Submission #971001

#	Time	Username	Problem	Language	Result	Execution time	Memory
971001		KasymK	Detecting Molecules (IOI16_molecules)	C++17	Compilation error	0 ms	0 KiB

molecules

#include "bits/stdc++.h"

using namespace std;

vector<int> find_subset(int l, int u, vector<int> w){
    int n = (int)w.size();
    vector<pair<int, int>> v;
    for(int i = 0; i < n; ++i)
        v.push_back({i, w[i]});
    auto cmp = [&](pair<int, int> a, pair<int, int> b) -> bool {
        if(a.second != b.second)
            return a.second > b.second;
        return a.first > b.first;
    };
    sort(v.begin(), v.end(), cmp);
    long long answer = 0;
    vector<int> ans;
    for(int i = 0, j = 0; j < n; ++j){
        answer += v[j].second;
        while(answer > u)
            answer -= v[i++].second;
        if(answer >= l){
            for(int k = i; k <= j; ++k)
                ans.push_back(v[k].first);
            return ans;
        }
    }
    return vector<int> {};
}

int main(){
    int n, l, u;
    scanf("%d%d%d", &n, &l, &u);
    vector<int> v(n);
    for(int &i : v)
        scanf("%d", &i);
    vector<int> ans = find_subset(l, u, v);
    for(int i : ans)
        printf("%d ", i);
    puts("");
    return 0;
}

Compilation message (stderr)

molecules.cpp: In function 'int main()':
molecules.cpp:33:10: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   33 |     scanf("%d%d%d", &n, &l, &u);
      |     ~~~~~^~~~~~~~~~~~~~~~~~~~~~
molecules.cpp:36:14: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   36 |         scanf("%d", &i);
      |         ~~~~~^~~~~~~~~~
/usr/bin/ld: /tmp/cceEandW.o: in function `main':
grader.cpp:(.text.startup+0x0): multiple definition of `main'; /tmp/ccMAhWEU.o:molecules.cpp:(.text.startup+0x0): first defined here
collect2: error: ld returned 1 exit status