Submission #22547

#	Time	Username	Problem	Language	Result	Execution time	Memory
22547		추억의 skyseasoft (#40)	Fully Generate (KRIII5_FG)	C++98	2 / 7	500 ms	251116 KiB

FG

#include<stdio.h>
#define M ((ll)1e9 + 7)
typedef long long ll;
ll n,a[32000000];
ll f(ll a, ll b) {
    if(!b) return 1;
    if(b & 1) return f(a,b-1) * a % M;
    ll k = f(a, b>>1);
    return k*k%M;
}
int main() {
    scanf("%lld",&n);
    if(n <= 4) {
        ll r[5] = {0,1,2,4,12};
        printf("%lld", r[n]);
    } else {
        a[1] = 1, a[2] = 2, a[3] = 2;
        ll res = 4, i=3, s=3;
        for(ll j=4;s+a[i]<n;i++) {
            for(ll k=0;j<32000000 && k<a[i];k++) a[j++] = i;
            res = (res * f(i,a[i])) % M;
            s += a[i];
        }
        res = (res * f(i, n-s)) % M;
        printf("%lld", res);
    }
    return 0;
}

Compilation message (stderr)

FG.cpp: In function 'int main()':
FG.cpp:12:21: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
     scanf("%lld",&n);
                     ^

• Subtask 1: 2 / 2
• Subtask 2: 0 / 5