Submission #1206155

#	Time	Username	Problem	Language	Result	Execution time	Memory
1206155		asli_bg	Fibonacci representations (CEOI18_fib)	C++20	5 / 100	27 ms	10824 KiB

fib

#include <bits/stdc++.h>
using namespace std;
 
#include <ext/pb_ds/assoc_container.hpp>
using namespace __gnu_pbds;

#define int long long
 
typedef pair<int,int> pii;
typedef vector<int> vi;
typedef vector<pii> vii;
typedef vector<bool> vb;
typedef long long ll;
typedef pair<ll,ll> pll;
typedef vector<pll> vll;
 
typedef tree<pii,null_type,less<pii>,rb_tree_tag,
tree_order_statistics_node_update> oset;
 
#define fi first
#define se second
#define pb push_back
#define pf push_front
 
#define mid (l+r)/2
#define all(x) x.begin(),x.end()
#define FOR(i,a) for(int i=0;i<(a);i++)
#define FORE(i,a,b) for(int i=(a);i<(b);i++)
 
#define cont(x) for(auto el:x) cout<<el<<' ';cout<<endl;
#define contp(x) for(auto el:x) cout<<el.fi<<'-'<<el.se<<' ';cout<<endl;
#define sp <<" "<<
 
#define DEBUG(x) cout<<(#x) sp x<<endl
#define carp(a,b) (((a%MOD)*(b%MOD))%MOD)
#define topla(a,b) (((a%MOD)+(b%MOD))%MOD)
 
const ll INF=1e18;
const int MAXN=92;//1e5+5;
const int MAXNN=2e5+5;
const int MOD=1e9+7;

vi fib;
void calc(){
    fib.pb(0);
    fib.pb(1);
    fib.pb(2);
    FORE(i,3,MAXN){
        fib.pb(fib[i-1]+fib[i-2]);
    }
}

int dp[MAXNN][MAXN];

int solve(int sum,int lim){
    if(sum<0 or lim<0) return 0;
    if(sum==0) return 1;
    if(lim==0) return 0;
    if(dp[sum][lim]!=0) return dp[sum][lim];

    FORE(i,1,lim+1){
        int deg=solve(sum-fib[i],i-1);
        dp[sum][lim]=topla(dp[sum][lim],deg);
    }

    return dp[sum][lim];
}

signed main(){
    ios_base::sync_with_stdio(false);
    cin.tie(0);
    cout.tie(0);

    calc();

    int n;
    cin>>n;
    vi a(n+1);
    FORE(i,1,n+1) cin>>a[i];

    int cur=0;
    FORE(i,1,n+1){
        cur+=fib[a[i]];
        auto it=upper_bound(all(fib),cur);
        it--;
        int ind=it-fib.begin();
        cout<<solve(cur,ind)<<endl;
    }
}

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