Submission #1358300

#	Time	Username	Problem	Language	Result	Execution time	Memory
1358300		okahak71	Rack (eJOI19_rack)	C++20	Compilation error	0 ms	0 KiB

rack

#pragma GCC optimize("Ofast,unroll-loops")
#pragma GCC optimize("O3")
#include <bits/stdc++.h>
#ifndef ONLINE_JUDGE
    #include "debug.h"
#else
    #define debug(...)
#endif
#define ll long long
#define pll array<ll, 2>
#define lll array<ll, 3>
#define pb push_back
#define endl '\n'
#define all(X) X.begin(), X.end()
#define allr(X) X.rbegin(), X.rend()
using namespace std;

const ll mod = 1e9 + 7;

void _(){
    auto bp = [&](ll a, ll b){
        ll res = 1;
        while(b){
            if(b % 2) (res *= a) %= mod;
            (a *= a) %= mod; b /= 2;
        }
        return res;
    };
    ll n, k, res = 1; cin >> n >> k; k--;
    for(ll i = min(63ll, n); i >= 0; i--){
        if(k & (1ll << i)) (res += bp(2, n - i - 1)) %= mod;
    }
    cout << res << endl;
}

signed main(){
    ios_base::sync_with_stdio(0);
    cin.tie(0); cout.tie(0);
    ll t = 1; //cin >> t;
    while(t--) _();
}

Compilation message (stderr)

rack.cpp:5:14: fatal error: debug.h: No such file or directory
    5 |     #include "debug.h"
      |              ^~~~~~~~~
compilation terminated.