Submission #51646

#	Time	Username	Problem	Language	Result	Execution time	Memory
51646		ernestvw	Detecting Molecules (IOI16_molecules)	C++11	Compilation error	0 ms	0 KiB

molecules

#include "molecules.h"
#include <bits/stdc++.h>
using namespace std;

bool cmp(pair<long long, long long> a, pair<long long, long long> b) {
	return (a.first == b.first ? a.second < b.second : a.first < b.first);
}

vector<int> find_subset(int l, int u, vector<int> w) {
  vector<pair<long long, int>> W;
  vector<int> V;
  int n = (int)w.size();
  for(int i = 0; i < n; i++) W.push_back({w[i], i});
  sort(W.begin(), W.end(), cmp);
  long long mini = 0, maxi = 0;
  int I = 0;
  for(int i = 0; i < n; i++, I++) {
    mini += W[i].first;
    maxi += W[n - 1 - i].first;
    if((l <= maxi and maxi <= u) or (l <= mini and mini <= u) or (mini <= l and u <= maxi)) break;
  }
  if(I == n) return V;
  int j = 0;
  for(j = 0; j <= I; j++)
    V.push_back(j);
  while(mini < l) {
    if(V[I] == n - (j - I)) I--;
    mini -= W[V[I]].first;
    V[i] = n - (j - I);
    mini += W[V[I]].first;
  }
  for(int i = 0; i < (int)V.size(); i++) V[i] = W[V[i]].second;
  return V;
}

Compilation message (stderr)

molecules.cpp: In function 'std::vector<int> find_subset(int, int, std::vector<int>)':
molecules.cpp:29:7: error: 'i' was not declared in this scope
     V[i] = n - (j - I);
       ^