結果
問題 | No.660 家を通り過ぎないランダムウォーク問題 |
ユーザー | satanic |
提出日時 | 2018-03-03 00:53:29 |
言語 | C++14 (gcc 12.3.0 + boost 1.83.0) |
結果 |
AC
|
実行時間 | 17 ms / 2,000 ms |
コード長 | 7,032 bytes |
コンパイル時間 | 1,065 ms |
コンパイル使用メモリ | 118,368 KB |
実行使用メモリ | 11,284 KB |
最終ジャッジ日時 | 2024-06-23 01:31:36 |
合計ジャッジ時間 | 2,868 ms |
ジャッジサーバーID (参考情報) |
judge2 / 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 | 15 ms
11,016 KB |
testcase_01 | AC | 15 ms
11,184 KB |
testcase_02 | AC | 15 ms
11,208 KB |
testcase_03 | AC | 16 ms
11,264 KB |
testcase_04 | AC | 15 ms
11,244 KB |
testcase_05 | AC | 15 ms
11,164 KB |
testcase_06 | AC | 15 ms
11,236 KB |
testcase_07 | AC | 15 ms
11,228 KB |
testcase_08 | AC | 15 ms
11,180 KB |
testcase_09 | AC | 16 ms
11,264 KB |
testcase_10 | AC | 15 ms
11,064 KB |
testcase_11 | AC | 16 ms
11,264 KB |
testcase_12 | AC | 16 ms
11,168 KB |
testcase_13 | AC | 15 ms
11,116 KB |
testcase_14 | AC | 15 ms
11,264 KB |
testcase_15 | AC | 14 ms
11,120 KB |
testcase_16 | AC | 14 ms
11,140 KB |
testcase_17 | AC | 16 ms
11,284 KB |
testcase_18 | AC | 15 ms
11,196 KB |
testcase_19 | AC | 14 ms
11,172 KB |
testcase_20 | AC | 15 ms
11,244 KB |
testcase_21 | AC | 15 ms
11,120 KB |
testcase_22 | AC | 14 ms
11,112 KB |
testcase_23 | AC | 15 ms
11,240 KB |
testcase_24 | AC | 14 ms
11,264 KB |
testcase_25 | AC | 15 ms
11,136 KB |
testcase_26 | AC | 15 ms
11,264 KB |
testcase_27 | AC | 15 ms
11,280 KB |
testcase_28 | AC | 15 ms
11,104 KB |
testcase_29 | AC | 14 ms
11,128 KB |
testcase_30 | AC | 14 ms
11,140 KB |
testcase_31 | AC | 14 ms
11,140 KB |
testcase_32 | AC | 17 ms
11,264 KB |
testcase_33 | AC | 15 ms
11,128 KB |
testcase_34 | AC | 15 ms
11,132 KB |
testcase_35 | AC | 15 ms
11,188 KB |
testcase_36 | AC | 15 ms
11,136 KB |
testcase_37 | AC | 16 ms
11,136 KB |
testcase_38 | AC | 16 ms
11,128 KB |
testcase_39 | AC | 15 ms
11,216 KB |
testcase_40 | AC | 15 ms
11,152 KB |
testcase_41 | AC | 15 ms
11,116 KB |
testcase_42 | AC | 15 ms
11,136 KB |
testcase_43 | AC | 16 ms
11,224 KB |
testcase_44 | AC | 16 ms
11,136 KB |
ソースコード
// need #include <iostream> #include <algorithm> // data structure #include <bitset> #include <map> #include <queue> #include <set> #include <stack> #include <string> #include <utility> #include <vector> //#include <complex> //#include <deque> #include <valarray> // stream //#include <istream> //#include <sstream> //#include <ostream> #include <fstream> // etc #include <cassert> #include <cmath> #include <functional> #include <iomanip> #include <chrono> #include <random> #include <numeric> // input #define INIT std::ios::sync_with_stdio(false);std::cin.tie(0); #define VAR(type, ...)type __VA_ARGS__;MACRO_VAR_Scan(__VA_ARGS__); template<typename T> void MACRO_VAR_Scan(T& t) { std::cin >> t; } template<typename First, typename...Rest>void MACRO_VAR_Scan(First& first, Rest&...rest) { std::cin >> first; MACRO_VAR_Scan(rest...); } #define VEC_ROW(type, n, ...)std::vector<type> __VA_ARGS__;MACRO_VEC_ROW_Init(n, __VA_ARGS__); for(int