Submission #1225972

#	Time	Username	Problem	Language	Result	Execution time	Memory
1225972		edga1	Detecting Molecules (IOI16_molecules)	C++20	0 / 100	1 ms	584 KiB

molecules

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

vector<int> dp[10005];
int s[10005];

vector<int> find_subset(int l, int u, vector<int> w){
    int n=w.size();
    int ma=0;
    for(int i=0; i<n; i++){
        if(w[i]>=l && w[i]<=u) return vector<int> (1,i);
        if(w[i]<l) ma=1;
    }
    if(ma==0) return vector<int> (0);
    set<int> sums,ne;
    sums.insert(0);
    for(int i=0; i<n; i++){
        for(auto a:ne) sums.insert(a);
        ne.clear();
        for(auto a:sums){
            int sum=a+w[i];
            if(sum>=l && sum<=u){
                vector<int> r=dp[a];
                r.push_back(i);
                return r;
            }
            if(sum<l && !s[sum]){
                s[sum]=1;
                vector<int> r=dp[a];
                r.push_back(i);
                dp[sum]=r;
                ne.insert(sum);
            }
        }
    }
    if(ma==0) return vector<int> (0);
}

Compilation message (stderr)

molecules.cpp: In function 'std::vector<int> find_subset(int, int, std::vector<int>)':
molecules.cpp:38:1: warning: control reaches end of non-void function [-Wreturn-type]
   38 | }
      | ^
molecules.h:1:9: warning: #pragma once in main file
    1 | #pragma once
      |         ^~~~
molecules_c.h:1:9: warning: #pragma once in main file
    1 | #pragma once
      |         ^~~~

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