結果
| 問題 | No.2373 wa, wo, n | 
| コンテスト | |
| ユーザー |  | 
| 提出日時 | 2023-07-07 21:42:02 | 
| 言語 | C++17 (gcc 13.3.0 + boost 1.87.0) | 
| 結果 | 
                                AC
                                 
                             | 
| 実行時間 | 19 ms / 2,000 ms | 
| コード長 | 3,090 bytes | 
| コンパイル時間 | 1,973 ms | 
| コンパイル使用メモリ | 195,104 KB | 
| 最終ジャッジ日時 | 2025-02-15 07:00:25 | 
| ジャッジサーバーID (参考情報) | judge4 / judge2 | 
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| ファイルパターン | 結果 | 
|---|---|
| sample | AC * 4 | 
| other | AC * 39 | 
ソースコード
#include <bits/stdc++.h>
using namespace std;
#define fast_io ios::sync_with_stdio(false); cin.tie(nullptr);
#pragma GCC optimize("Ofast,no-stack-protector,unroll-loops,fast-math")
typedef long long ll;
typedef long double ld;
#define chmin(a,b) a = min(a,b);
#define chmax(a,b) a = max(a,b);
#define bit_count(x) __builtin_popcountll(x)
#define leading_zero_count(x) __builtin_clz(x)
#define trailing_zero_count(x) __builtin_ctz(x)
#define gcd(a,b) __gcd(a,b)
#define lcm(a,b) a / gcd(a,b) * b
#define rep(i,n) for(int i = 0 ; i < n ; i++)
#define rrep(i,a,b) for(int i = a ; i < b ; i++)
#define repi(it,S) for(auto it = S.begin() ; it != S.end() ; it++)
#define pt(a) cout << a << endl;
#define debug(a) cout << #a << " " << a << endl;
#define all(a) a.begin(), a.end()
#define endl "\n";
#define v1(n,a) vector<ll>(n,a)
#define v2(n,m,a) vector<vector<ll>>(n,v1(m,a))
#define v3(n,m,k,a) vector<vector<vector<ll>>>(n,v2(m,k,a))
#define v4(n,m,k,l,a) vector<vector<vector<vector<ll>>>>(n,v3(m,k,l,a))
template<typename T,typename U>istream &operator>>(istream&is,pair<T,U>&p){is>>p.first>>p.second;return is;}
template<typename T,typename U>ostream &operator<<(ostream&os,const pair<T,U>&p){os<<p.first<<" "<<p.second;return os;}
template<typename T>istream &operator>>(istream&is,vector<T>&v){for(T &in:v){is>>in;}return is;}
template<typename T>ostream &operator<<(ostream&os,const vector<T>&v){for(auto it=v.begin();it!=v.end();){os<<*it<<((++it)!=v.end()?" ":"");}return os;}
template<typename T>istream &operator>>(istream&is,vector<vector<T>>&v){for(T &in:v){is>>in;}return is;}
template<typename T>ostream &operator<<(ostream&os,const vector<vector<T>>&v){for(auto it=v.begin();it!=v.end();){os<<*it<<((++it)!=v.end()?"\n":"");}return os;}
template<typename T>ostream &operator<<(ostream&os,const set<T>&v){for(auto it=v.begin();it!=v.end();){os<<*it<<((++it)!=v.end()?" ":"");}return os;}
template<typename T>ostream &operator<<(ostream&os,const multiset<T>&v){for(auto it=v.begin();it!=v.end();){os<<*it<<((++it)!=v.end()?" ":"");}return os;}
void solve(){
    int n;
    string S;
    cin >> n >> S;
    if(S[n-1] == 'w'){
        cout << "No" << endl ;
        return;
    }
    if(S[0] == 'a'){
        cout << "No" << endl ;
        return;
    }
    if(S[0] == 'o'){
        cout << "No" << endl ;
        return;
    }
    S += '-';
    rep(i,n){
        if(S[i] != 'w' && S[i] != 'a' && S[i] != 'o' && S[i] != 'n' && S[i] != '?'){
            cout << "No" << endl ;
            return;
        }
        if(S[i] == 'w') {
            if(S[i+1] == '?'){
                S[i+1] = 'a';
                continue;
            }
            if(S[i+1] == 'a') continue;
            if(S[i+1] == 'o') continue;
            cout << "No" << endl ;
            return;
        }
        if(S[i] == 'a' || S[i] == 'o') {
            if(S[i-1] == '?') continue;
            if(S[i-1] == 'w') continue;
            cout << "No" << endl ;
            return;
        }
    }
    cout << "Yes" << endl ;
}
int main(){
    fast_io
    int t = 1;
    // cin >> t;
    rep(i,t) solve();
}
            
            
            
        