Submission #1208546

#	Time	Username	Problem	Language	Result	Execution time	Memory
1208546		raymoo_	Bank (IZhO14_bank)	C++20	100 / 100	113 ms	16852 KiB

bank

#include<bits/stdc++.h>
using namespace std; 
#define fi first
#define se second
#define pb push_back
#define eb emplace_back
#define umap unordered_map
#define prq priority_queue
#define vect vector
#define rs resize
#define bend(v) v.begin(),v.end()
#define pob pop_back
#define pof pop_front
#define lwb lower_bound
#define upb upper_bound
#define pii pair<int,int>
#define nextl cout << '\n'
#define el '\n'
#define deb cout<<"\nok\n";return 
#define ll long long
#define int long long
#define dbl long double
#define popcnt __builtin_popcount
#define ctz __builtin_ctz

const ll INF=902337203695775807, N=2e5+69, MOD=1e9+7;    

void ffopen(const string& file){
    if(file.empty())return;
    FILE *File = fopen((file+".inp").c_str(), "r");
    if (File == NULL)return;
    freopen((file + ".inp").c_str(), "r", stdin);
    freopen((file + ".out").c_str(), "w", stdout);
}

int pm(int a,const int b=1e9+7){return ((a%b)+b)%b;}
int sq(int x){return x*x;}
ll __lcm(ll a, ll b, const ll lim=LLONG_MAX){
    if(a == -1 || b == -1)return -1;
    ll g = __gcd(a,b);
    if(b/g > lim/a)return -1;
    return (a/g)*b;
}

int dp[1<<20][2];

void sol(){
    int n, m;
    cin >> n >> m;
    int a[n], b[m];
    for(int& i : a)cin >> i;
    for(int& i : b)cin >> i;
    memset(dp, -5, sizeof dp);
    dp[0][0] = dp[0][1] = 0;
    for(int mask=0;1<<m >mask;mask++){
        for(int i=0;m>i;i++){
            if(!(mask&(1<<i)))continue;
            int pmask = mask ^ (1<<i);
            if(dp[pmask][0] < 0)continue;
            int x = a[dp[pmask][0]];
            if(x == dp[pmask][1] + b[i]){
                dp[mask][0] = max(dp[mask][0], dp[pmask][0]+1);
                dp[mask][1] = 0;
            }else if(x > dp[pmask][1] + b[i]){
                dp[mask][0] = dp[pmask][0];
                dp[mask][1] = dp[pmask][1] + b[i];
            }
        }
        if(dp[mask][0] == n){
            cout << "YES";
            return ;
        }
    }cout << "NO";
}

signed main(){
    ios_base::sync_with_stdio(false);
    cin.tie(NULL);
    ffopen("");
    int t=1;
    //cin >> t;
    while(t--)sol();
}
/*
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*/

Compilation message (stderr)

bank.cpp: In function 'void ffopen(const string&)':
bank.cpp:32:12: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   32 |     freopen((file + ".inp").c_str(), "r", stdin);
      |     ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
bank.cpp:33:12: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   33 |     freopen((file + ".out").c_str(), "w", stdout);
      |     ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

• Subtask 1: 19 / 19
• Subtask 2: 25 / 25
• Subtask 3: 27 / 27
• Subtask 4: 29 / 29