i=0; i<n; ++i){MACRO_VEC_ROW_Scan(i, __VA_ARGS__);} template<typename T> void MACRO_VEC_ROW_Init(int n, T& t) { t.resize(n); } template<typename First, typename...Rest>void MACRO_VEC_ROW_Init(int n, First& first, Rest&...rest) { first.resize(n); MACRO_VEC_ROW_Init(n, rest...); } template<typename T> void MACRO_VEC_ROW_Scan(int p, T& t) { std::cin >> t[p]; } template<typename First, typename...Rest>void MACRO_VEC_ROW_Scan(int p, First& first, Rest&...rest) { std::cin >> first[p]; MACRO_VEC_ROW_Scan(p, rest...); } #define VEC(type, c, n) std::vector<type> c(n);for(auto& i:c)std::cin>>i; #define MAT(type, c, m, n) std::vector<std::vector<type>> c(m, std::vector<type>(n));for(auto& r:c)for(auto& i:r)std::cin>>i; // output #define OUT(d) std::cout<<(d); #define FOUT(n, d) std::cout<<std::fixed<<std::setprecision(n)<<(d); #define SOUT(n, c, d) std::cout<<std::setw(n)<<std::setfill(c)<<(d); #define SP std::cout<<" "; #define TAB std::cout<<"\t"; #define BR std::cout<<"\n"; #define SPBR(i, n) std::cout<<(i + 1 == n ? '\n' : ' '); #define ENDL std::cout<<std::endl; #define FLUSH std::cout<<std::flush; #define SHOW(d) {std::cerr << #d << "\t:" << (d) << "\n";} #define SHOWVECTOR(v) {std::cerr << #v << "\t:";for(const auto& xxx : v){std::cerr << xxx << " ";}std::cerr << "\n";} #define SHOWVECTOR2(v) {std::cerr << #v << "\t:\n";for(const auto& xxx : v){for(const auto& yyy : xxx){std::cerr << yyy << " ";}std::cerr << "\n";}} #define SHOWQUEUE(a) {auto tmp(a);std::cerr << #a << "\t:";while(!tmp.empty()){std::cerr << tmp.front() << " ";tmp.pop();}std::cerr << "\n";} // utility #define ALL(a) (a).begin(),(a).end() #define FOR(i, a, b) for(int i=(a);i<(b);++i) #define RFOR(i, a, b) for(int i=(b)-1;i>=(a);--i) #define REP(i, n) for(int i=0;i<int(n);++i) #define RREP(i, n) for(int i=int(n)-1;i>=0;--i) #define FORLL(i, a, b) for(ll i=ll(a);i<ll(b);++i) #define RFORLL(i, a, b) for(ll i=ll(b)-1;i>=ll(a);--i) #define REPLL(i, n) for(ll i=0;i<ll(n);++i) #define RREPLL(i, n) for(ll i=ll(n)-1;i>=0;--i) #define IN(a, x, b) (a<=x && x<b) template<typename T> inline T CHMAX(T& a, const T b) { return a = (a < b) ? b : a; } template<typename T> inline T CHMIN(T& a, const T b) { return a = (a > b) ? b : a; } #define EXCEPTION(msg) throw std::string("Exception : " msg " [ in ") + __func__ + " : " + std::to_string(__LINE__) + " lines ]" #define TRY(cond, msg) try {if (cond) EXCEPTION(msg);}catch (std::string s) {std::cerr << s << std::endl;} void CHECKTIME(std::function<void()> f) { auto start = std::chrono::system_clock::now(); f(); auto end = std::chrono::system_clock::now(); auto res = std::chrono::duration_cast<std::chrono::nanoseconds>((end - start)).count(); std::cerr << "[Time:" << res << "ns (" << res / (1.0e9) << "s)]\n"; } // test template<class T> std::vector<std::vector<T>> VV(int n, int m, T init = T()) { return std::vector<std::vector<T>>(n, std::vector<T>(m, init)); } template<typename S, typename