Submission #687702

#	TimeUTC-0	Username	Problem	Language	Result	Execution time	Memory
687702	2023-01-26 21:24:45	divad	The grade (info1cup18_thegrade)	C++14	100 / 100	50 ms	3324 KiB

thegrade

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#include <bits/stdc++.h>
#define int long long
#define NMAX 1000002
#define FMAX 100002
#define MOD  1000000007
using namespace std;
int fr[NMAX],fact[FMAX],invfact[FMAX],nrperm;
int q,p,t,x,n,sum;
int lgput(int n, int a){
    if(a == 0){
        return 1;
    }else{
        if(a%2 == 0){
            int val = lgput(n, a/2);
            return (val*val)%MOD;
        }else{
            return (n*lgput(n, a-1))%MOD;
        }
    }
}
int comb(int n, int m){
    return ((fact[n]*invfact[m])%MOD*invfact[n-m])%MOD;
}
int stars_and_bars(int n, int k){
    return comb(n+k-1, k-1);
}
 
 
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• Subtask 1: 10 / 10
• Subtask 2: 10 / 10
• Subtask 3: 10 / 10
• Subtask 4: 20 / 20
• Subtask 5: 15 / 15
• Subtask 6: 15 / 15
• Subtask 7: 20 / 20