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QOJ
ID | 题目 | 提交者 | 结果 | 用时 | 内存 | 语言 | 文件大小 | 提交时间 | 测评时间 |
---|---|---|---|---|---|---|---|---|---|
#266615 | #7753. Energy Distribution | qkm66666# | WA | 982ms | 4200kb | C++17 | 2.1kb | 2023-11-26 15:54:37 | 2023-11-26 15:54:38 |
Judging History
answer
#include<algorithm>
#include<iostream>
#include<cstdlib>
#include<cstring>
#include<cassert>
#include<cstdio>
#include<cctype>
#include<vector>
#include<bitset>
#include<random>
#include<ctime>
#include<queue>
#include<cmath>
#include<list>
#include<map>
#include<set>
#define pb push_back
#define mp make_pair
#define pii pair<int,int>
#define pll pair<long long,long long>
#define FF fflush(stdout)
#define inf 0x3f3f3f3f
#define endl "\n"
#define fi first
#define se second
typedef long long ll;
typedef unsigned long long ull;
using namespace std;
//char buf[1<<20],*p1,*p2;
//#define getchar() (p1==p2&&(p2=(p1=buf)+fread(buf,1,1<<20,stdin),p1==p2)?EOF:*p1++)
inline int read()
{
int s=0,f=1;
char x=getchar();
while(!isdigit(x))f=(x=='-'?-1:1),x=getchar();
while(isdigit(x))s=s*10+x-'0',x=getchar();
return s*f;
}
const int p=1e9+7;
//ll ksm(int a,int b){ll ans=1,bs=a;while(b){if(b&1)ans=ans*bs%p;bs=bs*bs%p;b>>=1;}return ans;}
mt19937 rd(time(0));
#define reaD read
int w[13][13];
double e[13];
double ee[13];
int n;
double cal()
{
double s=0;
for(int i=1;i<=n;i++)
s+=fabs(e[i]);
for(int i=1;i<=n;i++)
ee[i]=1.0*fabs(e[i])/s;
double ans=0;
for(int i=1;i<=n;i++)
for(int j=i+1;j<=n;j++)
ans+=w[i][j]*ee[i]*ee[j];
// assert(ans<100000);
return ans;
}
double SA()
{
double t=1000;
double dt=0.997;
double ans=0;
while(t>1e-5)
{
int x=rd()%n+1;
double del=(rd()%2?-1:1)*1;
e[x]+=del;
double tmp=cal();
if(tmp>=ans)
{
ans=tmp;
}
else if(exp((tmp-ans)/t)*RAND_MAX<=rand())
{
e[x]-=del;
}
if(t>1)t*=dt;
else
t*=dt;
}
return ans;
}
int main()
{
n=read();
for(int i=1;i<=n;i++)
for(int j=1;j<=n;j++)
w[i][j]=read();
double ans=0;
for(int i=1;i<=2000;i++)
{
for(int i=1;i<=n;i++)
e[i]=1;
ans=max(ans,SA());
}
printf("%.8lf",ans);
// system("pause");
return 0;
}
詳細信息
Test #1:
score: 100
Accepted
time: 464ms
memory: 4100kb
input:
2 0 1 1 0
output:
0.25000000
result:
ok found '0.2500000', expected '0.2500000', error '0.0000000'
Test #2:
score: 0
Accepted
time: 474ms
memory: 4112kb
input:
3 0 2 1 2 0 2 1 2 0
output:
0.57142857
result:
ok found '0.5714286', expected '0.5714290', error '0.0000004'
Test #3:
score: 0
Accepted
time: 471ms
memory: 4116kb
input:
3 0 1 2 1 0 1 2 1 0
output:
0.50000000
result:
ok found '0.5000000', expected '0.5000000', error '0.0000000'
Test #4:
score: 0
Accepted
time: 626ms
memory: 4180kb
input:
4 0 3 1 0 3 0 1 0 1 1 0 2 0 0 2 0
output:
0.75000000
result:
ok found '0.7500000', expected '0.7500000', error '0.0000000'
Test #5:
score: 0
Accepted
time: 727ms
memory: 4044kb
input:
5 0 0 0 4 4 0 0 2 0 4 0 2 0 2 0 4 0 2 0 0 4 4 0 0 0
output:
1.00000000
result:
ok found '1.0000000', expected '1.0000000', error '0.0000000'
Test #6:
score: 0
Accepted
time: 757ms
memory: 4116kb
input:
6 0 9 5 5 10 6 9 0 0 0 0 1 5 0 0 0 3 0 5 0 0 0 10 5 10 0 3 10 0 0 6 1 0 5 0 0
output:
2.85714286
result:
ok found '2.8571429', expected '2.8571430', error '0.0000000'
Test #7:
score: 0
Accepted
time: 802ms
memory: 4168kb
input:
7 0 0 0 0 50 10 45 0 0 0 0 0 3 1 0 0 0 0 0 4 16 0 0 0 0 44 0 0 50 0 0 44 0 37 6 10 3 4 0 37 0 2 45 1 16 0 6 2 0
output:
12.51157310
result:
ok found '12.5115731', expected '12.5115850', error '0.0000010'
Test #8:
score: 0
Accepted
time: 871ms
memory: 4132kb
input:
8 0 0 56 0 0 58 16 0 0 0 37 20 0 82 0 0 56 37 0 0 98 0 83 0 0 20 0 0 0 0 100 0 0 0 98 0 0 62 29 0 58 82 0 0 62 0 43 0 16 0 83 100 29 43 0 4 0 0 0 0 0 0 4 0
output:
25.00911593
result:
ok found '25.0091159', expected '25.0091180', error '0.0000001'
Test #9:
score: 0
Accepted
time: 937ms
memory: 4116kb
input:
9 0 0 0 135 0 0 0 448 476 0 0 0 0 0 0 208 17 0 0 0 0 467 1 0 0 0 134 135 0 467 0 0 0 92 369 207 0 0 1 0 0 176 0 235 0 0 0 0 0 176 0 65 363 413 0 208 0 92 0 65 0 0 0 448 17 0 369 235 363 0 0 0 476 0 134 207 0 413 0 0 0
output:
119.00000000
result:
ok found '119.0000000', expected '119.0000000', error '0.0000000'
Test #10:
score: 0
Accepted
time: 982ms
memory: 4200kb
input:
10 0 0 0 289 0 397 0 0 140 155 0 0 28 101 35 614 0 0 545 300 0 28 0 0 329 702 0 242 0 298 289 101 0 0 0 0 0 0 720 0 0 35 329 0 0 0 0 38 0 0 397 614 702 0 0 0 229 0 0 0 0 0 0 0 0 229 0 317 0 0 0 0 242 0 38 0 317 0 961 309 140 545 0 720 0 0 0 961 0 92 155 300 298 0 0 0 0 309 92 0
output:
240.25000000
result:
ok found '240.2500000', expected '240.2500000', error '0.0000000'
Test #11:
score: -100
Wrong Answer
time: 982ms
memory: 4124kb
input:
10 0 295 2 809 333 880 284 305 41 295 295 0 512 1000 281 153 42 550 962 930 2 512 0 727 709 969 665 973 301 410 809 1000 727 0 282 551 960 804 274 956 333 281 709 282 0 613 505 406 896 441 880 153 969 551 613 0 769 770 40 288 284 42 665 960 505 769 0 919 989 490 305 550 973 804 406 770 919 0 400 209...
output:
327.37146614
result:
wrong answer 1st numbers differ - expected: '327.3736590', found: '327.3714661', error = '0.0000067'