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IDProblemSubmitterResultTimeMemoryLanguageFile sizeSubmit timeJudge time
#602565#8723. 乘二Kanate#WA 33ms6680kbC++141.5kb2024-10-01 10:47:292024-10-01 10:47:30

Judging History

你现在查看的是最新测评结果

  • [2024-10-01 10:47:30]
  • 评测
  • 测评结果:WA
  • 用时:33ms
  • 内存:6680kb
  • [2024-10-01 10:47:29]
  • 提交

answer

#include<bits/stdc++.h>
using namespace std;
typedef long long ll;
const int N = 2e5 + 7;
const int mod = 1e9 + 7;

ll ans ; 
int n , k ;
struct node {
	ll a , c;
}t[N];

ll qpow(ll a,ll b){
	ll ans = 1;
	for(;b;b>>=1,a=a*a%mod) if(b&1)ans = ans * a %mod;
	return ans;
}

bool cmp(node a,node b){
	if(a.c !=b.c)return a.c < b.c;
	return a.a< b.a;
}

int main(){
	
	ios::sync_with_stdio(false);
	cin.tie(0);
	cout.tie(0);
	cin >> n >> k;
	for(int i=1;i<=n;i++) {
		cin >> t[i].a;ll w  = t[i].a;
		ans += w;
		ans %= mod;
		while(w){
			t[i].c++;
			w/=2;
		}
		t[i].c -- ;
	//	cout << i << " " << t[i].c << endl;
	}
	
	sort(t+1,t+n+1,cmp);
	ll sum = 0 ;
	
	for(int i=1;i<=n;i++){
		while(t[i].c < t[i+1].c){
			if(k <= i){
				for(int j=1;j<=k;j++){
				//	cout << j << " " << t[j].a << endl;
					ans = (ans + t[j].a) %mod;
					t[j].a = (t[j].a + t[j].a);
					
					t[j].c++;
				}
				cout << ans ;
				return 0;
			}
			else 
			for(int j=1;j<=i;j++){
				//	cout << t[j].a << endl;
					ans = (ans + t[j].a) %mod;
					t[j].a = (t[j].a + t[j].a) ;
					t[j].c++;
					k -- ;
				}
		}
	}
//	cout << k << " "  << ans << endl;
	sort(t+1,t+n+1,cmp);
	for(int i=1;i<=n;i++) t[i].a %= mod ;
	
	ll w = k / n; k = k % n;
//	cout << qpow(2,w) << endl;
	ans = ans * qpow(2,w)  % mod;
	ll pw = qpow(2,w);
	for(int j=1;j<=k;j++){
		t[j].a = t[j].a * pw %mod;
		ans = (ans + t[j].a ) %mod; 
	}
	cout << ans;
	return 0;
} 

Details

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Test #1:

score: 100
Accepted
time: 0ms
memory: 3556kb

input:

3 3
7 2 1

output:

15

result:

ok 1 number(s): "15"

Test #2:

score: -100
Wrong Answer
time: 33ms
memory: 6680kb

input:

200000 1605067
366760624 67854 93901 693975 27016 1046 10808 6533158 54778 500941023 77236442 32173 10431454 2 9726 1553148 89282 411182309 494073 131299543 249904771 7906930 353 9909 3632698 29156 1917186 303 737 1189004 22 1983 263 711 4106258 2070 36704 12524642 5192 123 2061 22887 66 380 1 10153...

output:

609616159

result:

wrong answer 1st numbers differ - expected: '707034173', found: '609616159'