結果
問題 | No.125 悪の花弁 |
ユーザー | LayCurse |
提出日時 | 2014-11-25 22:44:41 |
言語 | C++11 (gcc 11.4.0) |
結果 |
AC
|
実行時間 | 164 ms / 5,000 ms |
コード長 | 3,750 bytes |
コンパイル時間 | 1,342 ms |
コンパイル使用メモリ | 170,152 KB |
実行使用メモリ | 23,296 KB |
最終ジャッジ日時 | 2024-06-11 00:18:05 |
合計ジャッジ時間 | 2,872 ms |
ジャッジサーバーID (参考情報) |
judge5 / 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 | 102 ms
21,632 KB |
testcase_01 | AC | 103 ms
22,144 KB |
testcase_02 | AC | 145 ms
23,296 KB |
testcase_03 | AC | 152 ms
23,168 KB |
testcase_04 | AC | 150 ms
23,040 KB |
testcase_05 | AC | 164 ms
23,040 KB |
ソースコード
#include<bits/stdc++.h> using namespace std; #define REP(i,a,b) for(i=a;i<b;i++) #define rep(i,n) REP(i,0,n) #define mygc(c) (c)=getchar_unlocked() #define mypc(c) putchar_unlocked(c) #define ll long long #define ull unsigned ll void reader(int *x){int k,m=0;*x=0;for(;;){mygc(k);if(k=='-'){m=1;break;}if('0'<=k&&k<='9'){*x=k-'0';break;}}for(;;){mygc(k);if(k<'0'||k>'9')break;*x=(*x)*10+k-'0';}if(m)(*x)=-(*x);} void reader(ll *x){int k,m=0;*x=0;for(;;){mygc(k);if(k=='-'){m=1;break;}if('0'<=k&&k<='9'){*x=k-'0';break;}}for(;;){mygc(k);if(k<'0'||k>'9')break;*x=(*x)*10+k-'0';}if(m)(*x)=-(*x);} int reader(char c[]){int i,s=0;for(;;){mygc(i);if(i!=' '&&i!='\n'&&i!='\r'&&i!='\t'&&i!=EOF) break;}c[s++]=i;for(;;){mygc(i);if(i==' '||i=='\n'||i=='\r'||i=='\t'||i==EOF) break;c[s++]=i;}c[s]='\0';return s;} template <class T, class S> void reader(T *x, S *y){reader(x);reader(y);} template <class T, class S, class U> void reader(T *x, S *y, U *z){reader(x);reader(y);reader(z);} template <class T, class S, class U, class V> void reader(T *x, S *y, U *z, V *w){reader(x);reader(y);reader(z);reader(w);} void writer(int x, char c){int s=0,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)mypc('-');while(s--)mypc(f[s]+'0');mypc(c);} void writer(ll x, char c){int s=0,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)mypc('-');while(s--)mypc(f[s]+'0');mypc(c);} void writer(const char c[]){int i;for(i=0;c[i]!='\0';i++)mypc(c[i]);} void writer(const char x[], char c){int i;for(i=0;x[i]!='\0';i++)mypc(x[i]);mypc(c);} template<class T> void writerLn(T x){writer(x,'\n');} template<class T, class S> void writerLn(T x, S y){writer(x,' ');writer(y,'\n');} template<class T, class S, class U> void writerLn(T x, S y, U z){writer(x,' ');writer(y,' ');writer(z,'\n');} template<class T> void writerArr(T x[], int n){int i;if(!n){mypc('\n');return;}rep(i,n-1)writer(x[i],' ');writer(x[n-1],'\n');} template<class T> T GCD(T a,T b){T r; while(a){r=b; b=a; a=r%a;} return b;} void extended_euclid(ll x,ll y,ll *c,ll *a,ll *b){ ll a0,a1,a2,b0,b1,b2,r0,r1,r2,q; r0=x; r1=y; a0=1; a1=0; b0=0; b1=1; while(r1>0){ q=r0/r1; r2=r0%r1; a2=a0-q*a1; b2=b0-q*b1; r0=r1; r1=r2; a0=a1; a1=a2; b0=b1; b1=b2; } *c=r0; *a=a0; *b=b0; } ll get_inv(ll n, ll p){ ll a,b,c; extended_euclid(n,p,&c,&a,&b); if(a<p) a+=p; return a%p; } #define MD 1000000007 int K, C[100001]; ll fact[1100000], fact_inv[1100000]; int cnt[1100000]; int solve(void){ int i, j, k, g, sum = 0; ll res = 0, add; rep(i,K) sum += C[i]; g = 0; rep(i,K) g = GCD(g, C[i]); rep(i,sum+1) cnt[i] = 0; rep(i,sum) cnt[sum/GCD(sum,i)]++; rep(k,sum+1) if(cnt[k] && g%k==0){ add = cnt[k] * fact[sum/k] % MD; rep(i,K) (add *= fact_inv[C[i]/k]) %= MD; (res += add) %= MD; } (res *= get_inv(sum, MD)) %= MD; return res; } int solve_brute(void){ int i, j, k, res = 0; set<string> s; string str, tmp, mn; rep(i,K) rep(j,C[i]) str += (char)('A'+i); do{ tmp = mn = str; rep(i,tmp.size()){ tmp = tmp.substr(1) + tmp[0]; mn = min(mn, tmp); } if(s.count(mn)==0) res++, s.insert(mn); }while(next_permutation(str.begin(), str.end())); return res; } int main(){ int i, j, k; int res, res1; fact[0] = 1; REP(i,1,1000100) fact[i] = fact[i-1] * i % MD; fact_inv[1000050] = get_inv(fact[1000050], MD); for(i=1000050-1;i>=0;i--) fact_inv[i] = fact_inv[i+1] * (i+1) % MD; reader(&K); rep(i,K) reader(C+i); res = solve(); writerLn(res); // res1 = solve_brute(); // writerLn(res,res1); // assert(res==res1); return 0; }