結果
問題 | No.834 Random Walk Trip |
ユーザー | NyaanNyaan |
提出日時 | 2019-05-24 23:07:05 |
言語 | C++14 (gcc 12.3.0 + boost 1.83.0) |
結果 |
WA
|
実行時間 | - |
コード長 | 6,347 bytes |
コンパイル時間 | 810 ms |
コンパイル使用メモリ | 94,336 KB |
実行使用メモリ | 11,264 KB |
最終ジャッジ日時 | 2024-09-17 12:16:14 |
合計ジャッジ時間 | 2,668 ms |
ジャッジサーバーID (参考情報) |
judge3 / judge6 |
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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 | 1 ms
5,248 KB |
testcase_01 | AC | 2 ms
5,376 KB |
testcase_02 | AC | 1 ms
5,376 KB |
testcase_03 | AC | 2 ms
5,376 KB |
testcase_04 | AC | 2 ms
5,376 KB |
testcase_05 | AC | 2 ms
5,376 KB |
testcase_06 | AC | 1 ms
5,376 KB |
testcase_07 | AC | 1 ms
5,376 KB |
testcase_08 | AC | 2 ms
5,376 KB |
testcase_09 | AC | 2 ms
5,376 KB |
testcase_10 | AC | 1 ms
5,376 KB |
testcase_11 | AC | 1 ms
5,376 KB |
testcase_12 | AC | 1 ms
5,376 KB |
testcase_13 | AC | 2 ms
5,376 KB |
testcase_14 | AC | 2 ms
5,376 KB |
testcase_15 | AC | 2 ms
5,376 KB |
testcase_16 | AC | 4 ms
5,376 KB |
testcase_17 | WA | - |
testcase_18 | AC | 49 ms
5,376 KB |
testcase_19 | AC | 272 ms
11,264 KB |
testcase_20 | AC | 47 ms
5,376 KB |
testcase_21 | WA | - |
testcase_22 | AC | 2 ms
5,376 KB |
testcase_23 | WA | - |
testcase_24 | AC | 14 ms
5,376 KB |
testcase_25 | WA | - |
ソースコード
#include <algorithm> #include <cassert> #include <cmath> #include <cstdarg> #include <cstdio> #include <cstring> #include <deque> #include <iomanip> #include <iostream> #include <iterator> #include <map> #include <numeric> #include <queue> #include <set> #include <stack> #include <string> #include <utility> #include <vector> #define whlie while #define mp make_pair #define pb push_back #define fi first #define se second #define inf 1001001001 #define infLL ( (1LL << 61) - 10) #define mod 1000000007 #define FOR(i,a,b) for(int (i)=((int)a); (i)<((int)b); (i)++) // [a,b) #define rep(i,N) FOR((i), 0, ((int)N)) // [0,N) #define FORR(i,a,b) for(int (i)=((int)b) - 1; (i)>=((int)a); (i)--) #define repr(i,N) FORR((i), 0, ((int)N)) #define all(v) (v).begin(),(v).end() #define sz(v) ((int)(v).size()) #define vrep(v,it) for(auto it=v.begin();it!=v.end();it++) #define vrepr(v,it) for(auto it=v.rbegin();it!=v.rend();it++) #define inx(t,...) t __VA_ARGS__; in(__VA_ARGS__) #define ini(...) int __VA_ARGS__; in(__VA_ARGS__) #define inl(...) ll __VA_ARGS__; in(__VA_ARGS__) #define inc(...) char __VA_ARGS__; in(__VA_ARGS__) #define ins(...) string __VA_ARGS__; in(__VA_ARGS__) #define ind(...) double __VA_ARGS__; in(__VA_ARGS__) #define inpii(...) pii __VA_ARGS__; in(__VA_ARGS__) #define invi(v,...) vi v; in(v,##__VA_ARGS__) #define invl(v,...) vl v; in(v,##__VA_ARGS__) #define mem(ar,val) memset((ar), (val), sizeof(ar) ) #define mem0(ar) memset((ar), 0, sizeof(ar) ) #define mem1(ar) memset((ar), -1, sizeof(ar) ) #ifdef LOCAL #define dbg(...) fprintf(stderr, __VA_ARGS__) #define trc(...) do { cout << #__VA_ARGS__ << "="; dbg_out(__VA_ARGS__);} while(0) #define stopif(val) assert( !(val) ) #define vdbg(v,...) do { cout << #v << " = "; vector_debug(v , ##__VA_ARGS__);} while(0) #else #define dbg(...) 1 #define trc(...) 1 #define stopif(...) 1 #define vdbg(...) 1 #endif using namespace std; typedef long long ll; typedef pair<int,int> pii; typedef pair<ll,ll> pll; typedef vector<int> vi; typedef vector<ll> vl; typedef vector<string> vs; typedef vector<pii> vpii; typedef vector< vector<int> > vvi; struct IoSetup { IoSetup() { cin.tie(nullptr); ios::sync_with_stdio(false); cout << fixed << setprecision(15); cerr << fixed << setprecision(15); } } iosetup; int gcd(int a, int b){if(a>b) swap(a,b); return a==0 ? b : gcd(b%a,a);} ll gcd(ll a, ll b){if(a>b) swap(a,b); return a==0 ? b : gcd(b%a,a);} int lcm(int a, int b){return (a / gcd(a,b)) * b;} ll