Submission #21176

#	TimeUTC-0	Username	Problem	Language	Result	Execution time	Memory
21176	2017-04-07 13:26:06	sbansalcs	Detecting Molecules (IOI16_molecules)	C++14	100 / 100	79 ms	6988 KiB

molecules

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#include "molecules.h"
#include <algorithm>
#include <assert.h>
#include <iostream>
typedef long long ll;
using namespace std;
const int N = 2e5+5;
pair<int,int> arr[N];
ll sums[N];
std::vector<int> find_subset(int l, int u, std::vector<int> w) {
  vector<int> ans;
  int n=w.size();
  for(int i=1;i<=n;i++) {
    arr[i].first=w[i-1];
    arr[i].second=i-1;
  }
  sort(arr+1,arr+1+n);
  for(int i=1;i<=n;i++) {
    if(arr[i].first>=l && arr[i].first<=u)  {
      ans.push_back(arr[i].second);
      return ans;
    }
    sums[i]=sums[i-1]+arr[i].first;
  }
  int k=0;
  if(sums[n]>=l && sums[n]<=u)  {
    for(int i=0;i<n;i++)  {
      ans.push_back(i);
    }
    return ans;
 
 
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Compilation message (stderr)

molecules.cpp: In function 'std::vector<int> find_subset(int, int, std::vector<int>)':
molecules.cpp:25:6: warning: unused variable 'k' [-Wunused-variable]
  int k=0;
      ^

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