QOJ.ac
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 |
---|---|---|---|---|---|---|---|---|---|
#432610 | #8774. Manhattan Walk | ideograph_advantage# | AC ✓ | 18ms | 11256kb | C++20 | 1.5kb | 2024-06-07 13:52:46 | 2024-06-07 13:52:48 |
Judging History
answer
#include <bits/stdc++.h>
using namespace std;
#define iter(v) v.begin(), v.end()
#define SZ(v) int(v.size())
#define pb emplace_back
#define ff first
#define ss second
using ll = long long;
using pii = pair<int, int>;
using pll = pair<ll, ll>;
#ifdef zisk
void debug(){cerr << "\n";}
template<class T, class ... U>
void debug(T a, U ... b){ cerr << a << " ", debug(b...); }
template<class T> void pary(T l, T r){
while(l != r) cerr << *l << " ", l++;
cerr << "\n";
}
#else
#define debug(...) void()
#define pary(...) void()
#endif
template<class A, class B>
ostream& operator<<(ostream& o, pair<A, B> p){
return o << '(' << p.ff << ',' << p.ss << ')';
}
int main(){
ios_base::sync_with_stdio(false);
cin.tie(0);
int r,c;
double p;
cin >> r >> c >> p;
vector<vector<double> > dp(r,vector<double>(c));
for(int i=r-1;i>=0;i--){
for(int j=c-1;j>=0;j--){
if(i==r-1 && j==c-1){
continue;
}
if(i==r-1){
dp[i][j]=dp[i][j+1]+p/4;
}
else if(j==c-1){
dp[i][j]=dp[i+1][j]+p/4;
}
else{
if(dp[i][j+1]<=dp[i+1][j]){
dp[i][j]+=dp[i][j+1]/2;
double u=dp[i+1][j]-dp[i][j+1];
u=min(u,p);
dp[i][j]+=(p-u)/p*dp[i+1][j]/2;
dp[i][j]+=u/p/2*(dp[i][j+1]+u/2);
}
else{
dp[i][j]+=dp[i+1][j]/2;
double u=dp[i][j+1]-dp[i+1][j];
u=min(u,p);
dp[i][j]+=(p-u)/p*dp[i][j+1]/2;
dp[i][j]+=u/p/2*(dp[i+1][j]+u/2);
}
//debug(i,j,dp[i][j]);
}
}
}
for(int i=0;i<r;i++){
//pary(iter(dp[i]));
}
cout << fixed << setprecision(12) << dp[0][0] << "\n";
}
詳細信息
Test #1:
score: 100
Accepted
time: 1ms
memory: 3864kb
input:
2 3 8
output:
2.875000000000
result:
ok found '2.8750000', expected '2.8750000', error '0.0000000'
Test #2:
score: 0
Accepted
time: 0ms
memory: 3940kb
input:
5 5 5
output:
2.432233868874
result:
ok found '2.4322339', expected '2.4322339', error '0.0000000'
Test #3:
score: 0
Accepted
time: 0ms
memory: 3868kb
input:
1 1 1
output:
0.000000000000
result:
ok found '0.0000000', expected '0.0000000', error '-0.0000000'
Test #4:
score: 0
Accepted
time: 18ms
memory: 11092kb
input:
1000 1000 1000000000
output:
1782317138.808377265930
result:
ok found '1782317138.8083773', expected '1782317138.8083761', error '0.0000000'
Test #5:
score: 0
Accepted
time: 0ms
memory: 3836kb
input:
1 4 5
output:
3.750000000000
result:
ok found '3.7500000', expected '3.7500000', error '0.0000000'
Test #6:
score: 0
Accepted
time: 0ms
memory: 3792kb
input:
4 1 5
output:
3.750000000000
result:
ok found '3.7500000', expected '3.7500000', error '0.0000000'
Test #7:
score: 0
Accepted
time: 1ms
memory: 4028kb
input:
1 1 1000000000
output:
0.000000000000
result:
ok found '0.0000000', expected '0.0000000', error '-0.0000000'
Test #8:
score: 0
Accepted
time: 1ms
memory: 4028kb
input:
1 2 1000000000
output:
250000000.000000000000
result:
ok found '250000000.0000000', expected '250000000.0000000', error '0.0000000'
Test #9:
score: 0
Accepted
time: 0ms
memory: 4024kb
input:
2 1 1000000000
output:
