Submission #232431

#	Time	Username	Problem	Language	Result	Execution time	Memory
232431		UserIsUndefined	Detecting Molecules (IOI16_molecules)	C++14	0 / 100	9 ms	384 KiB

molecules

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


int dp[500005];




std::vector<int> find_subset(int l, int u, std::vector<int> w) {
    int n = w.size();

    dp[0] = 1;

    int cont = 1;

    for (int i = 1 ; i <= n ; i++){
        int now = w[i-1];
        int cont1 = 0;
        for (int j = w[i-1] ; j <= 500000 ; j++){
            if ((dp[j - w[i - 1]])&&(dp[j- w[i - 1]] != i + 1)){dp[j] = i + 1; cont1++;}
            if (cont1 == cont)break;
        }
        cont+= cont1;
    }

    vector<int> ans;

    int k = -1;

    for (int i = l ; i <= u ; i++){
        if (dp[i] > 0){k = i ; break;}
    }

    if (k == -1)return ans;



    for (int i = dp[k] - 2 ; i >= 0 ; i--){
        if (w[i] > k)continue;
        if (dp[k - w[i]]){
            ans.push_back(i);
            k-= w[i];
            if (k == 0)return ans;
        }
    }

    return ans;

}

Compilation message (stderr)

molecules.cpp: In function 'std::vector<int> find_subset(int, int, std::vector<int>)':
molecules.cpp:19:13: warning: unused variable 'now' [-Wunused-variable]
         int now = w[i-1];
             ^~~

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