Submission #424906

#	Time	Username	Problem	Language	Result	Execution time	Memory
424906		A_D	Fibonacci representations (CEOI18_fib)	C++14	5 / 100	2206 ms	175928 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 N=40;
int a[N];
int f[N];
map<ii,int> mp;
int bc(int sum,int i)
{
    if(sum<0)return 0;
//    cout<<sum<<" "<<i<<endl;
    if(mp.count({sum,i})){
        return mp[{sum,i}];
    }
    if(i==0){
        return sum==0;
    }
    int ret=0;
    ret+=bc(sum-f[i],i-1);
    ret+=bc(sum,i-1);
    return mp[{sum,i}]=ret;
}
void solve()
{
    int n;
    cin>>n;
    f[1]=1;
    f[2]=2;
    for(int i=3;i<=24;i++){
        f[i]=f[i-1]+f[i-2];
    }
    int sum=0;
    while(n--){
        int a;
        cin>>a;
        sum+=f[a];
//        mp.clear();
        int ans=bc(sum,24);
        cout<<ans<<endl;
    }
}
main()
{
    int t=1;
    //cin>>t;
    while(t--)solve();
}

Compilation message (stderr)

fib.cpp:46:1: warning: ISO C++ forbids declaration of 'main' with no type [-Wreturn-type]
   46 | main()
      | ^~~~

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