Submission #519775

#	Time	Username	Problem	Language	Result	Execution time	Memory
519775		yhlas	Detecting Molecules (IOI16_molecules)	C++14	10 / 100	1 ms	204 KiB

molecules

#include "bits/stdc++.h"
using namespace std;
int o,n,b,c,p[200005],e,l,r,md,jog,k;
vector<int> a,d;
pair <int, int> u[200005];
vector<int> find_subset(int x, int y, vector<int> v){
	n = v.size();
	for (int i = 0; i < v.size(); i++) u[i].first = v[i], u[i].second = i;
	sort(u, u + n);
	p[0] = u[0].first;
	for (int i = 1; i < n; i++) p[i] = p[i - 1] + u[i].first;
	for (int i = 0; i < n; i++){
		a.push_back(u[i].second);
		if (x <= p[i] and p[i] <= y) return a;
	}
	a.clear();
	for (int i = 1; i < n; i++){
		l = i,r = n - 1,md,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);
	return a;
}

Compilation message (stderr)

molecules.cpp: In function 'std::vector<int> find_subset(int, int, std::vector<int>)':
molecules.cpp:8:20: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
    8 |  for (int i = 0; i < v.size(); i++) u[i].first = v[i], u[i].second = i;
      |                  ~~^~~~~~~~~~
molecules.cpp:18:29: warning: right operand of comma operator has no effect [-Wunused-value]
   18 |   l = i,r = n - 1,md,jog = -1;
      |                             ^

• Subtask 1: 0 / 9
• Subtask 2: 10 / 10
• Subtask 3: 0 / 12
• Subtask 4: 0 / 15
• Subtask 5: 0 / 23
• Subtask 6: 0 / 31