# | Time | Username | Problem | Language | Result | Execution time | Memory |
---|---|---|---|---|---|---|---|
465194 | dattranxxx | Detecting Molecules (IOI16_molecules) | C++11 | 0 ms | 0 KiB |
This submission is migrated from previous version of oj.uz, which used different machine for grading. This submission may have different result if resubmitted.
/*
* Author : shora
*/
#include <bits/stdc++.h>
#define print(_v) for (auto &_ : _v) {cerr << _ << ' ';} cerr << endl;
#include "molecules.h"
using namespace std;
using ll = long long;
const int oo = 1e9;
const int N = 2e5;
map<int, ll> dp[N];
map<int, bool> t[N];
int n;
ll call(int i, int l, vector<int>& a) {
if (i == -1)
return l <= 0 ? 0 : oo;
if (dp[i].count(l))
return dp[i][l];
ll x = call(i-1, l-a[i], a) + a[i], y = call(i-1, l, a);
if (x < y) {
t[i][l] = 1;
return dp[i][l] = x;
} else {
t[i][l] = 0;
return dp[i][l] = y;
}
}
vector<int> find_subset(int l, int u, std::vector<int>& a) {
n = a.size();
call(n-1, l, a);
vector<int> res;
if (dp[n-1][l] <= u) {
n = n-1;
while (n) {
if (t[n][l]) {
res.push_back(n+1);
l -= a[n];
}
n--;
}
}
return res;
}