QOJ.ac
QOJ
| ID | Problem | Submitter | Result | Time | Memory | Language | File size | Submit time | Judge time |
|---|---|---|---|---|---|---|---|---|---|
| #807870 | #9871. Just another Sorting Problem | HalloWorld | WA | 0ms | 3664kb | C++20 | 1.2kb | 2024-12-10 13:42:48 | 2024-12-10 13:42:48 |
Judging History
answer
#include <bits/stdc++.h>
using namespace std;
#define ll long long
#define ull unsigned long long
#define SZ(x) ((int)(x).size())
#define debug(a) cout<<#a<<":"<<a<<endl
#define rep(i,a,b) for(int i=a;i<=b;i++)
#define per(i,b,a) for(int i=b;i>=a;i--)
constexpr int N=100010;
constexpr int INF=2e9;
constexpr ll LLF=2e18;
constexpr ll mod=998244353;
constexpr int dir[4][2]={{-1,0},{1,0},{0,-1},{0,1}};
ll powmod(ll a,ll b,ll mod=mod) {ll res=1;a%=mod;for(;b;b>>=1){if(b&1)res=res*a%mod;a=a*a%mod;}return res;}
ll inv(ll a){return powmod(a,mod-2);}
int n,a[N];
string s;
void solve() {
cin>>n>>s;
int cnt=0;
rep(i,1,n){
cin>>a[i];
if(a[i]!=i){
cnt++;
}
}
int mx=0;
rep(i,2,n){
int tcnt=cnt;
if(a[i]==i) tcnt--;
if(a[i-1]==i-1) tcnt--;
if(a[i]==i-1) tcnt++;
if(a[i-1]==i) tcnt++;
mx=max(mx,tcnt);
}
if(n==2){
cout<<"Alice\n";
return;
}
if(s=="Alice"){
if(cnt<=2){
cout<<"Alice\n";
}else{
cout<<"Bob\n";
}
}else{
if(mx<=2){
cout<<"Alice\n";
}else{
cout<<"Bob\n";
}
}
}
int main() {
ios::sync_with_stdio(false);cin.tie(nullptr);
//cout<<fixed<<setprecision(10);
int testcase;cin>>testcase;rep(_,1,testcase){
solve();
}
return 0;
}
Details
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Test #1:
score: 100
Accepted
time: 0ms
memory: 3564kb
input:
3 2 Alice 2 1 3 Bob 1 3 2 10 Bob 1 2 3 4 5 6 7 8 10 9
output:
Alice Bob Bob
result:
ok 3 lines
Test #2:
score: 0
Accepted
time: 0ms
memory: 3612kb
input:
2 2 Alice 2 1 2 Bob 2 1
output:
Alice Alice
result:
ok 2 lines
Test #3:
score: -100
Wrong Answer
time: 0ms
memory: 3664kb
input:
10 3 Bob 2 3 1 3 Alice 3 1 2 3 Bob 3 1 2 3 Alice 1 3 2 3 Alice 3 2 1 3 Bob 2 1 3 3 Bob 1 3 2 3 Alice 2 1 3 3 Alice 2 3 1 3 Bob 3 2 1
output:
Bob Bob Bob Alice Alice Bob Bob Alice Bob Alice
result:
wrong answer 1st lines differ - expected: 'Alice', found: 'Bob'