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IDProblemSubmitterResultTimeMemoryLanguageFile sizeSubmit timeJudge time
#280697#7789. Outro: True Love Waitsucup-team1191#WA 0ms3856kbC++207.0kb2023-12-09 17:37:062023-12-09 17:37:07

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你现在查看的是最新测评结果

  • [2023-12-09 17:37:07]
  • 评测
  • 测评结果：WA
  • 用时：0ms
  • 内存：3856kb
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  • [2023-12-09 17:37:06]
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answer

/*
    author:  Maksim1744
    created: 09.12.2023 12:28:16
*/

#include "bits/stdc++.h"

using namespace std;

using ll = long long;
using ld = long double;

#define mp   make_pair
#define pb   push_back
#define eb   emplace_back

#define sum(a)     ( accumulate ((a).begin(), (a).end(), 0ll))
#define mine(a)    (*min_element((a).begin(), (a).end()))
#define maxe(a)    (*max_element((a).begin(), (a).end()))
#define mini(a)    ( min_element((a).begin(), (a).end()) - (a).begin())
#define maxi(a)    ( max_element((a).begin(), (a).end()) - (a).begin())
#define lowb(a, x) ( lower_bound((a).begin(), (a).end(), (x)) - (a).begin())
#define uppb(a, x) ( upper_bound((a).begin(), (a).end(), (x)) - (a).begin())

template<typename T>             vector<T>& operator--            (vector<T> &v){for (auto& i : v) --i;            return  v;}
template<typename T>             vector<T>& operator++            (vector<T> &v){for (auto& i : v) ++i;            return  v;}
template<typename T>             istream& operator>>(istream& is,  vector<T> &v){for (auto& i : v) is >> i;        return is;}
template<typename T>             ostream& operator<<(ostream& os,  vector<T>  v){for (auto& i : v) os << i << ' '; return os;}
template<typename T, typename U> pair<T,U>& operator--           (pair<T, U> &p){--p.first; --p.second;            return  p;}
template<typename T, typename U> pair<T,U>& operator++           (pair<T, U> &p){++p.first; ++p.second;            return  p;}
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, pair<T, U>  p){os << p.first << ' ' << p.second; return os;}
template<typename T, typename U> pair<T,U> operator-(pair<T,U> a, pair<T,U> b){return mp(a.first-b.first, a.second-b.second);}
template<typename T, typename U> pair<T,U> operator+(pair<T,U> a, pair<T,U> b){return mp(a.first+b.first, a.second+b.second);}
template<typename T, typename U> void umin(T& a, U b){if (a > b) a = b;}
template<typename T, typename U> void umax(T& a, U b){if (a < b) a = b;}

#ifdef HOME
#define SHOW_COLORS
#include "/mnt/c/Libs/tools/print.cpp"
#else
#define show(...) void(0)
#define debugf(fun)   fun
#define debugv(var)   var
#define mclock    void(0)
#define shows     void(0)
#define debug  if (false)
#define OSTREAM(...)    ;
#define OSTREAM0(...)   ;
#endif

namespace mint_ns {
template<auto P>
struct Modular {
    using value_type = decltype(P);
    value_type value;

    Modular(long long k = 0) : value(norm(k)) {}

    friend Modular<P>& operator += (      Modular<P>& n, const Modular<P>& m) { n.value += m.value; if (n.value >= P) n.value -= P; return n; }
    friend Modular<P>  operator +  (const Modular<P>& n, const Modular<P>& m) { Modular<P> r = n; return r += m; }

    friend Modular<P>& operator -= (      Modular<P>& n, const Modular<P>& m) { n.value -= m.value; if (n.value < 0)  n.value += P; return n; }
    friend Modular<P>  operator -  (const Modular<P>& n, const Modular<P>& m) { Modular<P> r = n; return r -= m; }
    friend Modular<P>  operator -  (const Modular<P>& n)                      { return Modular<P>(-n.value); }

    friend Modular<P>& operator *= (      Modular<P>& n, const Modular<P>& m) { n.value = n.value * 1ll * m.value % P; return n; }
    friend Modular<P>  operator *  (const Modular<P>& n, const Modular<P>& m) { Modular<P> r = n; return r *= m; }

    friend Modular<P>& operator /= (      Modular<P>& n, const Modular<P>& m) { return n *= m.inv(); }
    friend Modular<P>  operator /  (const Modular<P>& n, const Modular<P>& m) { Modular<P> r = n; return r /= m; }

    Modular<P>& operator ++ (   ) { return *this += 1; }
    Modular<P>& operator -- (   ) { return *this -= 1; }
    Modular<P>  operator ++ (int) { Modular<P> r = *this; *this += 1; return r; }
    Modular<P>  operator -- (int) { Modular<P> r = *this; *this -= 1; return r; }

    friend bool operator == (const Modular<P>& n, const Modular<P>& m) { return n.value == m.value; }
    friend bool operator != (const Modular<P>& n, const Modular<P>& m) { return n.value != m.value; }

    explicit    operator       int() const { return value; }
    explicit    operator      bool() const { return value; }
    explicit    operator long long() const { return value; }

    constexpr static value_type mod()      { return     P; }

    value_type norm(long long k) {
        if (!(-P <= k && k < P)) k %= P;
        if (k < 0) k += P;
        return k;
    }

