Submission #434564

#	Time	Username	Problem	Language	Result	Execution time	Memory
434564		Kanaifu	Detecting Molecules (IOI16_molecules)	C++14	0 / 100	7 ms	8140 KiB

molecules

#include <bits/stdc++.h>
#include "molecules.h"
//#include "grader.cpp"

using namespace std;
#define pb push_back
#define x first
#define y second

vector<int> find_subset(int l, int u, vector<int> w)
{
    vector <int> ret;
    pair<int,int> dp[1001][1001];
    for (int i=0; i<=1000; i++)
    {
        dp[i][0] = {1, -1};
        for (int j=1; j<=1000; j++)
        {
            dp[i][j] = {0, -1};
        }
    }
    for (int i=0; i<w.size(); i++)
    {
        for (int j=u; j>=0; j--)
        {
            if (dp[i][j].x)
            {
                if (j+w[i]<=u)
                {
                    dp[i][j+w[i]] = {1, i};
                }
            }
            else if (i>0)
            {
                dp[i][j] = dp[i-1][j];
            }
        }
    }
    for (int j=l; j<=u; j++)
    {
        if (dp[w.size()-1][j].x)
        {
            int poz = w.size()-1;
            int weight = j;
            while (dp[poz][weight].y != -1)
            {
                ret.pb(dp[poz][weight].y);
                weight -= w[dp[poz][weight].y];
                if (poz==0)
                {
                    break;
                }
                poz = dp[poz-1][weight].y;
            }
            break;
        }
    }
    return ret;
}

/*

4 15 17
6 8 8 7

*/

Compilation message (stderr)

molecules.cpp: In function 'std::vector<int> find_subset(int, int, std::vector<int>)':
molecules.cpp:22:20: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   22 |     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