Submission #15469

#	Time	Username	Problem	Language	Result	Execution time	Memory
15469		myungwoo	괄호 문자열 (kriii3_R)	C++14	0 / 113	3263 ms	1216 KiB

R

#include<stdio.h>
#include<math.h>
#include<algorithm>
#include<vector>

using namespace std;

typedef long long ll;
typedef pair<ll,ll> pii;

ll mod[100];
ll a[100];

ll N, K, M;

vector<ll> L, X, CT;

ll pw(ll a, ll b, ll mod)
{
    ll ans = 1, mul = a;
    while( b ) {
        if( b % 2 == 1 ) ans = ans * mul % mod;
        mul = mul * mul % mod, b /= 2;
    }
    return ans;
}

ll get_fact(ll N, ll mul, ll p)
{
    if( N == 0 ) return 1;
    ll q = N / mul, r = N % mul;
    ll ans = 1, fac = 1;
    for(ll i = 1; i <= r; i++){
        if( i % p == 0 ) continue;
        ans = (ans * i ) % mul;
    }
    if( mul / p * (p-1) % 2 == 0 || q % 2 == 0 ) fac = 1;
    else fac = -1;
    if( q == 0 ) return ans * get_fact(N/p, mul, p) % mul;
    ans = fac * ans % mul;
    return ans * get_fact(N / p, mul, p) % mul;
}

ll gcd(ll a, ll b){
    return b == 0 ? a : gcd(b, a%b);
}

pii extended_gcd(ll a, ll b){
    if( b == 0 ) return pii(1, 0);
    pii t = extended_gcd(b, a%b);
    return pii( t.second, t.first - t.second * (a/b) );
}

ll modinverse(ll a, ll m)
{
    return (extended_gcd(a, m).first % m + m ) % m;
}

ll cr(ll *a, ll *n, int size)
{
    if( size == 1 ) return *a;
    ll tmp = modinverse(n[0], n[1]);
    ll tmp2 = (tmp * (a[1] - a[0]) % n[1] + n[1] ) % n[1];
    ll ora = a[1];
    ll tgcd = gcd(n[0], n[1]);
    a[1] = a[0] + n[0] / tgcd * tmp2;
    n[1] *= n[0] / tgcd;
    ll ret = cr(a+1, n+1, size-1);
    n[1] /= n[0] / tgcd;
    a[1] = ora;
    return ret;
}

ll fact(ll n, ll M, bool ch)
{
    int sz = 0;
    for(int c = 0; c < L.size(); c++){
        ll m = L[c];
        ll i = X[c];
        ll cnt = CT[c];
        a[sz] = get_fact(n, m, i);
        if( !ch ){
            ll su = N*2, tot = 0;
            while( su ) tot += su / i, su /= i;
            su = N+1;
            while( su ) tot -= su / i, su /= i;
            su = N;
            while( su ) tot -= su / i, su /= i;
            if( tot > cnt ) a[sz] = 0;
            else{
                for(int j = 0; j < tot; j++){
                    a[sz] = a[sz] * i % m;
                }
            }
        }
        mod[sz] = m;
        sz++;
    }
    if( ch ){
        for(int i = 0; i < sz; i++) a[i] = modinverse(a[i], mod[i]);
    }
    return cr(a, mod, sz);
}

ll Cat(ll n, ll m)
{
    N = n, M = m;
    return fact(2*N, M, false) * fact(N, M, true) % M * fact(N+1, M, true) % M;
}

int main()
{
    int N;
    int p, q, M, Q;
    scanf("%d%d%d%d", &p, &q, &M, &Q);
    ll tmp = M;
    for(ll i = 2; i <= tmp; i++){
        if( i*i > tmp ) i = tmp;
        ll m = 1, cnt = 0;
        while( tmp % i == 0 ){
            m *= i; cnt++;
            tmp /= i;
        }
        if( m == 1 ) continue;
        L.push_back(m);
        X.push_back(i);
        CT.push_back(cnt);
    }
    for(int i = 1; i <= Q; i++){
        for(int j = 0; j <100; j++) a[j] = mod[j] = 0;
        int A;
        scanf("%d", &A);
        ll mul = 2, ans = 1, su = A;
        while(su){
            if(su%2) ans = mul * ans % M;
            su /= 2; mul = mul * mul % M;
        }
        if (A&1) printf("%lld\n", ans);
        else printf("%lld\n", (ans - Cat(A/2, M) + M)%M);
    }
    return 0;
}

• Subtask 1: 0 / 38
• Subtask 2: 0 / 35
• Subtask 3: 0 / 40