QOJ.ac
QOJ
ID | Problem | Submitter | Result | Time | Memory | Language | File size | Submit time | Judge time |
---|---|---|---|---|---|---|---|---|---|
#852740 | #9925. LR String | ruoye123456 | AC ✓ | 55ms | 7648kb | C++20 | 2.6kb | 2025-01-11 13:44:55 | 2025-01-11 13:44:57 |
Judging History
answer
#include<bits/stdc++.h>
using namespace std;
#define x first
#define y second
typedef pair<int,int> PII;
typedef long long ll;
typedef unsigned long long ull;
typedef unsigned int uint;
typedef vector<string> VS;
typedef vector<int> VI;
typedef vector<vector<int>> VVI;
vector<int> vx;
inline void divide() {sort(vx.begin(),vx.end());vx.erase(unique(vx.begin(),vx.end()),vx.end());}
inline int mp(int x) {return upper_bound(vx.begin(),vx.end(),x)-vx.begin();}
inline int log_2(int x) {return 31-__builtin_clz(x);}
inline int popcount(int x) {return __builtin_popcount(x);}
inline int lowbit(int x) {return x&-x;}
inline ll Lsqrt(ll x) { ll L = 1,R = 2e9;while(L + 1 < R){ll M = (L+R)/2;if(M*M <= x) L = M;else R = M;}return L;}
// 查找左侧边界的二分查找
int left_bound(const vector<int>& arr, int tar) {
int lo = 0, hi = arr.size();
while (lo < hi) {
int mid = lo + (hi - lo) / 2;
if (tar > arr[mid]) { // 使用[]替代get()
lo = mid + 1;
} else {
hi = mid;
}
}
return lo;
}
vector<vector<int>> Index(256);
void init(string &t)
{
for(int i=0;i<256;++i) Index[i].clear();
int n = t.length();
// 使用vector替代ArrayList
for (int i = 0; i < n; i++) {
char c = t[i]; // C++使用[]访问字符串字符
Index[c].push_back(i); // 使用push_back替代add
}
}
bool isSubsequence(string &s, string &t) {
int m = s.length(), n = t.length();
// 对 t 进行预处理
// 串 t 上的指针
int j = 0;
// 借助 index 查找 s[i]
for (int i = 0; i < m; i++) {
char c = s[i];
// 整个 t 压根儿没有字符 c
if (Index[c].empty()) return false; // 使用empty()检查vector是否为空
int pos = left_bound(Index[c], j);
// 二分搜索区间中没有找到字符 c
if (pos == Index[c].size()) return false;
// 向前移动指针 j
j = Index[c][pos] + 1; // 使用[]替代get
}
return true;
}
void solve()
{
string s;
cin>>s;
init(s);
int n = s.size();
bool start = (s[0] == 'L'), end = (s[n-1] == 'R');
int q;
cin>>q;
for(int i=0;i<q;++i)
{
string t;
cin>>t;
int m = t.size();
if(start) if(t[0] == 'R') {cout<<"NO\n";continue;}
if(end) if(t[m-1] == 'L') {cout<<"NO\n";continue;}
if(isSubsequence(t,s)) cout<<"YES\n";
else cout<<"NO\n";
}
}
int main()
{
ios::sync_with_stdio(false);
cin.tie(0);
int T = 1;
cin>>T;
while(T--)
{
solve();
}
}
这程序好像有点Bug,我给组数据试试?
Details
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Test #1:
score: 100
Accepted
time: 0ms
memory: 3552kb
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: 0
Accepted
time: 42ms
memory: 3852kb
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 NO 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 NO...
result:
ok 356450 lines
Test #3:
score: 0
Accepted
time: 49ms
memory: 6612kb
input:
2 RRLRLLLRLRLRLRLLLLRRLLLRLRRLLLLLLRRRRRLRLRLRLLLLRRRLLRLRRLLRRRRRLLRLLRLLLLRLLLLRLLRRRRLRLLRRLRRRLLRRRLLLRLLRRLRLRRRRLRRLRRRLRLRLLLRLRRLRLRRRRRRLRRRRRLLLRLLLLRLRRRLRLRLLLRLRLLLLRLRRLRRLLRLRLRRLLLRRRLLLLLLLRLRRLLLLLRLRRLRLRLRRRLLRLLRLLRRLRRLLRLRLRLRLRRLRRRLLLRLLRLRLRRLRRRLLRRRRRRRRLLRLLRRLLRRLLLLRLR...