lcm(ll a, ll b){return (a / gcd(a,b)) * b;} inline int pow(int a, int b){int ans = 1; rep(i,b) ans *= a; return ans;} inline ll pow(ll a, ll b){ll ans = 1; rep(i,b) ans*= a; return ans;} inline ll pow(int a, ll b){ll ans = 1; rep(i,b) ans*= a; return ans;} inline ll pow(ll a, int b){ll ans = 1; rep(i,b) ans*= a; return ans;} template<typename T, typename U> inline bool amin(T &x, U y) { return (y < x) ? (x = y, true) : false; } template<typename T, typename U> inline bool amax(T &x, U y) { return (x < y) ? (x = y, true) : false; } template<typename C> inline void _cin(C &c){cin >> c;} template<typename T,typename U> inline void _cin(pair<T,U> &p){cin >> p.fi; cin >> p.se;} template<typename C> inline void _cout(const C &c){cout << c;} template<typename T,typename U> inline void _cout(const pair<T,U> &p){cout << p.fi << ' ' << p.se;} void in(){} template <typename T,class... U> void in(T &t,U &...u){ _cin(t); in(u...);} void out(){cout << endl;} template <typename T,class... U> void out(const T &t,U ...u){ _cout(t); if(sizeof...(u)) cout << ' '; out(u...);} template<typename C> inline void in(vector<C> &v,int N=-1){if(sz(v) != 0){int M=(N == -1) ? sz(v) : N; rep(i,M) _cin(v[i]);}else{C c;rep(i,N) v.pb((_cin(c),c));}} template<typename C> inline void in(C v[],int N){rep(i,N) _cin(v[i]);} template<typename C> inline void out(const vector<C> &v,int N=-1){int M=(N == -1) ? sz(v) : N; rep(i,M) {cout<<( (i)?" ":"" ); _cout(v[i]);} cout<<endl; } template<typename C> inline void out(C v[],int N){rep(i,N) {cout<<( (i)?" ":"" ); _cout(v[i]);} cout<<endl; } template<typename C> inline void vector_debug(const vector<C> &v,int N=-1){cout << "{"; int M=(N == -1) ? sz(v) : N; rep(i,M) {cout<<( (i)?", ":"" ); _cout(v[i]);} cout<<"}"; } template<typename C> inline void vector_debug(C v[], int N){cout << "{"; rep(i,N) {cout<<((i)?", ":""); _cout(*(v+i));} cout<<"}\n";} void dbg_out(){cout << endl;} template <typename T,class... U> void dbg_out(const T &t,U ...u){ _cout(t); if(sizeof...(u)) cout << ", "; dbg_out(u...);} template<typename C,class... U> void dbg_out(const vector<C> &v,U ...u){vector_debug(v); if(sizeof...(u)) cout << ", "; dbg_out(u...);} template<typename C,class... U> void dbg_out(const vector<vector<C>> &v,U ...u){cout << "{ "; rep(i,sz(v)) {if(i)cout<<", "; vector_debug(v[i]);} cout << " }"; if(sizeof...(u)) cout << ", "; dbg_out(u...);} template<typename C> inline C vmax(const vector<C> &v){C n=v[0]; rep(i,sz(v)) amax(n,v[i]); return n;} template<typename C> inline C vmax(C v[], int N){C n=v[0]; rep( i , N ) amax(n,v[i]); return n;} template<typename C> inline C vmin(const vector<C> &v){C n=v[0]; rep(i,sz(v)) amin(n,v[i]); return n;} template<typename C> inline C vmin(C v[], int N){C n=v[0]; rep( i , N ) amin(n,v[i]); return n;} template<typename C> inline C vsum(const vector<C> &v){C n=0; rep(i,sz(v)) n+=v[i]; return n;} template<typename C> inline C vsum(C v[], int N){C n=0; rep( i , N ) n+=v[i]; return n;} //////////// /// main /// //////////// // mod inline ll madd(ll a, ll b){return (a + b) % mod;} inline ll msub(ll a, ll b){return (a + mod - b) % mod;} inline ll mmul(ll a, ll b){return ((a % mod) * (b % mod)) % mod;} ll mpow(ll a, ll b){if(b == 0) return 1; else if(b == 1) return a % mod; else if(b % 2 == 0){ll hlf = mpow(a,b/2);return (hlf * hlf) % mod;} else {ll hlf = mpow(a,b/2);return ( mmul(hlf , hlf) * a ) % mod;}} inline ll mdiv(ll a, ll b){return mmul(a, mpow(b, mod-2));} ll C[1000100]; int main(){ ini(N,M); if(N == 1){ out(1); return 0; } rep(i,M+1){ if(i == 0) C[i] = 1; else C[i] = mdiv(mmul( C[i-1], M + 1 - i) , i); //trc(C[i], i); } ll ans = C[M / 2]; FOR(i,1,1000010){ if(M < i) break; if(i + 1 >= 2 * N){ ans = madd(ans , C[(M - i) / 2]); } //trc(i,ans); } out(ans); }