結果

問題 No.2018 X-Y-X
ユーザー snukesnuke
提出日時 2022-07-23 02:43:11
言語 C++17
(gcc 12.3.0 + boost 1.83.0)
結果
AC  
実行時間 16 ms / 2,000 ms
コード長 3,146 bytes
コンパイル時間 2,136 ms
コンパイル使用メモリ 206,840 KB
実行使用メモリ 7,248 KB
最終ジャッジ日時 2024-07-04 11:57:12
合計ジャッジ時間 3,555 ms
ジャッジサーバーID
(参考情報)
judge5 / judge2
このコードへのチャレンジ
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テストケース

テストケース表示
入力 結果 実行時間
実行使用メモリ
testcase_00 AC 2 ms
5,248 KB
testcase_01 AC 2 ms
5,376 KB
testcase_02 AC 2 ms
5,376 KB
testcase_03 AC 2 ms
5,376 KB
testcase_04 AC 2 ms
5,376 KB
testcase_05 AC 2 ms
5,376 KB
testcase_06 AC 16 ms
7,248 KB
testcase_07 AC 16 ms
7,176 KB
testcase_08 AC 14 ms
6,112 KB
testcase_09 AC 15 ms
6,144 KB
testcase_10 AC 8 ms
5,376 KB
testcase_11 AC 10 ms
5,452 KB
testcase_12 AC 11 ms
5,496 KB
testcase_13 AC 15 ms
6,880 KB
testcase_14 AC 13 ms
6,064 KB
testcase_15 AC 16 ms
6,776 KB
testcase_16 AC 13 ms
6,376 KB
testcase_17 AC 15 ms
6,572 KB
testcase_18 AC 9 ms
5,376 KB
testcase_19 AC 15 ms
7,204 KB
testcase_20 AC 16 ms
6,236 KB
testcase_21 AC 14 ms
6,888 KB
testcase_22 AC 14 ms
6,908 KB
testcase_23 AC 4 ms
5,376 KB
testcase_24 AC 14 ms
5,900 KB
testcase_25 AC 15 ms
6,224 KB
testcase_26 AC 12 ms
5,392 KB
testcase_27 AC 8 ms
5,376 KB
testcase_28 AC 2 ms
5,376 KB
testcase_29 AC 5 ms
5,376 KB
testcase_30 AC 6 ms
5,376 KB
testcase_31 AC 10 ms
5,376 KB
testcase_32 AC 13 ms
6,140 KB
権限があれば一括ダウンロードができます

ソースコード

diff #

#include <bits/stdc++.h>
#define rep(i,n) for(int i = 0; i < (n); ++i)
#define rep1(i,n) for(int i = 1; i <= (n); ++i)
#define drep(i,n) for(int i = (n)-1; i >= 0; --i)
#define srep(i,s,t) for (int i = s; i < (t); ++i)
#define rng(a) a.begin(),a.end()
#define rrng(a) a.rbegin(),a.rend()
#define fi first
#define se second
#define pb push_back
#define eb emplace_back
#define pob pop_back
#define sz(x) (int)(x).size()
#define pcnt __builtin_popcountll
#define snuke srand((unsigned)clock()+(unsigned)time(NULL));
#define newline puts("")
using namespace std;
template<typename T> using vc = vector<T>;
template<typename T> using vv = vc<vc<T>>;
template<typename T> using PQ = priority_queue<T,vc<T>,greater<T>>;
using uint = unsigned; using ull = unsigned long long;
using vi = vc<int>; using vvi = vv<int>; using vvvi = vv<vi>;
using ll = long long; using vl = vc<ll>; using vvl = vv<ll>; using vvvl = vv<vl>;
using P = pair<int,int>; using vp = vc<P>; using vvp = vv<P>;
int getInt(){int x;scanf("%d",&x);return x;}
vi pm(int n, int s=0) { vi a(n); iota(rng(a),s); return a;}
template<typename T>istream& operator>>(istream&i,vc<T>&v){rep(j,sz(v))i>>v[j];return i;}
template<typename T>string join(const T&v,const string& d=""){stringstream s;rep(i,sz(v))(i?s<<d:s)<<v[i];return s.str();}
template<typename T>ostream& operator<<(ostream&o,const vc<T>&v){if(sz(v))o<<join(v," ");return o;}
template<typename T1,typename T2>istream& operator>>(istream&i,pair<T1,T2>&v){return i>>v.fi>>v.se;}
template<typename T1,typename T2>ostream& operator<<(ostream&o,const pair<T1,T2>&v){return o<<v.fi<<","<<v.se;}
template<typename T1,typename T2>bool mins(T1& x,const T2&y){if(x>y){x=y;return true;}else return false;}
template<typename T1,typename T2>bool maxs(T1& x,const T2&y){if(x<y){x=y;return true;}else return false;}
template<typename Tx, typename Ty>Tx dup(Tx x, Ty y){return (x+y-1)/y;}
template<typename T>ll suma(const vc<T>&a){ll res(0);for(auto&&x:a)res+=x;return res;}
template<typename T>ll suma(const vv<T>&a){ll res(0);for(auto&&x:a)res+=suma(x);return res;}
template<typename T>void uni(T& a){sort(rng(a));a.erase(unique(rng(a)),a.end());}
template<typename T>void prepend(vc<T>&a,const T&x){a.insert(a.begin(),x);}
const double eps = 1e-10;
const ll LINF = 1001002003004005006ll;
const int INF = 1001001001;
#define dame { puts("-1"); return;}
#define yes { puts("Yes"); return;}
#define no { puts("No"); return;}
#define ret(x) { cout<<(x)<<endl; return;}
#define yn {puts("Yes");}else{puts("No");}
const int MX = 200005;

struct Solver {
  void solve() {
    int n;
    scanf("%d",&n);
    string s, t;
    cin>>s>>t;
    if (s[0] != t[0]) dame;
    if (s[n-1] != t[n-1]) dame;
    auto f = [&](string s) {
      vi a;
      rep(i,n-1) a.pb(s[i]==s[i+1]);
      rep(i,n-1) a[i] ^= i&1;
      vi is;
      rep(i,n-1) if (a[i]) is.pb(i);
      return is;
    };
    vi a = f(s);
    vi b = f(t);
    if (sz(a) != sz(b)) dame;
    ll ans = 0;
    rep(i,sz(a)) ans += abs(a[i]-b[i]);
    cout<<ans<<endl;
  }
};

int main() {
  int ts = 1;
  // scanf("%d",&ts);
  rep1(ti,ts) {
    Solver solver;
    solver.solve();
  }
  return 0;
}
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