Submission #883600

#	Time	Username	Problem	Language	Result	Execution time	Memory
883600		tsumondai	Fibonacci representations (CEOI18_fib)	C++14	50 / 100	2 ms	452 KiB

fib

#include<bits/stdc++.h>
using namespace std;
long long mod=1e9+7;
 
int main(){
	ios::sync_with_stdio(0);
	cin.tie(0);
	cout.tie(0);
	int n;
	cin>>n;
	if(n<=100){
		vector<long long>now;
		now.push_back(0);
		vector<int>all(n);
		for(int i=0;i<n;i++){
			cin>>all[i];
		}
		for(int asd=0;asd<n;asd++){
			now.push_back(all[asd]);
			while(true){
				sort(now.begin(),now.end());
				int f=-1;
				for(int i=1;i<(int)now.size()-1;i++){
					if(now[i]==now[i+1]-1){
						f=i;
					}
				}
				if(f!=-1){
					vector<long long>fn;
					for(int i=0;i<(int)now.size();i++){
						if(i==f||i==f+1){
							continue;
						}
						fn.push_back(now[i]);
					}
					fn.push_back(now[f]+2);
					now=fn;
				}
				else{
					sort(now.begin(),now.end());
					int f=-1;
					for(int i=1;i<(int)now.size()-1;i++){
						if(now[i]==now[i+1]){
							f=i;
						}
					}
					if(f!=-1){
						vector<long long>fn;
						for(int i=0;i<(int)now.size();i++){
							if(i==f||i==f+1){
								continue;
							}
							fn.push_back(now[i]);
						}
						if(now[f]==1){
							fn.push_back(2);
						}
						else if(now[f]==2){
							fn.push_back(3);
							fn.push_back(1);
						}
						else{
							fn.push_back(now[f]+1);
							fn.push_back(now[f]-2);
						}
						now=fn;
					}
					else{
						break;
					}
				}
			}
			while(true){
				sort(now.begin(),now.end());
				int f=-1;
				for(int i=1;i<(int)now.size()-1;i++){
					if(now[i]==now[i+1]){
						f=i;
					}
				}
				if(f!=-1){
					vector<long long>fn;
					for(int i=0;i<(int)now.size();i++){
						if(i==f||i==f+1){
							continue;
						}
						fn.push_back(now[i]);
					}
					if(now[f]==1){
						fn.push_back(2);
					}
					else if(now[f]==2){
						fn.push_back(3);
						fn.push_back(1);
					}
					else{
						fn.push_back(now[f]+1);
						fn.push_back(now[f]-2);
					}
					now=fn;
				}
				else{
					break;
				}
			}
			vector<pair<long long,long long>>dp(asd+3);
			long long len=0;
			dp[0]=make_pair(1,0);
			for(int i=1;i<(int)now.size();i++){
				len=now[i]-now[i-1]-1;
				if((now[i-1]%2)!=(now[i]%2)){
					dp[i]=make_pair(dp[i-1].first+dp[i-1].second,(dp[i-1].first+dp[i-1].second)*(len/2));
				}
				else{
					dp[i]=make_pair(dp[i-1].first+dp[i-1].second,(dp[i-1].first+dp[i-1].second)*(len/2)+dp[i-1].second);
				}
				dp[i].first%=mod;
				dp[i].second%=mod;
			}
			long long res=dp[(int)now.size()-1].first+dp[(int)now.size()-1].second;
			res%=mod;
			cout<<res<<"\n";
		}	
	}
	else{
      return 0;
    }
}

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