Submission #519791

#	Time	Username	Problem	Language	Result	Execution time	Memory
519791		yhlas	Detecting Molecules (IOI16_molecules)	C++14	Compilation error	0 ms	0 KiB

molecules

#include "bits/stdc++.h"
using namespace std;
int n, e, l, r, md, jog;
vector<int> a,d;
map <int, long long> p;
vector <pair <int, int>> u;

vector<int> find_subset(int x, int y, vector<int> v){
	ios::sync_with_stdio(false); cin.tie(0); cout.tie(0);
	n = v.size();
	for (int i = 0; i < n; i++) u.push_back({v[i], i});
	sort(u.begin(), u.end());
	for (int i = 0; i < n; i++) p[i] = p[i - 1] + u[i].first;
	for (int i = 0; i < n; i++){
		l = i; r = n - 1; jog = -1;
		while (l <= r){
			md = (l + r) / 2;
			if (y < p[md] - p[i - 1]) r = md - 1;
			else if (x > p[md] - p[i - 1]) l = md + 1;
			else{
				e = i; jog = md; break;
			}
		}
		if (jog != -1) break;
	}
	for (int i = e; i <= jog; i++) a.push_back(u[i].second);
	sort(a.begin(), a.end());
	return a;
}
int main(){
	cin >> o >> b >> c;
	for (int i = 0; i < o; i++) cin >> k, d.push_back(k);
	find_subset(b, c, d);
	for (int i = 0; i < a.size(); i++) cout << a[i] << " ";
}

Compilation message (stderr)

molecules.cpp: In function 'int main()':
molecules.cpp:31:9: error: 'o' was not declared in this scope
   31 |  cin >> o >> b >> c;
      |         ^
molecules.cpp:31:14: error: 'b' was not declared in this scope
   31 |  cin >> o >> b >> c;
      |              ^
molecules.cpp:31:19: error: 'c' was not declared in this scope
   31 |  cin >> o >> b >> c;
      |                   ^
molecules.cpp:32:37: error: 'k' was not declared in this scope
   32 |  for (int i = 0; i < o; i++) cin >> k, d.push_back(k);
      |                                     ^
molecules.cpp:34:20: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   34 |  for (int i = 0; i < a.size(); i++) cout << a[i] << " ";
      |                  ~~^~~~~~~~~~