Submission #950311

#	Time	Username	Problem	Language	Result	Execution time	Memory
950311		berr	Fibonacci representations (CEOI18_fib)	C++17	0 / 100	1 ms	348 KiB

fib

#include <bits/stdc++.h>
using namespace std;
#define int long long
const int mod =1e9+7;

int mul(int x, int y){
    return (x*y)%mod;
}
int poww(int x, int y){
    if(y==0) return 1;

    int tmp =poww(x, y/2);
    tmp=mul(tmp, tmp);

    if(y%2) return mul(tmp, x);
    return tmp;
}

signed main(){
    ios_base::sync_with_stdio(false);
    cin.tie(0);
    int n; cin >> n;
    vector<int> a(n);
    int cnt=1;
    for(auto &i: a) i=cnt*cnt, cnt++;
    int ans=1;
    set<int> st;

    for(int i=0; i<n; i++){
        int ans=1;
        st.insert(a[i]);
        int l=0;
        for(auto i: st){
            ans=mul(ans, (i-l)/2+1);
            l=i;
        }
        cout<<ans<<"\n";
    }


}   

Compilation message (stderr)

fib.cpp: In function 'int main()':
fib.cpp:27:9: warning: unused variable 'ans' [-Wunused-variable]
   27 |     int ans=1;
      |         ^~~

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