#include #pragma GCC optimize("Ofast") #pragma GCC optimize("unroll-loops") using namespace std; using std::cout; using std::cin; using std::endl; using ll=long long; using ld=long double; const ll ILL=2167167167167167167; const int INF=2100000000; const int mod=998244353; #define rep(i,a,b) for (int i=(int)(a);i<(int)(b);i++) #define all(p) p.begin(),p.end() template using _pq = priority_queue, greater>; template ll LB(vector &v,T a){return lower_bound(v.begin(),v.end(),a)-v.begin();} template ll UB(vector &v,T a){return upper_bound(v.begin(),v.end(),a)-v.begin();} template bool chmin(T &a,const T &b){if(a>b){a=b;return 1;}else return 0;} template bool chmax(T &a,const T &b){if(a void So(vector &v) {sort(v.begin(),v.end());} template void Sore(vector &v) {sort(v.begin(),v.end(),[](T x,T y){return x>y;});} void yneos(bool a){if(a) cout<<"Yes\n"; else cout<<"No\n";} template void vec_out(vector &p){for(int i=0;i<(int)(p.size());i++){if(i) cout<<" ";cout< T vec_min(vector &a){assert(!a.empty());T ans=a[0];for(auto &x:a) chmin(ans,x);return ans;} template T vec_max(vector &a){assert(!a.empty());T ans=a[0];for(auto &x:a) chmax(ans,x);return ans;} template T vec_sum(vector &a){assert(!a.empty());T ans=a[0]-a[0];for(auto &x:a) ans+=x;return ans;} int pop_count(long long a){int res=0;while(a){res+=(a&1),a>>=1;}return res;} void solve(); // oddloop int main() { ios::sync_with_stdio(false); cin.tie(nullptr); int t=1; cin>>t; rep(i,0,t) solve(); } void solve(){ int N; cin>>N; string S; cin>>S; string T="PDCA"; reverse(all(S)); reverse(all(T)); int ans=-1; auto f=[&](string s)->vector{ vector p(26); for(auto c:s) p[c-'A']++; return p; }; rep(i,0,4){ string U; rep(j,0,N) U+=T[(i+j)%4]; if(f(U)!=f(S)) continue; int ind=0; rep(j,0,N){ while(ind!=N&&U[ind]!=S[j]) ind++; if(ind!=N) ind++,chmax(ans,j+1); } } if(ans==-1) cout<<"-1\n"; else cout<

提出日時
ユーザー	potato167
言語	C++ (GCC 9.3.0)
結果	AC
実行時間	10 ms
メモリ	103160 kb

テストケース名	結果	実行時間	メモリ
00_sample-0000.txt	AC	3 ms	103160 kb
00_sample-0001.txt	AC	3 ms	103160 kb
01_test-0000.txt	AC	10 ms	103160 kb
01_test-0001.txt	AC	10 ms	103160 kb
01_test-0002.txt	AC	9 ms	103160 kb
01_test-0003.txt	AC	10 ms	103160 kb
01_test-0004.txt	AC	9 ms	103160 kb
01_test-0005.txt	AC	10 ms	103160 kb

I - Circular Shift on PDCA-Cycle

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