output:
YES YES YES YES YES YES YES YES YES YES YES YES YES YES YES YES YES YES YES YES YES YES YES YES YES YES YES YES YES YES YES YES YES YES YES YES YES YES YES YES YES YES YES YES YES YES YES YES YES YES YES YES YES YES YES YES YES YES YES YES YES YES YES YES YES YES YES YES YES YES YES YES YES YES YES ...
result:
ok 820231 lines
Test #4:
score: 0
Accepted
time: 40ms
memory: 6708kb
input:
2 LLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLL...
output:
NO YES NO NO NO NO YES NO NO YES NO YES NO NO YES NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO YES NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO YES NO NO NO...
result:
ok 531269 lines
Test #5:
score: 0
Accepted
time: 44ms
memory: 3584kb
input:
100000 LRLLLLRLRR 4 LLRRRRRR LRLLL LL RLR LLLLLRRLLR 1 RLLR RRLRLRRRRR 1 LRLLLLRRLR LRRLLRLRLL 3 RLRL LLLRR LRRLRRRL RRRRLRLRRR 2 RRL L RRLLRRRLRL 4 LLLLRRRLRR LRLLLRLRL RRLRRLRLLR RRRRRLLRLR LLLLLRLLLR 1 LLRRLRLR RLLLRLLRLL 1 RRLLRLRLLL RLLRRLLLLL 6 L L L R R L LRLRLRRRRL 1 RLLRRRRRRL RRLLLLLLRL 2 ...
output:
NO NO NO NO NO NO NO YES NO NO NO NO NO NO NO NO NO YES YES YES YES YES YES NO NO NO NO NO NO YES NO YES NO YES YES YES NO NO NO NO YES NO NO NO NO NO NO NO YES YES YES YES NO NO NO NO NO NO NO NO NO NO NO NO NO NO YES NO NO NO YES NO NO NO NO YES NO YES NO NO YES YES YES YES NO YES YES YES YES NO Y...
result:
ok 249969 lines
Test #6:
score: 0
Accepted
time: 55ms
memory: 3624kb
input:
100000 RRLLRRLLLR 1 L RLLLLRRRRR 2 L L RLRRLLLRRL 3 L L R LRLRLLRLLL 3 RRLLLLRLLL L RLRRLLLRRR LLLRRLRRRL 4 L R L L RRLRLLLLLL 1 LLLL RRLLRRLRLL 27 R LR L R R LR RLL L LR L L LL L LL R R R LR R RL LRLRL L L LL R R RRL RLLRLRRRLL 4 L LR LRLRRLRR R LLLRRRRRRR 11 R L L R R R L R L L R RLRLLLRLRL 8 LL L...
output:
NO NO NO YES YES YES NO YES NO YES NO YES YES YES YES YES YES YES YES YES YES YES YES YES YES YES YES YES YES YES YES YES YES YES YES YES YES YES YES YES YES YES YES NO YES NO NO NO NO NO NO NO NO NO NO NO YES YES YES YES YES YES YES YES NO YES YES NO YES NO YES YES YES YES YES YES YES YES YES YES Y...
result:
ok 527043 lines
Test #7:
score: 0
Accepted
time: 31ms
memory: 3892kb
input:
10000 RLLLRRLRLRLLRRLLLRRRRLLLLRRLLLRLRLLLLRRLRLRRLLLRLLLLLLLRLRRLRLLRRLLRRLLRRRLRRLRLRLLLLRRLLRLRRRLLRRLR 37 R L R R R R L RL R R RLL R RRLR L LR R LR L LL R LLLL LRRR R LLL L LR LR RLR LRRL R R RRL L L L L L RRRRRRRLRLLLLLLLRRRLLLLRRLLRLLRLLRRRRLRLRRRRLRRLLLLLLRLLLLRRRRRRLLRRRLLRRRLLLRRRLRLLRLRRLL...
output:
YES NO YES YES YES YES NO NO YES YES NO YES YES NO YES YES YES NO NO YES NO YES YES NO NO YES YES YES NO YES YES NO NO NO NO NO NO NO YES YES NO YES NO NO YES YES NO NO NO YES NO NO YES YES NO YES YES NO NO YES YES YES YES NO NO NO NO YES YES NO YES NO YES YES YES YES YES YES YES YES YES YES YES YES...
