QOJ.ac
QOJ
| ID | 题目 | 提交者 | 结果 | 用时 | 内存 | 语言 | 文件大小 | 提交时间 | 测评时间 |
|---|---|---|---|---|---|---|---|---|---|
| #834249 | #9925. LR String | yyf_0404# | WA | 29ms | 5664kb | C++17 | 1.4kb | 2024-12-27 14:19:38 | 2024-12-27 14:19:38 |
Judging History
answer
// k.cpp
#include <bits/stdc++.h>
using namespace std;
char s[500005], t[500005];
int n, nxt[500005][3];
void solve() {
cin >> s;
n = strlen(s);
int la[3] = {n, n, n};
for (int i = n - 1; i >= 0; i--) {
if (s[i] == 'L') {
la[0] = i;
if (s[i + 1] == 'R') {
la[2] = i;
}
}
else {
la[1] = i;
}
memcpy(nxt[i], la, sizeof(la));
}
int q;
cin >> q;
while (q--) {
cin >> t;
int m = strlen(t), len = n, cur = 0, st = 0;
if (t[0] == 'R') {
if (s[0] == 'R') {
cur += 1;
st += 1;
}
else {
printf("NO\n");
continue;
}
}
if (t[m - 1] == 'L') {
if (s[len - 1] == 'L') {
m -= 1;
len -= 1;
}
else {
printf("NO\n");
continue;
}
}
for ( ; st < m; st++) {
if (cur > len) {
cur = len + 1;
break;
}
if (t[st] == 'L') {
if (st + 1 < m && t[st + 1] == 'R') {
cur = nxt[cur][2] + 2;
st += 1;
}
else {
cur = nxt[cur][0] + 1;
}
}
else {
cur = nxt[cur][1] + 1;
}
}
// cout << cur << endl;
printf(cur > len ? "NO\n" : "YES\n");
}
}
int main() {
ios::sync_with_stdio(0);
cin.tie(0);
int T;
cin >> T;
while (T--) solve();
return 0;
}
详细
Test #1:
score: 100
Accepted
time: 0ms
memory: 5664kb
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: 29ms
memory: 3716kb
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 NO YES YES YES YES NO NO NO YES YES NO YES NO NO NO NO YES YES YES YES YES YES YES YES YES YES YES NO NO YES NO NO NO NO NO NO YES YES YES NO NO NO NO NO NO NO NO YES NO NO YES YES YES NO NO NO NO NO NO NO NO NO YES YES YES YES YES YES YES NO NO NO NO YES NO NO YES YES YES NO NO NO N...
result:
wrong answer 55th lines differ - expected: 'NO', found: 'YES'