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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 |
|---|---|---|---|---|---|---|---|---|---|
| #336122 | #8287. Caught in the Middle | ucup-team052# | WA | 0ms | 3896kb | C++23 | 541b | 2024-02-24 13:23:22 | 2024-02-24 13:23:22 |
Judging History
answer
#include <bits/stdc++.h>
#define rep(i, a, b) for (int i = a; i <= b; i++)
#define per(i, b, a) for (int i = b; i >= a; i--)
using namespace std;
#define N 1000005
char s[N];
int n;
void work()
{
scanf("%d%s",&n,s+1);
if(s[1]=='L'||s[n]=='R') printf("Alice\n");
else
{
int l=0,r=0;
while(s[l+1]=='R') l++;
while(s[n-r]=='L') r++;
if(l==r) printf("Bob\n");
else printf("Alice\n");
}
}
signed main()
{
#ifdef xay5421
freopen("a.in","r",stdin);
#endif
int T; cin>>T;
while(T--) work();
return 0;
}
详细
Test #1:
score: 100
Accepted
time: 0ms
memory: 3896kb
input:
20 10 RLRRRRLLRR 10 LRLLLLRRLR 6 RLRLRL 10 LLRLRRRRLR 6 LRRLLL 3 RLR 5 LLRRR 6 RRRRRL 9 LRRRLRRLR 1 R 10 RRRLLRRLLL 6 LRLLLR 9 LLRLRLRLR 7 RRRRLRR 2 LL 10 RRRLLRRLRR 2 RL 7 RRLRRLR 3 LLR 10 LLRLRRRLLR
output:
Alice Alice Bob Alice Alice Alice Alice Alice Alice Alice Bob Alice Alice Alice Alice Alice Bob Alice Alice Alice
result:
ok 20 lines
Test #2:
score: -100
Wrong Answer
time: 0ms
memory: 3856kb
input:
20 7 LRLLRRR 8 LRLRLRRR 3 RLL 10 RLRLRLRLRL 10 RLRLRLRLRL 6 RLLLRL 10 RLRLRLRLLL 5 RLRRR 2 LL 10 RRRRLRLRLL 7 LLRRLLR 3 LRR 10 RRRRRLLLLL 10 RLRRRLRLRR 2 LR 6 RRLLLL 4 RRLR 10 LRLRLLRLRR 4 LRLL 10 RRLLRRRLLL
output:
Alice Alice Alice Bob Bob Bob Alice Alice Alice Alice Alice Alice Bob Alice Alice Alice Alice Alice Alice Alice
result:
wrong answer 6th lines differ - expected: 'Alice', found: 'Bob'