Submission #288843

#	Time	Username	Problem	Language	Result	Execution time	Memory
288843		Basilhijaz	Detecting Molecules (IOI16_molecules)	C++17	9 / 100	2 ms	1408 KiB

molecules

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

using namespace std;

const int N = 1e4 + 5;
bool dp[N][N];
int n;
vector<int> ans;
bool ok = 0;
void get(vector<int> arr, int i, int sum, vector<int> an){
    if(ok)return;
    if(i == 0 && sum != 0 && dp[n - 1][sum]){
        an.push_back(i);
        for(int a = 0; a < an.size(); a++){
            ans.push_back(an[a]);
        }
        ok = 1;
        return;
    }
    if(i == 0 && sum == 0){
        for(int a = 0; a < an.size(); a++){
            ans.push_back(an[a]);
        }
        ok = 1;
        return;
    }
    if(dp[i - 1][sum]){
        get(arr, i - 1, sum, an);
    }
    if(sum >= arr[i] && dp[i - 1][sum - arr[i]]){
        an.push_back(i);
        get(arr, i - 1, sum - arr[i], an);
    }
}
std::vector<int> find_subset(int l, int u, std::vector<int> w) {
    n = w.size();
    for(int j = 0; j < n; j++){
        for(int i = 0; i <= j; i++){
            dp[i][w[j]] = 1;
        }
        dp[j][0] = 1;
    }
    for(int i = 1; i < n; i++){
        for(int j = 0; j <= 1e4 + 1; j++){
            if(j >= w[i]){
                dp[i][j] = dp[i - 1][j - w[i]] || dp[i - 1][j];
            }
            else{
                dp[i][j] = dp[i - 1][j];
            }
        }
    }
    for(int i = l; i <= u; i++){
        if(dp[n - 1][i]){
            get(w, n - 1, i, ans);
            break;
        }
    }
    sort(ans.begin(), ans.end());
    return ans;
}

Compilation message (stderr)

molecules.cpp: In function 'void get(std::vector<int>, int, int, std::vector<int>)':
molecules.cpp:15:26: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   15 |         for(int a = 0; a < an.size(); a++){
      |                        ~~^~~~~~~~~~~
molecules.cpp:22:26: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   22 |         for(int a = 0; a < an.size(); a++){
      |                        ~~^~~~~~~~~~~

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