T> std::ostream& operator<<(std::ostream& os, std::pair<S, T> p) { os << "(" << p.first << ", " << p.second << ")"; return os; } // type/const #define int ll using ll = long long; using ull = unsigned long long; using ld = long double; using PAIR = std::pair<int, int>; using PAIRLL = std::pair<ll, ll>; constexpr int INFINT = 1 << 30; // 1.07x10^ 9 constexpr int INFINT_LIM = (1LL << 31) - 1; // 2.15x10^ 9 constexpr ll INFLL = 1LL << 60; // 1.15x10^18 constexpr ll INFLL_LIM = (1LL << 62) - 1 + (1LL << 62); // 9.22x10^18 constexpr double EPS = 1e-9; constexpr int MOD = 1000000007; constexpr double PI = 3.141592653589793238462643383279; template<class T, size_t N> void FILL(T(&a)[N], const T& val) { for (auto& x : a) x = val; } template<class ARY, size_t N, size_t M, class T> void FILL(ARY(&a)[N][M], const T& val) { for (auto& b : a) FILL(b, val); } template<class T> void FILL(std::vector<T>& a, const T& val) { for (auto& x : a) x = val; } template<class ARY, class T> void FILL(std::vector<std::vector<ARY>>& a, const T& val) { for (auto& b : a) FILL(b, val); } // ------------>8------------------------------------->8------------ ll powMod(ll n, ll p, ll mod) { ll res = 1; while (p) { if (p & 1) (res *= n) %= mod; (n *= n) %= mod; p >>= 1; } return res; } ll invMod(ll n, ll mod) { return powMod(n, MOD - 2, MOD); } const signed FACT_MAX_N = 1000006; signed fact[FACT_MAX_N]; signed factInv[FACT_MAX_N]; struct INIT_FACT { INIT_FACT() { fact[0] = 1; for (int i = 1; i < FACT_MAX_N; ++i) fact[i] = (long long)i * fact[i - 1] % MOD; factInv[FACT_MAX_N - 1] = powMod(fact[FACT_MAX_N - 1], MOD - 2, MOD); for (int i = FACT_MAX_N - 2; i >= 0; --i) factInv[i] = (long long)(i + 1) * factInv[i + 1] % MOD; } } init_fact; #if true // true if use MOD /* n,r<=10^6, query O(1)*/ ll Permutation(int n, int r) { if (r == 0) return 1; if (n < r) return 0; return (long long)fact[n] * factInv[n - r] % MOD; } ll Combination(int n, int r) { if (r == 0) return 1; if (n < r) return 0; return (long long)fact[n] * factInv[n - r] % MOD * factInv[r] % MOD; } ll CombinationWithRepetition(ll n, ll r) { return Combination(n + r - 1, r); } /*n<=10^9, r<=10^5, query O(r)*/ /*ll Combination(ll n, ll r, ll mod) { if (n < r) return 0; ll ans = 1; if (n < 2 * r) r = n - r; for (int i = 1; i <= r; ++i) { ans *= n - i + 1; ans %= mod; ans *= powMod(i, mod - 2, mod); ans %= mod; } return ans; } ll Permutation(int n, int r, int mod) { return Combination(n, r, mod) * fact[r] % MOD; }*/ #else // unuse MOD const signed COMB_MAX_N = 67; // <- max : 67 long long comb[COMB_MAX_N][COMB_MAX_N]; struct INIT_COMB { INIT_COMB() { for (int i = 0; i < COMB_MAX_N; ++i) { for (int j = 0; j <= i; ++j) { if (j == 0 || j == i) comb[i][j] = 1; else comb[i][j] = comb[i - 1][j - 1] + comb[i - 1][j]; } } } } init_comb; #endif signed main() { INIT; VAR(int, n); int ans = 1; FOR(i, 1, n / 2 + 1) { (ans += Combination(n + i - 1 + i, i) - Combination(n + i - 1 + i, i - 1)) %= MOD; } if (ans < 0) ans += MOD; OUT(ans)BR; return 0; }