結果
問題 | No.117 組み合わせの数 |
ユーザー | hamray |
提出日時 | 2019-09-21 17:45:54 |
言語 | C++11 (gcc 11.4.0) |
結果 |
WA
|
実行時間 | - |
コード長 | 5,671 bytes |
コンパイル時間 | 1,493 ms |
コンパイル使用メモリ | 168,580 KB |
実行使用メモリ | 50,432 KB |
最終ジャッジ日時 | 2024-09-19 03:01:01 |
合計ジャッジ時間 | 2,235 ms |
ジャッジサーバーID (参考情報) |
judge3 / judge2 |
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コンパイルメッセージ
main.cpp: In function ‘int main()’: main.cpp:235:14: warning: ignoring return value of ‘int scanf(const char*, ...)’ declared with attribute ‘warn_unused_result’ [-Wunused-result] 235 | scanf(" %c(%d,%d)", &c, &n, &k); | ~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~
ソースコード
#include <bits/stdc++.h> #define M_PI 3.14159265358979323846 using namespace std; //conversion //------------------------------------------ inline int toInt(string s) { int v; istringstream sin(s); sin >> v; return v; } template<class T> inline string toString(T x) { ostringstream sout; sout << x; return sout.str(); } inline int readInt() { int x; scanf("%d", &x); return x; } //typedef //------------------------------------------ typedef vector<int> VI; typedef vector<VI> VVI; typedef vector<string> VS; typedef pair<int, int> PII; typedef pair<int, PII> TIII; typedef long long LL; typedef unsigned long long ULL; typedef vector<LL> VLL; typedef vector<VLL> VVLL; //container util //------------------------------------------ #define ALL(a) (a).begin(),(a).end() #define RALL(a) (a).rbegin(), (a).rend() #define PB push_back #define MP make_pair #define SZ(a) int((a).size()) #define SQ(a) ((a)*(a)) #define EACH(i,c) for(typeof((c).begin()) i=(c).begin(); i!=(c).end(); ++i) #define EXIST(s,e) ((s).find(e)!=(s).end()) #define SORT(c) sort((c).begin(),(c).end()) //repetition //------------------------------------------ #define FOR(i,s,n) for(int i=s;i<(int)n;++i) #define REP(i,n) FOR(i,0,n) #define MOD 1000000007 #define rep(i, a, b) for(int i = a; i < (b); ++i) #define trav(a, x) for(auto& a : x) #define all(x) x.begin(), x.end() #define sz(x) (int)(x).size() typedef long long ll; typedef pair<int, int> pii; typedef vector<int> vi; const double EPS = 1E-8; #define chmin(x,y) x=min(x,y) #define chmax(x,y) x=max(x,y) const int INF = 100000000; struct Edge { int to, from; ll cost; Edge(int from, int to, ll cost): from(from), to(to), cost(cost) {} }; struct UnionFind { vector<int> data; UnionFind(int size) : data(size, -1) { } bool unionSet(int x, int y) { x = root(x); y = root(y); if (x != y) { if (data[y] < data[x]) swap(x, y); data[x] += data[y]; data[y] = x; } return x != y; } bool findSet(int x, int y) { return root(x) == root(y); } int root(int x) { return data[x] < 0 ? x : data[x] = root(data[x]); } int size(int x) { return -data[root(x)]; } }; typedef vector<vector<Edge>> AdjList; AdjList graph; ll mod_pow(ll x, ll n, ll mod){ ll res = 1; bool c = false; while(n){ if(n&1) res = res * x; if(res > mod){ c = true; res %= mod; } x = x * x %mod; n >>= 1; } if(c) return mod; return res; } #define SIEVE_SIZE 10000+10 bool sieve[SIEVE_SIZE]; void make_sieve(){ for(int i=0; i<SIEVE_SIZE; ++i) sieve[i] = true; sieve[0] = sieve[1] = false; for(int i=2; i*i<SIEVE_SIZE; ++i) if(sieve[i]) for(int j=2; i*j<SIEVE_SIZE; ++j) sieve[i*j] = false; } bool isprime(ll n){ for(ll i=2; i*i<=n; ++i) if(n%i==0) return false; return true; } template<typename T> vector<T> gauss_jordan(const vector<vector<T>>& A, const vector<T>& b){ int n = A.size(); vector<vector<T>> B(n, vector<T>(n+1)); for(int i=0; i<n; ++i){ for(int j=0; j<n; ++j){ B[i][j] = A[i][j]; } } for(int i=0; i<n; ++i) B[i][n] = b[i]; for(int i=0; i<n; ++i){ int pivot = i; for(int j=i; j<n; ++j){ if(abs(B[j][i]) > abs(B[pivot][i])) pivot = j; } swap(B[i], B[pivot]); if(abs(B[i][i]) < EPS) return vector<T>(); //解なし for(int j=i+1; j<=n; ++j) B[i][j] /= B[i][i]; for(int j=0; j<n; ++j){ if(i != j){ for(int k=i+1; k<=n; ++k) B[j][k] -= B[i][j] * B[i][k]; } } } vector<T> x(n); for(int i=0; i<n; ++i) x[i] = B[i][n]; return x; } ll GCD(ll a, ll b){ if(a<b) swap(a,b); if(b == 0) return a; return GCD(b, a%b); } typedef vector<ll> vec; typedef vector<vec> mat; mat mul(mat &A, mat &B) { mat C(A.size(), vec((int)B[0].size())); for(int i=0; i<A.size(); ++i){ for(int k=0; k<B.size(); ++k){ for(int j=0; j<B[0].size(); ++j){ C[i][j] = (C[i][j] + A[i][k] * B[k][j] %MOD) % MOD; } } } return C; } mat mat_pow(mat A, ll n) { mat B(A.size(), vec((int)A.size())); for(int i=0; i<A.size(); ++i){ B[i][i] = 1; } while(n > 0) { if(n & 1) B = mul(B, A); A = mul(A, A); n >>= 1; } return B; } bool operator<(const pii& a, const pii& b){ if(a.first == b.first) return a.second < b.second; return a.first < b.first; } const int NUM_ = 2000003; ll fact[NUM_+1], factr[NUM_+1], inv[NUM_+1]; void init(){ int i; inv[1] = fact[0] = factr[0] = 1; for(int i=2; i<=NUM_; ++i) inv[i] = inv[MOD % i] * (MOD - MOD / i) % MOD; for(int i=1; i<=NUM_; ++i) fact[i] = fact[i-1]*i%MOD, factr[i] = factr[i-1]*inv[i]%MOD; } ll combi(int n, int k) { if(k < 0 || k > n) return 0; return fact[n]*factr[k]%MOD*factr[n-k]%MOD; } ll perm(int n, int k){ if(k < 0 || k > n) return 0; return fact[n] * factr[n-k] %MOD; } ll hcomb(int n, int k){ if(n == 0 && k == 0) return 1; return combi(n + k - 1, k); } int main() { cin.tie(0); ios::sync_with_stdio(false); //cout << fixed << setprecision(20); init(); int T; cin >> T; while(T--){ char c; int n, k; scanf(" %c(%d,%d)", &c, &n, &k); if(c=='C'){ cout << combi(n, k) << endl; }else if(c == 'P'){ cout << perm(n, k) << endl; }else{ cout << hcomb(n, k) << endl; } } return 0; }