Submission #528188

#	Time	Username	Problem	Language	Result	Execution time	Memory
528188		perchuts	Detecting Molecules (IOI16_molecules)	C++17	46 / 100	202 ms	1528 KiB

molecules

#include <bits/stdc++.h>
#include "molecules.h"
#define maxn (int)(1e5+51)
#define all(x) x.begin(), x.end()
#define sz(x) (int) x.size()
#define endl '\n'
#define ll long long
#define pb push_back
#define ull unsigned long long
#define ii pair<int,int>
#define iii tuple<int,int,int>
#define inf 2000000001
#define mod 1000000007 //998244353
#define _ ios_base::sync_with_stdio(false);cin.tie(NULL);cout.tie(NULL);

using namespace std;

template<typename X, typename Y> bool ckmin(X& x, const Y& y) { return (y < x) ? (x=y,1):0; }
template<typename X, typename Y> bool ckmax(X& x, const Y& y) { return (x < y) ? (x=y,1):0; }
int dp[20005],pos[10001];
vector<int>where[10001];

vector<int> find_subset(int l, int u, vector<int> w) {
    for(int i=0;i<20005;i++)dp[i]=-1;
    int i=0;
    dp[0] = 0;
    vector<int>can,aux;can.pb(0);
    for(auto x:w){
        where[x].pb(i++);
        for(auto y:can){
            if(x+y<=u&&dp[x+y]==-1){
                aux.pb(x+y);
                dp[x+y] = y;
            }
        }
        for(auto z:aux)can.pb(z);
        aux.clear();
    }
    vector<int>ans;
    for(int i=l;i<=u;i++){
        if(dp[i]!=-1){
            while(i){
                ans.pb(i-dp[i]);
                i=dp[i];
            }
            break;
        }
    }
    for(auto& x:ans)x = where[x][pos[x]++];
    return ans;
}

// int main(){
//     int l,u,n;cin>>l>>u>>n;
//     vector<int>w;
//     for(int i=0;i<n;++i){
//         int x;cin>>x;w.pb(x);
//     }
//     vector<int>resp = find_subset(l,u,w);
//     if(!sz(resp))cout<<-1;
//     else for(auto x:resp)cout<<x<<" ";
//     cout<<endl; 
// }

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