結果
問題 | No.1001 注文の多い順列 |
ユーザー | LayCurse |
提出日時 | 2020-02-28 23:06:34 |
言語 | C++17 (gcc 12.3.0 + boost 1.83.0) |
結果 |
AC
|
実行時間 | 67 ms / 2,000 ms |
コード長 | 11,278 bytes |
コンパイル時間 | 2,811 ms |
コンパイル使用メモリ | 213,636 KB |
実行使用メモリ | 50,816 KB |
最終ジャッジ日時 | 2024-10-13 18:58:17 |
合計ジャッジ時間 | 5,219 ms |
ジャッジサーバーID (参考情報) |
judge3 / judge4 |
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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 | 33 ms
39,108 KB |
testcase_01 | AC | 34 ms
38,656 KB |
testcase_02 | AC | 36 ms
38,656 KB |
testcase_03 | AC | 37 ms
38,656 KB |
testcase_04 | AC | 37 ms
38,656 KB |
testcase_05 | AC | 37 ms
38,528 KB |
testcase_06 | AC | 37 ms
38,656 KB |
testcase_07 | AC | 37 ms
38,656 KB |
testcase_08 | AC | 37 ms
38,656 KB |
testcase_09 | AC | 36 ms
38,528 KB |
testcase_10 | AC | 37 ms
38,784 KB |
testcase_11 | AC | 38 ms
38,656 KB |
testcase_12 | AC | 37 ms
38,656 KB |
testcase_13 | AC | 38 ms
38,528 KB |
testcase_14 | AC | 36 ms
39,040 KB |
testcase_15 | AC | 38 ms
39,296 KB |
testcase_16 | AC | 38 ms
39,168 KB |
testcase_17 | AC | 37 ms
39,040 KB |
testcase_18 | AC | 63 ms
48,128 KB |
testcase_19 | AC | 58 ms
47,232 KB |
testcase_20 | AC | 53 ms
45,184 KB |
testcase_21 | AC | 49 ms
44,544 KB |
testcase_22 | AC | 63 ms
49,024 KB |
testcase_23 | AC | 67 ms
49,280 KB |
testcase_24 | AC | 39 ms
38,656 KB |
testcase_25 | AC | 65 ms
49,152 KB |
testcase_26 | AC | 39 ms
38,784 KB |
testcase_27 | AC | 45 ms
40,064 KB |
testcase_28 | AC | 49 ms
41,216 KB |
testcase_29 | AC | 51 ms
49,920 KB |
testcase_30 | AC | 50 ms
49,408 KB |
testcase_31 | AC | 52 ms
49,408 KB |
testcase_32 | AC | 52 ms
50,816 KB |
testcase_33 | AC | 39 ms
38,912 KB |
ソースコード
#pragma GCC optimize ("Ofast") #include<bits/stdc++.h> using namespace std; #define MD (1000000007U) void *wmem; char memarr[96000000]; template<class T> inline void walloc1d(T **arr, int x, void **mem = &wmem){ static int skip[16] = {0, 15, 14, 13, 12, 11, 10, 9, 8, 7, 6, 5, 4, 3, 2, 1}; (*mem) = (void*)( ((char*)(*mem)) + skip[((unsigned long long)(*mem)) & 15] ); (*arr)=(T*)(*mem); (*mem)=((*arr)+x); } struct Modint{ unsigned val; Modint(){ val=0; } Modint(int a){ val = ord(a); } Modint(unsigned a){ val = ord(a); } Modint(long long a){ val = ord(a); } Modint(unsigned long long a){ val = ord(a); } inline unsigned ord(unsigned a){ return a%MD; } inline unsigned ord(int a){ a %= (int)MD; if(a < 0){ a += MD; } return a; } inline unsigned ord(unsigned long long a){ return a%MD; } inline unsigned ord(long long a){ a %= (int)MD; if(a < 0){ a += MD; } return a; } inline unsigned get(){ return val; } inline Modint &operator+=(Modint a){ val += a.val; if(val >= MD){ val -= MD; } return *this; } inline Modint &operator-=(Modint a){ if(val < a.val){ val = val + MD - a.val; } else{ val -= a.val; } return *this; } inline Modint &operator*=(Modint a){ val = ((unsigned long long)val*a.val)%MD; return *this; } inline Modint &operator/=(Modint a){ return *this *= a.inverse(); } inline Modint operator+(Modint a){ return Modint(*this)+=a; } inline Modint operator-(Modint a){ return Modint(*this)-=a; } inline Modint operator*(Modint a){ return Modint(*this)*=a; } inline Modint operator/(Modint a){ return Modint(*this)/=a; } inline Modint operator+(int a){ return Modint(*this)+=Modint(a); } inline Modint operator-(int a){ return Modint(*this)-=Modint(a); } inline Modint operator*(int a){ return Modint(*this)*=Modint(a); } inline Modint operator/(int a){ return Modint(*this)/=Modint(a); } inline Modint operator+(long long a){ return Modint(*this)+=Modint(a); } inline Modint operator-(long long a){ return Modint(*this)-=Modint(a); } inline Modint operator*(long long a){ return Modint(*this)*=Modint(a); } inline Modint operator/(long long a){ return Modint(*this)/=Modint(a); } inline Modint operator-(void){ Modint res; if(val){ res.val=MD-val; } else{ res.val=0; } return res; } inline operator bool(void){ return val!