Submission #1209977

#	Time	Username	Problem	Language	Result	Execution time	Memory
1209977		anfi	Detecting Molecules (IOI16_molecules)	C++20	Compilation error	0 ms	0 KiB

molecules

#include "molecules.h"
#include<bits/stdc++.h>
using namespace std;
#define fi first
#define se second
using int64 = long long;
#define pi pair<int64, int64>
#define artefak pair<pi, pi>
const int64 inf = -(1LL << 40);
const int64 mxn = (1 << 18);
int64 parent[4*mxn],sz[4*mxn],val[mxn*4][2],mx[mxn*4];

int64 find(int n){
    return parent[n] == n ? n : parent[n] = find(parent[n]);
}

int64 hitung(int n){
    if(sz[n]%2 == 0) return 0;
    return max(val[n][n&1], mx[n]);
}
vector<int64> find_subset(int l, int u, vector<int64> &a){
    int64 n = a.size();
    vector<pair<int64,int64>> wawi;
    for(int i = 0; i < n; i++) wawi.push_back({a[i], i});

    int64 ll = 0, rr = 0,sum = 0;
    while(ll < n){
        while(rr < n && sum < l) sum += wawi[rr++].fi;
        if(l <= sum && sum <= u){
            vector<int64> ans;
            for(int i = ll; i < rr; i++) ans.push_back(wawi[i].se);
            return ans;
        }
        sum -= wawi[ll++].fi;
        if(l <= sum && sum <= u){
            vector<int64> ans;
            for(int i = ll; i < rr; i++) ans.push_back(wawi[i].se);
            return ans;
        }
    }
    return vector<int>(0);
}

Compilation message (stderr)

molecules.cpp: In function 'std::vector<long long int> find_subset(int, int, std::vector<long long int>&)':
molecules.cpp:41:12: error: could not convert 'std::vector<int>(0, std::allocator<int>())' from 'vector<int>' to 'vector<long long int>'
   41 |     return vector<int>(0);
      |            ^~~~~~~~~~~~~~
      |            |
      |            vector<int>
molecules.h:1:9: warning: #pragma once in main file
    1 | #pragma once
      |         ^~~~
molecules_c.h:1:9: warning: #pragma once in main file
    1 | #pragma once
      |         ^~~~