Submission #770651

#	Time	Username	Problem	Language	Result	Execution time	Memory
770651		Benmath	Detecting Molecules (IOI16_molecules)	C++14	Compilation error	0 ms	0 KiB

molecules

//#include<bits/stdc++.h>

#include "molecules.h"
using namespace std;

std::vector<int> find_subset(int l, int u, std::vector<int> w) {
   long long int sum=0;
   vector<int>ans;
   vector<pair<long long int,int> >arr;
   int n=w.size();
   for(int i=0;i<w.size();i++){
    arr.push_back({w[i],i});
   }
   sort(arr.begin(),arr.end());
   if(arr[0].first>u){
    return ans;
   }else if(arr[0].first>=l and arr[0].first<=u){
   ans.push_back(arr[0].second);
   return ans;
   }else{
   if(arr[n-1].first>=l and arr[n-1].first<=u){
    ans.push_back(arr[n-1].second);
    return ans;
   }else{
   int ti1=0;
   int ti2=-1;
   long long int sum=0;
   for(int i=0;i<n;i++){
    sum=sum+arr[i].first;
    if(sum<l){
        ti1=i;
    }else if(sum>=l and sum<=u){
        for(int j=0;j<=i;j++){
            ans.push_back(arr[j].second);
        }
        return ans;
    }else{
        ti2=i;
        break;
    }
   }
if(ti2==-1){
    return ans;
}else{
long long int sum1=0;
for(int i=n-1;i>=(n-ti1-1);i--){
    sum1=sum1+arr[i].first;
}
if(sum1<l){
    return ans;
}
int j=n-1;
sum=sum-arr[ti2].first;
for(int i=ti1;i>=0;i--){
    sum=sum+arr[j].first-arr[i].first;
    if(sum>=l and sum<=u){
        for(int k=0;k<i;k++){
            ans.push_back(arr[k].second);
        }
        for(int k=j;k<=(n-1);k++){
            ans.push_back(arr[k].second);
        }
        return ans;
    }
    j--;
}
}
   }
   }
   for(int i=0;i<w.size();i++){
    if(w[i]<=u){
        sum=sum+w[i];
        ans.push_back(i);
    }
    if(sum>=l and sum<=u){
        break;
    }
   }
   if(sum>=l and sum<=u){
    return ans;
   }else{
   ans.clear();
   return ans;}
}
/*
int main() {
    int n, l, u;
    assert(3 == scanf("%d %d %d", &n, &l, &u));
    std::vector<int> w(n);
    for (int i = 0; i < n; i++)
        assert(1 == scanf("%d", &w[i]));
    std::vector<int> result = find_subset(l, u, w);


    printf("%d\n", (int)result.size());
    for (int i = 0; i < (int)result.size(); i++)
        printf("%d%c", result[i], " \n"[i == (int)result.size() - 1]);
}
*/

Compilation message (stderr)

molecules.cpp: In function 'std::vector<int> find_subset(int, int, std::vector<int>)':
molecules.cpp:11:17: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   11 |    for(int i=0;i<w.size();i++){
      |                ~^~~~~~~~~
molecules.cpp:14:4: error: 'sort' was not declared in this scope; did you mean 'short'?
   14 |    sort(arr.begin(),arr.end());
      |    ^~~~
      |    short
molecules.cpp:70:17: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   70 |    for(int i=0;i<w.size();i++){
      |                ~^~~~~~~~~