Submission #424771

#	Time	Username	Problem	Language	Result	Execution time	Memory
424771		A_D	Fibonacci representations (CEOI18_fib)	C++14	0 / 100	1 ms	288 KiB

fib

#include <bits/stdc++.h>
#define int long long
#define ii pair<int,int>
#define F first
#define S second
#define du long double
using namespace std;
const int MOD=1e9+7;
void solve()
{
    int n,ans=1;
    cin>>n;
    while(n--){
        int a;
        cin>>a;
        if(a!=1)ans*=2;
        ans%=MOD;
    }
    cout<<ans<<endl;
}
main()
{
    int t=1;
    //cin>>t;
    while(t--)solve();
}

Compilation message (stderr)

fib.cpp:21:1: warning: ISO C++ forbids declaration of 'main' with no type [-Wreturn-type]
   21 | main()
      | ^~~~

• Subtask 1: 0 / 5
• Subtask 2: 0 / 20
• Subtask 3: 0 / 15
• Subtask 4: 0 / 10
• Subtask 5: 0 / 15
• Subtask 6: 0 / 35