result:
ok 507876 lines
Test #8:
score: 0
Accepted
time: 35ms
memory: 3896kb
input:
1000 RLRLLLRLLLRRLRLLLRRLRLLLLLLLRLLLLRLRLRLRRLLLLLRRLLRRLRLLLRLRRLRRRLRRRLRLRLLRRRLRLLLRRRLRLRRRRRRLRRLRLLLLLLRRRLRLLRRRRRRLRLRLRLRRLRRLRRLRRRRRRRLLRRLRLLLLLRRRLLRLRRLLRLLLRLLRRLLRRLRLLLRRRLLLLRLLRRRRLRLRLRLRLRLRLRRLRLRLLLRRRLRLLRLLRRLRLLLRRRRRLRRLLLLRRLRRRLRLRLRRRLLRRLRRLLRRLRLRRLRLRRRLLRLRRLLRLLR...
output:
YES YES YES NO NO NO YES YES YES NO YES NO YES NO YES NO YES NO NO NO YES NO YES NO YES YES YES YES NO NO NO NO NO NO YES YES NO NO YES NO YES NO YES YES YES YES NO YES NO YES YES YES NO YES YES YES YES YES YES YES NO YES YES NO NO NO NO NO NO NO YES NO YES NO YES YES YES NO YES NO NO YES YES NO NO ...
result:
ok 515798 lines
Test #9:
score: 0
Accepted
time: 46ms
memory: 3944kb
input:
10 LRLLRLRRLLRRRLLRRRRLRLLLLRLRLLLRLRRRLLRLRLLLLRRLLLLRRRRRRRRLLLRLRLLLLLRLLRLRRRLRRRRRLRLRRLRLRRRRRLLLLRLRRRRLRLRLRRLRLLRLLRRRRLLRLRRLLRLLRLRLLLRRRRLLLRLLRRRRRLLLRLLLRLLLLLLRLRRLRLLLRRRLLLRLRLLRRLRLRRLRRLRLLLLLLLRRRLLRLLRRRRRRLLRRRRLRLLRLLRRLLRLRLLRRRLRRRRLRRRLRLRLRRLRLLLRLRRRRLLLRRLLRLRRRLRLLRRRRR...
output:
NO YES YES NO NO YES YES NO YES YES YES YES NO NO YES NO YES NO NO NO YES NO YES YES YES NO NO YES NO NO YES YES NO YES YES NO YES YES NO YES YES NO NO NO NO NO NO YES YES YES YES YES YES YES YES NO NO YES NO YES NO NO NO NO YES NO YES NO NO YES YES NO NO YES YES NO NO NO NO NO NO YES YES YES YES NO...
result:
ok 779728 lines
Test #10:
score: 0
Accepted
time: 34ms
memory: 4260kb
input:
20 LRRRLLRLRLLLRLRLLRLLRRLLLLRRRRLLRLLLLLRLRLRLRLRLRRRLRRRLRLRLLRLRLRLRRLLRRRLLRRRRLRLLRLLRLRLRRLLRRLLRLRRLLRLLRRLLLRRLLLLLRLRRLLRRRLRRLLLLLLRLLRRRRRLLLLLLRLRLRRLLRRRRRRLRRLLLRRRRLLLLRLRRLRLLLRRLRLLRLRLLRRRRRRLRLLLLLRLLLLLRLRRLLLLLLLLRLLRRLRLLLRRRRLLLRLRLRRRLRRRLLRLRLLLRLRRLRLLLRRRLLLRLRLLRRRRLRLRLL...
output:
NO YES YES NO YES NO NO NO YES NO YES YES YES NO YES YES NO YES NO YES NO YES NO NO NO NO NO NO YES YES NO YES YES NO NO NO NO NO NO YES YES NO NO YES NO NO NO YES NO YES NO NO NO NO YES NO YES NO YES YES YES YES YES NO NO NO NO YES NO NO YES YES NO NO YES YES YES NO YES NO NO YES YES NO YES NO YES ...
result:
ok 447294 lines
Test #11:
score: 0
Accepted
time: 35ms
memory: 4988kb
input:
4 RRRRLLRRRRLLRLLLLRRLLLRLRLLLLRRRLLRRRRRRRLLLLRLRLRRLRLLLRLLLLRLRRLRRLRLRRRRLRLLLRLLLLLLLLLLLRRRLLLRRLRLRLRLRRLRLRRLLRRLRRRLLRLLRLRLRRLLRLLLLLLLRRRLLLLLRRLRRLLLRRRLRLLLLLLRLRRRRRLRLLRRLRRRRRLLRRRRLLLRRLLLRRRLLLLRLRRLRLLLLLRLLRLRLRRRLRRRRLLLLLLRRRRLRLRRRLRLLRRRLRRRRRRRRRRRLLRLRRRLRLLRLLRRRRRLRLLRRRL...