=0; } inline operator int(void){ return get(); } inline operator long long(void){ return get(); } inline Modint inverse(){ int a = val; int b = MD; int u = 1; int v = 0; int t; Modint res; while(b){ t = a / b; a -= t * b; swap(a, b); u -= t * v; swap(u, v); } if(u < 0){ u += MD; } res.val = u; return res; } inline Modint pw(unsigned long long b){ Modint a(*this); Modint res; res.val = 1; while(b){ if(b&1){ res *= a; } b >>= 1; a *= a; } return res; } inline bool operator==(int a){ return ord(a)==val; } inline bool operator!=(int a){ return ord(a)!=val; } } ; inline Modint operator+(int a, Modint b){ return Modint(a)+=b; } inline Modint operator-(int a, Modint b){ return Modint(a)-=b; } inline Modint operator*(int a, Modint b){ return Modint(a)*=b; } inline Modint operator/(int a, Modint b){ return Modint(a)/=b; } inline Modint operator+(long long a, Modint b){ return Modint(a)+=b; } inline Modint operator-(long long a, Modint b){ return Modint(a)-=b; } inline Modint operator*(long long a, Modint b){ return Modint(a)*=b; } inline Modint operator/(long long a, Modint b){ return Modint(a)/=b; } inline void rd(int &x){ int k; int m=0; x=0; for(;;){ k = getchar_unlocked(); if(k=='-'){ m=1; break; } if('0'<=k&&k<='9'){ x=k-'0'; break; } } for(;;){ k = getchar_unlocked(); if(k<'0'||k>'9'){ break; } x=x*10+k-'0'; } if(m){ x=-x; } } inline void wt_L(char a){ putchar_unlocked(a); } inline void wt_L(int x){ int s=0; int m=0; char f[10]; if(x<0){ m=1; x=-x; } while(x){ f[s++]=x%10; x/=10; } if(!s){ f[s++]=0; } if(m){ putchar_unlocked('-'); } while(s--){ putchar_unlocked(f[s]+'0'); } } inline void wt_L(unsigned x){ int s=0; char f[10]; while(x){ f[s++]=x%10; x/=10; } if(!s){ f[s++]=0; } while(s--){ putchar_unlocked(f[s]+'0'); } } inline void wt_L(long long x){ int s=0; int m=0; char f[20]; if(x<0){ m=1; x=-x; } while(x){ f[s++]=x%10; x/=10; } if(!s){ f[s++]=0; } if(m){ putchar_unlocked('-'); } while(s--){ putchar_unlocked(f[s]+'0'); } } inline void wt_L(unsigned long long x){ int s=0; char f[21]; while(x){ f[s++]=x%10; x/=10; } if(!s){ f[s++]=0; } while(s--){ putchar_unlocked(f[s]+'0'); } } inline void wt_L(Modint x){ int i; i = (int)x; wt_L(i); } inline void wt_L(double x){ printf("%.15f",x); } inline void wt_L(const char c[]){ int i=0; for(i=0;c[i]!='\0';i++){ putchar_unlocked(c[i]); } } inline void wt_L(string &x){ int i=0; for(i=0;x[i]!='\0';i++){ putchar_unlocked(x[i]); } } template<class S, class T> inline S chmax(S &a, T b){ if(a<b){ a=b; } return a; } template<class T> struct Comb{ int mem_fact; T *factri; T *ifactri; Comb(){ mem_fact = 0; } inline void expand_fact(int k){ if(k <= mem_fact){ return; } chmax(k, 2* mem_fact); if(mem_fact == 0){ int i; factri = (T*)malloc(k * sizeof(T)); ifactri = (T*)malloc(k * sizeof(T)); factri[0] = 1; for(i=(1);i<(k);i++){ factri[i] = i * factri[i-1]; } ifactri[k-1] = 1 / factri[k-1]; for(i=(k-1)-1;i>=(0);i--){ ifactri[i] = (i+1) * ifactri[i+1]; } } else{ int i; factri = (T*)realloc(factri, k * sizeof(T)); ifactri = (T*)realloc(ifactri, k * sizeof(T)); for(i=(mem_fact);i<(k);i++){ factri[i] = i * factri[i-1]; } ifactri[k-1] = 1 / factri[k-1]; for(i=(k-1)-1;i>=(mem_fact);i--){ ifactri[i] = (i+1) * ifactri[i+1]; } } mem_fact = k; } inline T fac(int k){ if(mem_fact < k+1){ expand_fact(k+1); } return factri[k]; } inline T ifac(int k){ if(mem_fact < k+1){ expand_fact(k+1); } return ifactri[k]; } inline T C(int a, int b){ if(b < 0 || b > a){ return 