Submission #739015

#	Time	Username	Problem	Language	Result	Execution time	Memory
739015		ThylOne	Detecting Molecules (IOI16_molecules)	C++14	0 / 100	1079 ms	304 KiB

molecules

#include "molecules.h"
#include<bits/stdc++.h>
using namespace std;
std::vector<int> find_subset(int l, int u, std::vector<int> w) {
	
	vector<int> prefixSum;
	prefixSum.push_back(0);
	for(int i=0;i<w.size();i++){
		prefixSum.push_back(prefixSum[i]+w[i]);
	}
	vector<int> R;
	for(int I=0;I<w.size();I++){
		
		if(w[I]>=l && w[I]<=u){return {I};}
			
		
		int left = 0;
		int right = I;
		int score = prefixSum[right+1]-prefixSum[left];
		while(!(score>=l && score<=u) && left<right){
			int mid = (left+right)/2;
            score = prefixSum[I+1]-prefixSum[mid];
			if(score>u){
				left = mid;
			}else if(score<l){
				right=mid-1;
			}else{
				
			}
			
		}
		if(score>=l && score<=u){
			
				return {left,I};
		}
	}
	return {};
}

Compilation message (stderr)

molecules.cpp: In function 'std::vector<int> find_subset(int, int, std::vector<int>)':
molecules.cpp:8:15: 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<w.size();i++){
      |              ~^~~~~~~~~
molecules.cpp:12:15: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   12 |  for(int I=0;I<w.size();I++){
      |              ~^~~~~~~~~

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