Submission #167322

#	Time	Username	Problem	Language	Result	Execution time	Memory
167322		AKaan37	Ljetopica (COI19_ljetopica)	C++17	8 / 100	5 ms	1532 KiB

ljetopica

//Sani buyuk Osman Pasa Plevneden cikmam diyor.
//FatihSultanMehmedHan
//Abdulhamid Han
//Bismillahirrahmanirrahim
//█▀█─█──█──█▀█─█─█
//█▄█─█──█──█▄█─█▄█
//█─█─█▄─█▄─█─█─█─█

#pragma GCC optimize ("O3")
#pragma GCC target ("sse4")

#include <bits/stdc++.h>

using namespace std;

typedef long long lo;
typedef pair< lo,lo > PII;

#define fi first
#define se second
#define int long long
#define mp make_pair
#define pb push_back
#define fio() ios_base::sync_with_stdio(false);cin.tie(NULL);cout.tie(NULL)
#define FOR for(int i=1;i<=n;i++)
#define mid ((start+end)/2)
#define ort ((bas+son)/2)

const lo MAX = -1000000000000000000;
const lo MIN = 1000000000000000000;
const lo inf = 1000000000;
const lo KOK = 100000;
const lo LOG = 30;
const lo li = 500005;
const lo mod = 1000000007;

int n,m,b[li],a[li],k,flag,t;
int cev;
string s,s1,s2;
vector<int> v;

inline int add(int x,int y){
	if(x+y>=mod)return x+y-mod;
	return x+y;
}

inline int mul(int x,int y){
	return (x%mod)*(y%mod)%mod;
}

inline void dfs(int sira,int der,string ss){
	if(der==n){
		//~ cout<<ss<<endl;
		if(ss>=s1 && ss<=s2){
			int carp=1;
			for(int i=(int)ss.size()-1;i>=0;i--){
				cev=add(cev,mul(carp,(ss[i]-'0')));
				carp=mul(carp,2);
			}
		}
		return ;
	}
	if(s[sira]=='L')dfs(sira+1,der+1,ss+'0');
	else dfs(sira+1,der+1,ss+'1');
}

main(void){
	fio();
	cin>>n>>k;
	cin>>s;
	cin>>s1>>s2;
	string st{};
	st+='1';
	dfs(0,1,st);
	for(int i=0;i<(int)s.size();i++){
		if(s[i]=='L')s[i]='R';
		else s[i]='L';
	}
	dfs(0,1,st);
	cout<<cev<<endl;
	return 0;
}

Compilation message (stderr)

ljetopica.cpp:67:10: warning: ISO C++ forbids declaration of 'main' with no type [-Wreturn-type]
 main(void){
          ^

• Subtask 1: 8 / 8
• Subtask 2: 0 / 14
• Subtask 3: 0 / 17
• Subtask 4: 0 / 61