    Modular<P> inv() const {
        value_type a = value, b = P, x = 0, y = 1;
        while (a != 0) { value_type k = b / a; b -= k * a; x -= k * y; swap(a, b); swap(x, y); }
        return Modular<P>(x);
    }
};
template<auto P> Modular<P> pow(Modular<P> m, long long p) {
    Modular<P> r(1);
    while (p) {
        if (p & 1) r *= m;
        m *= m;
        p >>= 1;
    }
    return r;
}

template<auto P> ostream& operator << (ostream& o, const Modular<P>& m) { return o << m.value; }
template<auto P> istream& operator >> (istream& i,       Modular<P>& m) { long long k; i >> k; m.value = m.norm(k); return i; }
template<auto P> string   to_string(const Modular<P>& m) { return to_string(m.value); }

using Mint = Modular<1000000007>;
// using Mint = Modular<998244353>;
// using Mint = long double;

vector<Mint> f, fi;
void init_C(int n) {
    f.assign(n, 1); fi.assign(n, 1);
    for (int i = 2; i < n; ++i) f[i] = f[i - 1] * i;
    fi.back() = Mint(1) / f.back();
    for (int i = n - 2; i >= 0; --i) fi[i] = fi[i + 1] * (i + 1);
}
Mint C(int n, int k) {
    if (k < 0 || k > n) return 0;
    else return f[n] * fi[k] * fi[n - k];
}
}
using namespace mint_ns;

void test_case(int test) {
    string s, t;
    cin >> s >> t;
    int len = max(s.size(), t.size());
    ll k;
    cin >> k;
    if (len % 2 == 1) ++len;
    auto fix = [&](string& u) {
        reverse(u.begin(), u.end());
        u.resize(len, '0');
        reverse(u.begin(), u.end());
    };
    fix(s);
    fix(t);
    vector<int> v(len);
    for (int i = 0; i < len; ++i) {
        v[i] = (s[i] != t[i]);
    }
    if (count(v.begin(), v.end(), 0) == len) {
        cout << (pow(Mint(4), k) - 1) / 3 - 1 << '\n';
        return;
    }
    if (k > 2) {
        cout << -1 << '\n';
        return;
    }
    show(v);
    auto at = [&](int i) {
        return v[i] * 2 + v[i + 1];
    };
    if (k > 1 && at(len-2) != 0) {
        cout << -1 << '\n';
        return;
    }
    Mint pos = 0;
    for (int i = 0; i < len; i += 2) {
        int x = at(i);
        pos *= 5;
        if (x == 1) pos += 1;
        else if (x == 3) pos += 2;
        else if (x == 2) pos += 3;
    }
    if (k == 2) pos += 4;
    cout << pos << '\n';
}

int main() {
    ios_base::sync_with_stdio(false); cin.tie(NULL);

    int T;
    cin >> T;
    for (int test = 1; test <= T; ++test) {
        test_case(test);
    }

    return 0;
}
Source code, Language: C++20

Details

Tip: Click on the bar to expand more detailed information

Test #1:

score: 100
Accepted
time: 0ms
memory: 3540kb

input:

4
1 10 1
1 10 2
100 0 2
11 11 3

output:

2
-1
9
20

result:

ok 4 number(s): "2 -1 9 20"

Test #2:

score: 0
Accepted
time: 0ms
memory: 3856kb

input:

1
0 0 1

output:

0

result:

ok 1 number(s): "0"

Test #3:

score: -100
Wrong Answer
time: 0ms
memory: 3556kb

input:

100
110111 11111 1
10110 101101 1
11010 111111 1
100110 1 1
10010 11010 1
1100 10111 1
100100 111110 1
101110 101100 1
1011 10110 1
110100 1110 1
11010 11000 1
11110 1000 1
111000 11101 1
110 1001 1
101010 11000 1
10 111110 1
110001 101000 1
1010 1000 1
10101 11 1
111011 11010 1
110001 100000 1
1100...

output:

90
67
81
82
15
42
43
3
36
68
3
33
81
12
53
60
41
3
33
76
26
43
62
81
77
31
37
88
38
18
65
13
93
15
27
82
81
40
18
27
33
50
81
62
6
0
75
3
33
15
10
16
92
28
41
67
83
13
27
35
25
38
27
56
25
55
7
52
50
3
41
87
67
33
63
43
33
32
33
82
63
16
62
55
28
18
91
68
8
30
76
66
36
6
8
41
2
80
50
52

result:

wrong answer 1st numbers differ - expected: '78', found: '90'
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