output:
YES YES NO YES NO NO NO NO NO YES YES NO NO YES YES YES YES NO YES NO YES YES NO YES YES NO NO NO YES YES NO YES NO YES YES YES YES YES YES NO NO YES NO YES NO NO YES YES YES YES YES NO YES NO NO YES YES YES NO NO YES NO NO YES NO YES NO NO YES YES YES YES NO NO YES YES NO YES NO YES NO NO NO NO NO ...
result:
ok 508901 lines
Test #12:
score: 0
Accepted
time: 44ms
memory: 6084kb
input:
3 RLLRRRLRRLLLRLLRRRLLRLLLRRLLRRRLRLLRLLRLRRRRRLRLRLLLRLRLRRLRLLLRLLRRRRLLRLLRLRRRRLLLRLLLLRLLRRRLRRRRRRRLRLRRRLRRRLLLLRRLRLRLRLLRRRLLLLRRLRLRLLLRLRRRLLLLLLLLLRLRLLLRRLLRLLLRLRRLRLLRRLLLLLRRRRRRRLLRRRLRRRLLRRRRRRLRRRLLLRRRLLRLRLRRLLRLRLRRLRRLLRRRLRLLLLLLRLLLRRLLLRLRRRRLLRRRLLRRLRRRRLLLLRLLLLLRLRLLRR...
output:
NO NO NO YES YES NO NO YES NO YES YES YES NO YES YES YES NO YES YES YES NO YES NO NO NO NO YES NO YES NO NO YES NO NO YES YES NO YES YES NO NO NO NO NO YES NO YES YES YES YES YES NO YES YES YES YES YES YES YES NO YES YES YES NO NO NO NO NO YES NO NO NO YES NO NO NO YES YES YES YES NO NO YES NO YES N...
result:
ok 941609 lines
Test #13:
score: 0
Accepted
time: 52ms
memory: 7380kb
input:
2 RRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRR...
output:
YES YES YES YES YES YES YES YES YES YES YES YES YES YES YES YES YES YES YES YES YES YES YES YES YES YES YES YES YES YES YES YES YES YES YES YES YES YES YES YES YES YES YES YES YES YES YES YES YES YES YES YES YES YES YES YES YES YES YES YES YES YES YES YES YES YES YES YES YES YES YES YES YES YES YES ...
result:
ok 858650 lines
Test #14:
score: 0
Accepted
time: 3ms
memory: 7060kb
input:
2 RRLLLLRRRLLLLLLRRRRLRRRRLLLLRRLRLLLRLLLLLRLLRLRLRRLLLRLRLLRRLRRRRLLLLRRRRLRLLRLRRRRRLRLRRLLLLRRRRLRRRRRRLRRLRLRLRLRRRRLLLRLLRLRLRRRLRLRRLRRRLLLRRLLLRRLLLRLLLRRRRLLRRRLLLRRLLLLRRLRRLLRLRLLRLRLLLRLLRRLRLRLLRRLRRLLRRLLLRLRRLLLRLRLRRRRRLRLRRLLRRLLLRLRRLRLRLRLRLRLRRLLRRLLLRLRRRRLRLLLRLRRRLLLRRLLLLRLRRR...
output:
NO NO
result:
ok 2 lines
Test #15:
score: 0
Accepted
time: 55ms
memory: 7108kb
input:
2 RRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRR...
output:
YES YES YES YES NO NO YES YES YES NO
result:
ok 10 lines
Test #16:
score: 0
Accepted
time: 32ms
memory: 7092kb
input:
1 LLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLL...
output:
NO YES YES YES NO
result:
ok 5 lines
Test #17:
score: 0
Accepted
time: 53ms
memory: 7648kb
input:
2 LLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLL...
output:
YES NO NO NO YES YES YES YES YES YES
result:
ok 10 lines
Test #18:
score: 0
Accepted
time: 43ms
memory: 6704kb
input:
1 RRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRR...
output:
YES YES YES NO YES
result:
ok 5 lines
Test #19:
score: 0
Accepted
time: 26ms
memory: 7296kb
input:
2 LLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLL...
output:
NO YES
result:
ok 2 lines
Test #20:
score: 0
Accepted
time: 27ms
memory: 6780kb
input:
1 LLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLL...
output:
YES
result:
ok single line: 'YES'
Extra Test:
score: 0
Extra Test Passed