結果
問題 | No.906 Y字グラフ |
ユーザー | tonegawa |
提出日時 | 2020-08-12 15:16:40 |
言語 | C++17 (gcc 12.3.0 + boost 1.83.0) |
結果 |
AC
|
実行時間 | 2 ms / 2,000 ms |
コード長 | 2,496 bytes |
コンパイル時間 | 1,264 ms |
コンパイル使用メモリ | 117,636 KB |
実行使用メモリ | 6,824 KB |
最終ジャッジ日時 | 2024-10-09 18:25:17 |
合計ジャッジ時間 | 2,259 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 | 2 ms
6,816 KB |
testcase_01 | AC | 2 ms
6,816 KB |
testcase_02 | AC | 2 ms
6,820 KB |
testcase_03 | AC | 2 ms
6,824 KB |
testcase_04 | AC | 2 ms
6,816 KB |
testcase_05 | AC | 2 ms
6,816 KB |
testcase_06 | AC | 2 ms
6,820 KB |
testcase_07 | AC | 2 ms
6,820 KB |
testcase_08 | AC | 2 ms
6,816 KB |
testcase_09 | AC | 2 ms
6,820 KB |
testcase_10 | AC | 2 ms
6,816 KB |
testcase_11 | AC | 2 ms
6,816 KB |
testcase_12 | AC | 2 ms
6,820 KB |
testcase_13 | AC | 2 ms
6,820 KB |
testcase_14 | AC | 2 ms
6,820 KB |
testcase_15 | AC | 2 ms
6,820 KB |
testcase_16 | AC | 2 ms
6,820 KB |
testcase_17 | AC | 2 ms
6,816 KB |
testcase_18 | AC | 2 ms
6,816 KB |
testcase_19 | AC | 2 ms
6,816 KB |
testcase_20 | AC | 2 ms
6,816 KB |
testcase_21 | AC | 2 ms
6,824 KB |
testcase_22 | AC | 2 ms
6,820 KB |
testcase_23 | AC | 2 ms
6,816 KB |
testcase_24 | AC | 2 ms
6,820 KB |
testcase_25 | AC | 2 ms
6,816 KB |
testcase_26 | AC | 2 ms
6,816 KB |
testcase_27 | AC | 2 ms
6,816 KB |
testcase_28 | AC | 2 ms
6,816 KB |
testcase_29 | AC | 2 ms
6,816 KB |
testcase_30 | AC | 2 ms
6,816 KB |
testcase_31 | AC | 2 ms
6,820 KB |
ソースコード
#include <iostream> #include <string> #include <vector> #include <queue> #include <deque> #include <algorithm> #include <set> #include <map> #include <bitset> #include <cmath> #include <functional> #include <iomanip> #define vll vector<ll> #define vvvl vector<vvl> #define vvl vector<vector<ll>> #define VV(a, b, c, d) vector<vector<d>>(a, vector<d>(b, c)) #define VVV(a, b, c, d) vector<vvl>(a, vvl(b, vll (c, d))); #define re(c, b) for(ll c=0;c<b;c++) #define all(obj) (obj).begin(), (obj).end() typedef long long int ll; typedef long double ld; using namespace std; #define P 1000000007 #define N_MAX 100 ll fac[N_MAX+1], inv[N_MAX+1], finv[N_MAX+1]; ll comb(ll n, ll k){ if(n<0||k<0||n<k) return 0; return (((fac[n]*finv[n-k])%P)*finv[k])%P; } ll perm(ll n, ll k){ if(n<0||k<0||n<k) return 0; return (fac[n]*finv[n-k])%P; } void init(){ fac[0] = finv[0] = fac[1] = finv[1] = inv[1] = 1; for(int i = 2; i <= N_MAX; i++){ fac[i] = (fac[i-1]*i)%P; inv[i] = ((-(P/i)*inv[P%i])%P+P)%P; finv[i] = (finv[i-1]*inv[i])%P; } } ll mpow(ll a, ll b){ ll ret = 1, num = a; while(b>0){ if(b%2) ret = (ret*num)%P; num = (num*num)%P; b /= 2; } return ret; } struct ml{ ll n; ml(ll n):n(n){} ml operator + (ml a){return (this->n + a.n)%P;} ml operator - (ml a){return (this->n - a.n + P)%P;} ml operator * (ml a){return (this->n * a.n)%P;} ml operator / (ml a){return (this->n*(a.n<=N_MAX?inv[a.n]:mpow(a.n,P-2)))%P;} ml operator + (ll a){return (this->n + a)%P;} ml operator - (ll a){return (this->n - a + P)%P;} ml operator * (ll a){return (this->n * a)%P;} ml operator / (ll a){return (this->n*(a<=N_MAX?inv[a]:mpow(a,P-2)))%P;} ml operator ^ (ll a){return mpow(this->n, a);} void operator += (ml a){n = (this->n + a.n)%P;} void operator -= (ml a){n = (this->n - a.n + P)%P;} void operator *= (ml a){n = (this->n * a.n)%P;} void operator /= (ml a){n = (this->n*(a.n<=N_MAX?inv[a.n]:mpow(a.n,P-2)))%P;} void operator += (ll a){n = (this->n + a)%P;} void operator -= (ll a){n = (this->n - a + P)%P;} void operator *= (ll a){n = (this->n * a)%P;} void operator /= (ll a){n = (this->n*(a<=N_MAX?inv[a]:mpow(a,P-2)))%P;} void operator ^= (ll a){n = mpow(this->n, a);} }; int main(int argc, char const *argv[]) { ll n;std::cin >> n; init(); ml N(n); ml ans = (N-2)*(N-3)/2; if((n-1)%3==0) ans += 2; ll ad = ((n-4)/2 + 1)%P; ml x(ad); ad *= 3; ans += ad; std::cout << (ans/6).n << '\n'; return 0; }