結果
問題 | No.2269 eN!の整数部分の下1桁 |
ユーザー |
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提出日時 | 2023-10-06 09:21:48 |
言語 | C++17 (gcc 13.3.0 + boost 1.87.0) |
結果 |
AC
|
実行時間 | 128 ms / 2,000 ms |
コード長 | 3,015 bytes |
コンパイル時間 | 1,048 ms |
コンパイル使用メモリ | 119,916 KB |
最終ジャッジ日時 | 2025-02-17 04:36:42 |
ジャッジサーバーID (参考情報) |
judge2 / judge5 |
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ファイルパターン | 結果 |
---|---|
other | AC * 23 |
ソースコード
#include<iostream>#include<vector>#include<algorithm>#include<cstring>#include<cassert>#include<cmath>#include<ctime>#include<iomanip>#include<numeric>#include<stack>#include<queue>#include<map>#include<unordered_map>#include<set>#include<unordered_set>#include<bitset>#include<random>using namespace std;template<int m> struct modint{private:unsigned int value;static constexpr int mod() {return m;}public:constexpr modint(const long long x = 0) noexcept{long long y = x;if(y < 0 || y >= mod()){y %= mod();if(y < 0) y += mod();}value = (unsigned int)y;}constexpr unsigned int val() noexcept {return value;}constexpr modint &operator+=(const modint &other) noexcept{value += other.value;if(value >= mod()) value -= mod();return *this;}constexpr modint &operator-=(const modint &other) noexcept{unsigned int x = value;if(x < other.value) x += mod();x -= other.value;value = x;return *this;}constexpr modint &operator*=(const modint &other) noexcept{unsigned long long x = value;x *= other.value;value = (unsigned int) (x % mod());return *this;}constexpr modint &operator/=(const modint &other) noexcept{return *this *= other.inverse();}constexpr modint inverse() const noexcept{assert(value);long long a = value,b = mod(),x = 1,y = 0;while(b){long long q = a/b;a -= q*b; swap(a,b);x -= q*y; swap(x,y);}return modint(x);}constexpr modint power(long long N) const noexcept{assert(N >= 0);modint p = *this,ret = 1;while(N){if(N & 1) ret *= p;p *= p;N >>= 1;}return ret;}constexpr modint operator+() {return *this;}constexpr modint operator-() {return modint() - *this;}constexpr modint &operator++(int) noexcept {return *this += 1;}constexpr modint &operator--(int) noexcept {return *this -= 1;}friend modint operator+(const modint& lhs, const modint& rhs) {return modint(lhs) += rhs;}friend modint operator-(const modint& lhs, const modint& rhs) {return modint(lhs) -= rhs;}friend modint operator*(const modint& lhs, const modint& rhs) {return modint(lhs) *= rhs;}friend modint operator/(const modint& lhs, const modint& rhs) {return modint(lhs) /= rhs;}friend ostream &operator<<(ostream &os,const modint &x) {return os << x.value;}};using mint = modint<998244353>;//using mint = modint<1000000007>;void solve(){long long N;cin >> N;if(N == 0){cout << "2\n";return;}/*if(N >= 10) cout << "1\n";else{long long ans = 0;long long t = 1;for(int i = N;i >= 1;i--){ans += t;t *= i;}ans += t;//24 24 12 4 1//1 + 1 + 1/2 + 1/6 + 1/24ans %= 10;cout << ans << "\n";}*/long long ans = 0;long long t = 1;for(long long i = N;;i--){ans += t;if(i%10 == 0) break;t *= i%10;t %= 10;}ans %= 10;cout << ans << endl;}int main(){ios::sync_with_stdio(false);cin.tie(nullptr);int T = 1;cin >> T;while(T--) solve();}