# | Time | Username | Problem | Language | Result | Execution time | Memory |
---|---|---|---|---|---|---|---|
1001495 | nathan4690 | Bank (IZhO14_bank) | C++14 | 87 ms | 16876 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.
#include <bits/stdc++.h>
#define ll long long
#define ld long double
#define el cout << '\n'
#define f1(i,n) for(ll i=1;i<=n;i++)
#define __file_name ""
using namespace std;
const ll maxn = 22, inf=1e18;
ll n,m,a[maxn],b[maxn],dp[(1 << 21) + 10], sum[(1 << 21) + 10];
bool nxt[(1 << 21) + 10];
int main(){
ios_base::sync_with_stdio(0);cin.tie(0);cout.tie(0);
if(fopen(__file_name ".inp", "r")){
freopen(__file_name ".inp","r",stdin);
freopen(__file_name ".out","w",stdout);
}
// code here
cin >> n >> m;
f1(i,n) cin >> a[i];
f1(i,m) cin >> b[i];
for(ll mask=0;mask<(1 << m);mask++){
dp[mask] = -inf;
sum[mask] = -inf;
}
dp[0] = 0;
sum[0] = 0;
for(ll mask=0;mask<(1 << m);mask++){
for(ll j=0;j<m;j++){
if(mask & (1 << j)){
if(sum[mask ^ (1 << j)] + b[j+1] == a[dp[mask ^ (1 << j)] + 1]){
if(dp[mask] < dp[mask ^ (1 << j)] + 1){
dp[mask] = dp[mask ^ (1 << j)] + 1;
sum[mask] = 0;
}
}else{
if(dp[mask] < dp[mask ^ (1 << j)]){
dp[mask] = dp[mask ^ (1 << j)];
sum[mask] = sum[mask ^ (1 << j)] + b[j+1];
}
}
}
}
}
if(*max_element(dp, dp+(1 << m)) == n) cout << "YES";
else cout << "NO";
/*
f1(i,n){
for(ll mask = 0;mask<(1 << m);mask++){
if(sum[mask] == a[i]){
nxt[mask] = 1;
continue;
}
for(ll j=0;j<m;j++){
if(mask & (1 << j)){
nxt[mask] |= nxt[mask ^ (1 << j)];
}
}
}
for(ll mask=0;mask<(1 << m);mask++){
dp[mask] = dp[mask] + nxt[mask];
nxt[mask] = 0;
}
}
for(ll mask=0;mask<(1 << m);mask++){
if(dp[mask] == n){
cout << "YES";
return 0;
}
}
cout << "NO";
*/
return 0;
}
/*
Code by: Nguyen Viet Trung Nhan
Cau Giay Secondary School
*/
Compilation message (stderr)
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