Submission #654821

#	Time	Username	Problem	Language	Result	Execution time	Memory
654821		sandry24	Detecting Molecules (IOI16_molecules)	C++17	31 / 100	2 ms	596 KiB

molecules

#include <bits/stdc++.h>
using namespace std;
 
typedef long long ll;
typedef vector<int> vi;
typedef pair<int, int> pi;
#define pb push_back
#define mp make_pair
#define f first
#define s second

vi find_subset(int l, int u, vi w){
    vector<pi> a;
    for(int i = 0; i < w.size(); i++)
        a.pb(mp(w[i], i));
    sort(a.begin(), a.end());
    int sum = 0, left = 0, right = 0;
    for(int i = 0; i < w.size(); i++){
        if(sum + a[i].f <= u){
            sum += a[i].f;
            right = i;
        }
        else break;
    }
    while(sum < l && right != w.size()-1){
        sum -= a[left].f;
        sum += a[right+1].f;
        right++; left++;
        if(sum > u)
            return {};
    }
    if(sum < l || sum > u)
        return {};
    vi ans;
    for(int i = left; i <= right; i++)
        ans.pb(a[i].s);
    return ans;
}

Compilation message (stderr)

molecules.cpp: In function 'vi find_subset(int, int, vi)':
molecules.cpp:14:22: 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++)
      |                    ~~^~~~~~~~~~
molecules.cpp:18:22: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   18 |     for(int i = 0; i < w.size(); i++){
      |                    ~~^~~~~~~~~~
molecules.cpp:25:28: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   25 |     while(sum < l && right != w.size()-1){
      |                      ~~~~~~^~~~~~~~~~~~~

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