//~~~~~~~~~~~~~MJ®™~~~~~~~~~~~~~
#include <bits/stdc++.h>
#pragma GCC optimize("Ofast")
#pragma GCC optimize("unroll-loops")
#pragma GCC target("sse,sse2,sse3,ssse3,sse4,popcnt,abm,mmx,avx")
#define rep1(n) for(ll i=0; i<(ll)(n); ++i)
#define rep2(i,n) for(ll i=0; i<(ll)(n); ++i)
#define rep3(i,a,b) for(ll i=(ll)(a); i<(ll)(b); ++i)
#define rep4(i,a,b,c) for(ll i=(ll)(a); i<(ll)(b); i+=(c))
#define cut4(a,b,c,d,e,...) e
#define rep(...) cut4(__VA_ARGS__,rep4,rep3,rep2,rep1)(__VA_ARGS__)
#define per1(n) for(ll i=((ll)n)-1; i>=0; --i)
#define per2(i,n) for(ll i=((ll)n)-1; i>=0; --i)
#define per3(i,a,b) for(ll i=((ll)a)-1; i>=(ll)(b); --i)
#define per4(i,a,b,c) for(ll i=((ll)a)-1; i>=(ll)(b); i-=(c))
#define per(...) cut4(__VA_ARGS__,per4,per3,per2,per1)(__VA_ARGS__)
#define ll long long
#define ln cout<<endl
#define int long long
#define Code ios_base::sync_with_stdio(0);
#define by cin.tie(NULL);
#define Hayan cout.tie(NULL);
#define append push_back
#define all(x) (x).begin(),(x).end()
#define allr(x) (x).rbegin(),(x).rend()
#define vi vector<int>
#define yes cout<<"YES"<<endl;
#define no cout<<"NO"<<endl;
#define vb vector<bool>
#define vv vector<vi>
#define vp vector<pi>
#define vs vector<string>
#define ul map<int,vi>
// #define ub map<int,bool>
#define ui map<int,int>
#define sum(a) accumulate(all(a),0)
#define add insert
#define endl '\n'
#define pi pair<int,int>
#define ff first
#define ss second
using namespace std;
const int mod=1e9+7;
int to_int(string &a)
{
int ans=0;
int mask=1;
per(a.size())
{
ans+=(a[i]-'0')*mask;
// cout<<ans<<endl;
mask<<=1;
}
return ans;
}
void solve()
{
int n,k,e,m,ans=0;
cin>>n>>k;
string s,b1,b2,s1,s2;
cin>>s>>b1>>b2;
int lb=to_int(b1);
int ub=to_int(b2);
s1+='1';
s2+='1';
// cout<<lb<<" "<<ub;ln;
int ans1=1,ans2=1;
vi a(n);
rep(n-1)
{
ans1<<=1;
if (s[i]=='R')
ans1++;
ans1%=mod;
}
per(n-1)
{
ans2<<=1;
if (s[i]=='R')
ans2++;
ans2%=mod;
}
// cout<<ans1<<" "<<ans2<<endl;
if (ans1>=lb and ans1<=ub)
{
ans+=ans1;
ans%=mod;
}
if (ans2>=lb and ans2<=ub)
{
ans+=ans2;
ans%=mod;
}
//vi a;
// //rep(n){cin>>e;a.append(e);}
cout<<ans%mod;
// cout<<a.size();
// for (auto i: a){cout<<i<<" ";}
}
signed main(){
Code by Hayan
int ans=1;
//cout<<setprecision(1000);
// cin>>ans;
while(ans--){
// cout << "Case #" << ans << ": \n";
solve();ln;}}
Compilation message
ljetopica.cpp: In function 'void solve()':
ljetopica.cpp:73:7: warning: this 'if' clause does not guard... [-Wmisleading-indentation]
73 | if (s[i]=='R')
| ^~
ljetopica.cpp:75:9: note: ...this statement, but the latter is misleadingly indented as if it were guarded by the 'if'
75 | ans1%=mod;
| ^~~~
ljetopica.cpp:58:13: warning: unused variable 'e' [-Wunused-variable]
58 | int n,k,e,m,ans=0;
| ^
ljetopica.cpp:58:15: warning: unused variable 'm' [-Wunused-variable]
58 | int n,k,e,m,ans=0;
| ^
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Incorrect |
0 ms |
348 KB |
Output isn't correct |
| 2 |
Halted |
0 ms |
0 KB |
- |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Incorrect |
0 ms |
348 KB |
Output isn't correct |
| 2 |
Halted |
0 ms |
0 KB |
- |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Incorrect |
0 ms |
348 KB |
Output isn't correct |
| 2 |
Halted |
0 ms |
0 KB |
- |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Incorrect |
0 ms |
348 KB |
Output isn't correct |
| 2 |
Halted |
0 ms |
0 KB |
- |
