Submission #22383

#	Time	Username	Problem	Language	Result	Execution time	Memory
22383		예제는 나오는데 왜 틀리죠?? (#40)	Fully Generate (KRIII5_FG)	C++14	0 / 7	406 ms	1048576 KiB

FG

// =====================================================================================
// 
//       Filename:  fg.cpp
//        Created:  2017년 04월 30일 12시 39분 09초
//       Compiler:  g++ -O2 -std=c++14
//         Author:  baactree ,  [email protected]
//        Company:  Chonnam National University
// 
// =====================================================================================

#include <bits/stdc++.h>
using namespace std;
const int mod=1000000007;
typedef long long ll;
ll _pow(ll a, ll b){
	if(b==0)
		return 1;
	ll temp=_pow(a, b/2);
	temp=(temp*temp)%mod;
	if(b&1)
		return (temp*a)%mod;
	return temp;
}
int main(){
	int cnt=1;
	int idx=1;
	vector<int> arr;
	arr.push_back(0);
	arr.push_back(1);
	arr.push_back(2);
	arr.push_back(2);
	for(int i=3;i<60000;i++){
		for(int j=0;j<arr[i];j++)
			arr.push_back(i);
	}
	vector<long long> sum;
	sum.push_back(0);
	for(int i=1;i<arr.size();i++)
		sum.push_back(sum[i-1]+arr[i]);
	long long n;
	scanf("%lld", &n);
	int k;
	for(int i=0;i<sum.size();i++){
		if(sum[i]>n){
			k=i;
			break;
		}
	}
	ll ans=1;
	for(int i=1;i<k;i++){
		ans=(ans*_pow(i, arr[i]))%mod;
		n-=arr[i];
	}
	ans=(ans*_pow(k, n))%mod;
	printf("%lld\n", ans);
	return 0;
}

Compilation message (stderr)

FG.cpp: In function 'int main()':
FG.cpp:38:15: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
  for(int i=1;i<arr.size();i++)
               ^
FG.cpp:43:15: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
  for(int i=0;i<sum.size();i++){
               ^
FG.cpp:25:6: warning: unused variable 'cnt' [-Wunused-variable]
  int cnt=1;
      ^
FG.cpp:26:6: warning: unused variable 'idx' [-Wunused-variable]
  int idx=1;
      ^
FG.cpp:41:19: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
  scanf("%lld", &n);
                   ^
FG.cpp:50:15: warning: 'k' may be used uninitialized in this function [-Wmaybe-uninitialized]
  for(int i=1;i<k;i++){
               ^

• Subtask 1: 0 / 2
• Subtask 2: 0 / 5