Submission #19637

#	TimeUTC-0	Username	Problem	Language	Result	Execution time	Memory
19637	2016-02-25 03:00:36	javelinsman	Ω (kriii4_P3)	C++14	100 / 100	0 ms	1724 KiB

P3

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#include<iostream>
#include<algorithm>
using namespace std;
typedef long long ll;
const ll MOD = 1e9+7;
ll C[111], X[111];
ll go(ll x,ll y){
    x%=MOD;
    if(y==0) return 1;
    if(y==1) return x;
    if(y%2) return go(x,y-1)*x%MOD;
    ll h = go(x,y/2);
    return h*h%MOD;
}
ll l_minus(ll x,ll y){
    return (x-y+MOD)%MOD;
}
ll l_mult(ll x,ll y){
    return x*y%MOD;
}
ll l_div(ll x,ll y){
    return l_mult(x,go(y,MOD-2));
}
 
 
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• Subtask 1: 100 / 100