結果
問題 | No.2699 Simple Math (Returned) |
ユーザー | Today03 |
提出日時 | 2024-03-29 21:30:43 |
言語 | C++17 (gcc 12.3.0 + boost 1.83.0) |
結果 |
WA
|
実行時間 | - |
コード長 | 3,209 bytes |
コンパイル時間 | 2,070 ms |
コンパイル使用メモリ | 201,680 KB |
実行使用メモリ | 6,824 KB |
最終ジャッジ日時 | 2024-09-30 15:39:10 |
合計ジャッジ時間 | 7,537 ms |
ジャッジサーバーID (参考情報) |
judge5 / judge1 |
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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 | WA | - |
testcase_02 | AC | 409 ms
5,248 KB |
testcase_03 | AC | 323 ms
5,248 KB |
testcase_04 | WA | - |
testcase_05 | WA | - |
testcase_06 | WA | - |
testcase_07 | WA | - |
testcase_08 | WA | - |
testcase_09 | WA | - |
testcase_10 | WA | - |
testcase_11 | WA | - |
ソースコード
#include <bits/stdc++.h> #ifdef LOCAL #include "./debug.cpp" #else #define debug(...) #define print_line #endif using namespace std; using ll = long long; template <ll MOD> struct modint { ll value; modint(ll x = 0) { if (x >= 0) { value = x % MOD; } else { value = MOD - (-x) % MOD; } } modint operator-() const { return modint(-value); } modint operator+() const { return modint(*this); } modint &operator+=(const modint &other) { value += other.value; if (value >= MOD) { value -= MOD; } return *this; } modint &operator-=(const modint &other) { value += MOD - other.value; if (value >= MOD) { value -= MOD; } return *this; } modint &operator*=(const modint other) { value = value * other.value % MOD; return *this; } modint &operator/=(modint other) { (*this) *= other.inv(); return *this; } modint operator+(const modint &other) const { return modint(*this) += other; } modint operator-(const modint &other) const { return modint(*this) -= other; } modint operator*(const modint &other) const { return modint(*this) *= other; } modint operator/(const modint &other) const { return modint(*this) /= other; } modint pow(ll x) const { modint ret(1), mul(value); while (x) { if (x & 1) { ret *= mul; } mul *= mul; x >>= 1; } return ret; } modint inv() const { return pow(MOD - 2); } bool operator==(const modint &other) const { return value == other.value; } bool operator!=(const modint &other) const { return value != other.value; } friend ostream &operator<<(ostream &os, const modint &x) { return os << x.value; } friend istream &operator>>(istream &is, modint &x) { ll v; is >> v; x = modint<MOD>(v); return is; } }; using mod998 = modint<998244353>; using mod107 = modint<1000000007>; using mint = mod998; bool check(ll n, ll m) { while (n < m) { n *= 2; } return n == m; } int main() { int T; cin >> T; while (T--) { ll N, M; cin >> N >> M; if (check(M, N)) { cout << 0 << '\n'; continue; } if (N <= M) { mint ans = mint(10).pow(N); ans -= 1; cout << ans << '\n'; } else { ll L = N - M; L %= 2 * M; if (L <= M) { if (L == 0) { cout << 0 << '\n'; continue; } mint ans = mint(10).pow(M) - 1; mint sub = mint(10).pow(L) * 9; ans -= sub; cout << ans << '\n'; } else { L -= M; mint ans = mint(9) * (mint(10).pow(L) - 1) * mint(9).inv(); cout << ans << '\n'; } } } }