0; } if(mem_fact < a+1){ expand_fact(a+1); } return factri[a] * ifactri[b] * ifactri[a-b]; } inline T P(int a, int b){ if(b < 0 || b > a){ return 0; } if(mem_fact < a+1){ expand_fact(a+1); } return factri[a] * ifactri[a-b]; } inline T H(int a, int b){ if(a==0 && b==0){ return 1; } if(a <= 0 || b < 0){ return 0; } if(mem_fact < a+b){ expand_fact(a+b); } return C(a+b-1, b); } inline T Multinomial(int sz, int a[]){ int i; int s = 0; T res; for(i=(0);i<(sz);i++){ s += a[i]; } if(mem_fact < s+1){ expand_fact(s+1); } res = factri[s]; for(i=(0);i<(sz);i++){ res *= ifactri[a[i]]; } return 1; } inline T Multinomial(int a){ return 1; } inline T Multinomial(int a, int b){ if(mem_fact < a+b+1){ expand_fact(a+b+1); } return factri[a+b] * ifactri[a] * ifactri[b]; } inline T Multinomial(int a, int b, int c){ if(mem_fact < a+b+c+1){ expand_fact(a+b+c+1); } return factri[a+b+c] * ifactri[a] * ifactri[b] * ifactri[c]; } inline T Multinomial(int a, int b, int c, int d){ if(mem_fact < a+b+c+d+1){ expand_fact(a+b+c+d+1); } return factri[a+b+c+d] * ifactri[a] * ifactri[b] * ifactri[c] * ifactri[d]; } inline T Catalan(int n){ if(n < 0){ return 0; } if(mem_fact < 2*n+1){ expand_fact(2*n+1); } return factri[2*n] * ifactri[n] * ifactri[n+1]; } inline T C_s(long long a, long long b){ long long i; T res; if(b < 0 || b > a){ return 0; } if(b > a - b){ b = a - b; } res = 1; for(i=(0);i<(b);i++){ res *= a - i; res /= i + 1; } return res; } inline T P_s(long long a, long long b){ long long i; T res; if(b < 0 || b > a){ return 0; } res = 1; for(i=(0);i<(b);i++){ res *= a - i; } return res; } inline T per_s(long long n, long long k){ T d; int m; if(n < 0 || k < 0){ return 0; } if(n == k && k == 0){ return 1; } if(n == 0 || k == 0){ return 0; } if(k==1){ return 1; } if(k==2){ d = n / 2; return d; } if(k==3){ d = (n-1) / 6; m = (n-1) % 6; if(m==0){ return 3 * d * d + d; } if(m==1){ return 3 * d * d + 2 * d; } if(m==2){ return 3 * d * d + 3 * d + 1; } if(m==3){ return 3 * d * d + 4 * d + 1; } if(m==4){ return 3 * d * d + 5 * d + 2; } if(m==5){ return 3 * d * d + 6 * d + 3; } } assert(0 && "per_s should be k <= 3"); return -1; } } ; int N; int T; int X; int As; int A[3000]; int ac[3001]; int Bs; int B[3000]; int bc[3001]; Modint dp[3001][3001]; int vis[3001][3001]; Modint solve(int x, int y){ int k = x + y; Modint res = 0; if(vis[x][y]){ return dp[x][y]; } vis[x][y] = 1; if(k==N){ return dp[x][y] = 1; } if(x < As && ac[k] - (As-1-x) > 0){ res += solve(x+1, y) * (ac[k] - (As-1-x)); } if(y < Bs && bc[k] - y > 0){ res += solve(x, y+1) * (bc[k] - y); } return dp[x][y] = res; } int main(){ int i; wmem = memarr; Modint res; Comb<Modint> c; rd(N); for(i=(0);i<(N);i++){ rd(T); rd(X); if(T==0){ A[As++] = X; } if(T==1){ B[Bs++] = N-X+1; } } for(i=(0);i<(As);i++){ int j; for(j=(0);j<(A[i]);j++){ ac[j]++; } } for(i=(0);i<(Bs);i++){ int j; for(j=(0);j<(B[i]);j++){ bc[N-1-j]++; } } wt_L(solve(0,0)); wt_L('\n'); return 0; } // cLay varsion 20200227-1 // --- original code --- // int N, T, X; // int As, A[3000], ac[3001]; // int Bs, B[3000], bc[3001]; // Modint dp[3001][3001]; // int vis[3001][3001]; // // Modint solve(int x, int y){ // int k = x + y; // Modint res = 0; // // if(vis[x][y]) return dp[x][y]; // vis[x][y] = 1; // if(k==N) return dp[x][y] = 1; // // if(x < As && ac[k] - (As-1-x) > 0) res += solve(x+1, y) * (ac[k] - (As-1-x)); // if(y < Bs && bc[k] - y > 0) res += solve(x, y+1) * (bc[k] - y); // // return dp[x][y] = res; // } // // { // Modint res; // Comb<Modint> c; // // rd(N); // rep(i,N){ // rd(T,X); // if(T==0) A[As++] = X; // if(T==1) B[Bs++] = N-X+1; // } // rep(i,As) rep(j,A[i]) ac[j]++; // rep(i,Bs) rep(j,B[i]) bc[N-1-j]++; // // wt(solve(0,0)); // }