    
    if (l <= sum && sum <= r) {
        for (int &i:a) i++;
        return a;
    } else return vector<int>(0);
}

Compilation message (stderr)

molecules.cpp: In function 'std::vector<int> find_subset(int, int, std::vector<int>)':
molecules.cpp:7:14: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
    7 |     while (p < v.size() && sum + v[p] <= l) sum += v[p++];
      |            ~~^~~~~~~~~~
molecules.cpp:8:13: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
    8 |     if (sum == v.size()) return vector<int>(0);
      |         ~~~~^~~~~~~~~~~

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