Submission #301658

#	Time	Username	Problem	Language	Result	Execution time	Memory
301658		chirathnirodha	Detecting Molecules (IOI16_molecules)	C++17	46 / 100	1056 ms	2544 KiB

molecules

#include "molecules.h"
#include<bits/stdc++.h>
using namespace std;
 
vector<int> find_subset(int l, int u, vector<int> w) {
    int n=w.size();
    bool valid[u+1];
    memset(valid,false,sizeof(valid));
    int parent[u+1];
    vector<int> v;
    v.push_back(0);
    valid[0]=true;
    int foundval=-1;
    for(int i=0;i<n;i++){
        vector<int> temp;
        for(int j=0;j<v.size();j++){
            int newindex=v[j]+w[i];
            if(newindex>u ||valid[newindex]==true)continue;
            temp.push_back(newindex);
            valid[newindex]=true;
            parent[newindex]=i;
            if(l<=newindex && newindex<=u){
                foundval=newindex;
                break;
            }
        }
        if(foundval!=-1)break;
        for(int j=0;j<temp.size();j++)v.push_back(temp[j]);
    }
    vector<int> ans;
    if(foundval!=-1){
        while(foundval!=0){
            ans.push_back(parent[foundval]);
            foundval-=w[parent[foundval]];
        }
    }
    return ans;
}

Compilation message (stderr)

molecules.cpp: In function 'std::vector<int> find_subset(int, int, std::vector<int>)':
molecules.cpp:16:22: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   16 |         for(int j=0;j<v.size();j++){
      |                     ~^~~~~~~~~
molecules.cpp:28:22: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   28 |         for(int j=0;j<temp.size();j++)v.push_back(temp[j]);
      |                     ~^~~~~~~~~~~~

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