QOJ.ac
QOJ
| ID | Problem | Submitter | Result | Time | Memory | Language | File size | Submit time | Judge time |
|---|---|---|---|---|---|---|---|---|---|
| #865037 | #9925. LR String | piggy123# | WA | 32ms | 7904kb | C++17 | 3.3kb | 2025-01-21 14:09:20 | 2025-01-21 14:09:21 |
Judging History
answer
#include <bits/stdc++.h>
#define ll long long
using namespace std;
ll nxtL[500005],nxtR[500005],nxtLR[500005],lstL,lstR,lstLR;
int main(){
cin.tie(0);cout.tie(0);
ios::sync_with_stdio(false);
ll t;
cin >> t;
while (t--){
string s;
cin >> s;
ll n=s.length();
s='*'+s;
lstL=lstR=lstLR=n+1;
for (ll i=n;i>=0;i--){
nxtL[i]=lstL;
nxtR[i]=lstR;
nxtLR[i]=lstLR;
if (i>0){
if (i<n&&s[i]=='L'&&s[i+1]=='R')lstLR=i+1;
if (s[i]=='L')lstL=i;
if (s[i]=='R')lstR=i;
}
}
ll q;
cin >> q;
for (ll i=1;i<=q;i++){
string t;
cin >> t;
ll ps=0;
for (ll j=0;j<t.size();j++){
if (j+1<t.size()){
if (t[j]=='L'&&t[j+1]=='R'){
ps=nxtLR[ps];
j++;
}else{
if (t[j]=='L')
ps=nxtL[ps];
else
ps=nxtR[ps];
}
}else{
if (t[j]=='L')
ps=nxtL[ps];
else
ps=nxtR[ps];
}
if (ps>n)break;
}
if (ps>n){
cout<<"NO\n";
}else{
cout<<"YES\n";
}
}
}
return 0;
}
/*
■■■■■ ■■ ■■■ ■■■ ■ ■ ■ ■■■■ ■■■■
■ ■■ ■■ ■ ■■ ■ ■■ ■ ■ ■■ ■ ■■ ■■ ■
■ ■ ■■ ■ ■ ■ ■ ■ ■ ■■■ ■■ ■■ ■ ■■
■ ■ ■■ ■ ■ ■ ■ ■ ■ ■■ ■ ■■ ■■
■ ■ ■■ ■ ■ ■■ ■■ ■■ ■
■ ■■ ■■ ■ ■■■ ■ ■■■ ■■ ■■ ■■ ■■■
■■■■■ ■■ ■ ■ ■ ■ ■■ ■■ ■■ ■■
■ ■■ ■ ■ ■ ■ ■■ ■■ ■■ ■
■ ■■ ■ ■ ■ ■ ■■ ■■ ■ ■ ■■
■ ■■ ■■ ■■ ■■ ■■ ■■ ■■ ■ ■■ ■■
■ ■■ ■■■■ ■■■■ ■■ ■■ ■■■■■■ ■■■■
*/
Details
Tip: Click on the bar to expand more detailed information
Test #1:
score: 100
Accepted
time: 0ms
memory: 7904kb
input:
2 RRLLRRLL 4 LLLLL LLR LRLR R RLLLLLL 3 LLLLL RL RRL
output:
NO YES NO YES YES YES NO
result:
ok 7 lines
Test #2:
score: -100
Wrong Answer
time: 32ms
memory: 7780kb
input:
100000 RRLLR 4 R R R R LRLLL 6 R L L L L R RLLRR 1 L LRLLL 3 R L L RLRRL 2 LRRRR RRRL LRLRR 2 L R RRLRL 4 RLRLR RLLL LR RLL RLRLL 8 R R R L L L R L RLLRR 7 R LL RL R L L L LLRLR 2 L R RRRRL 1 RLLLR RRLLL 2 L L RLLRL 1 RLLRL LRLLL 5 RLRLL RLLLR RRRRL LLRRR RLLRR LRLLL 3 RRLL R RL LLRRL 3 L R LLLRR RR...
output:
YES YES YES YES YES YES YES YES YES YES YES YES YES YES NO YES YES YES NO NO YES YES YES YES YES YES YES YES YES YES YES YES YES YES YES YES YES YES YES NO YES YES YES NO NO NO NO NO NO YES YES YES YES NO NO YES YES YES YES YES YES YES YES YES YES YES YES YES YES YES YES YES YES YES NO YES YES YES N...
result:
wrong answer 5th lines differ - expected: 'NO', found: 'YES'