Submission #654817

#	Time	Username	Problem	Language	Result	Execution time	Memory
654817		sandry24	Detecting Molecules (IOI16_molecules)	C++17	Compilation error	0 ms	0 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+1));
    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)
        return {};
    vi ans;
    for(int i = left; i <= right; i++)
        ans.pb(a[i].s);
    return ans;
}

void solve(){
    vi w = {15, 17, 16, 18};
    vi ans = find_subset(10, 20, w);
    for(auto i : ans)
        cout << i << ' ';
}
 
int main(){
    ios::sync_with_stdio(0); cin.tie(0);
    int t = 1;
    //cin >> t;
    while(t--){
        solve();
    }
}

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){
      |                      ~~~~~~^~~~~~~~~~~~~
/usr/bin/ld: /tmp/cc1YGQkz.o: in function `main':
grader.cpp:(.text.startup+0x0): multiple definition of `main'; /tmp/ccwMr5xA.o:molecules.cpp:(.text.startup+0x0): first defined here
collect2: error: ld returned 1 exit status