250000000.000000000000
result:
ok found '250000000.0000000', expected '250000000.0000000', error '0.0000000'
Test #10:
score: 0
Accepted
time: 0ms
memory: 3796kb
input:
1 2 1
output:
0.250000000000
result:
ok found '0.2500000', expected '0.2500000', error '0.0000000'
Test #11:
score: 0
Accepted
time: 0ms
memory: 3780kb
input:
2 1 1
output:
0.250000000000
result:
ok found '0.2500000', expected '0.2500000', error '0.0000000'
Test #12:
score: 0
Accepted
time: 1ms
memory: 3864kb
input:
1 10 3
output:
6.750000000000
result:
ok found '6.7500000', expected '6.7500000', error '0.0000000'
Test #13:
score: 0
Accepted
time: 0ms
memory: 3924kb
input:
10 1 3
output:
6.750000000000
result:
ok found '6.7500000', expected '6.7500000', error '0.0000000'
Test #14:
score: 0
Accepted
time: 13ms
memory: 11256kb
input:
997 993 998244353
output:
1779941051.346163034439
result:
ok found '1779941051.3461630', expected '1779941051.3461628', error '0.0000000'
Test #15:
score: 0
Accepted
time: 6ms
memory: 5868kb
input:
988 313 886183312
output:
78753022570.483352661133
result:
ok found '78753022570.4833527', expected '78753022570.4833527', error '0.0000000'
Test #16:
score: 0
Accepted
time: 3ms
memory: 4588kb
input:
583 286 322190846
output:
8636356976.843713760376
result:
ok found '8636356976.8437138', expected '8636356976.8437138', error '0.0000000'
Test #17:
score: 0
Accepted
time: 8ms
memory: 6696kb
input:
892 468 494964816
output:
17125998682.729249954224
result:
ok found '17125998682.7292500', expected '17125998682.7292328', error '0.0000000'
Test #18:
score: 0
Accepted
time: 1ms
memory: 4032kb
input:
26 882 386682745
output:
78231677700.750396728516
result:
ok found '78231677700.7503967', expected '78231677700.7504883', error '0.0000000'
Test #19:
score: 0
Accepted
time: 10ms
memory: 9560kb
input:
867 926 422131798
output:
945100500.399106740952
result:
ok found '945100500.3991067', expected '945100500.3991071', error '0.0000000'
Test #20:
score: 0
Accepted
time: 0ms
memory: 3884kb
input:
37 68 19
output:
62.284459880159
result:
ok found '62.2844599', expected '62.2844599', error '0.0000000'
Test #21:
score: 0
Accepted
time: 0ms
memory: 3828kb
input:
23 90 80
output:
860.050698735791
result:
ok found '860.0506987', expected '860.0506987', error '0.0000000'
Test #22:
score: 0
Accepted
time: 0ms
memory: 3804kb
input:
43 55 85
output:
118.389267967564
result:
ok found '118.3892680', expected '118.3892680', error '0.0000000'
Test #23:
score: 0
Accepted
time: 0ms
memory: 3916kb
input:
93 66 43
output:
97.904840858751
result:
ok found '97.9048409', expected '97.9048409', error '0.0000000'
Test #24:
score: 0
Accepted
time: 1ms
memory: 3956kb
input:
78 93 30
output:
44.845452326451
result:
ok found '44.8454523', expected '44.8454523', error '0.0000000'
Test #25:
score: 0
Accepted
time: 0ms
memory: 3864kb
input:
9 5 481032867
output:
400507342.366738259792
result:
ok found '400507342.3667383', expected '400507342.3667384', error '0.0000000'
Test #26:
score: 0
Accepted
time: 1ms
memory: 3916kb
input:
366 73 3
output:
149.486464233096
result:
ok found '149.4864642', expected '149.4864642', error '0.0000000'
Test #27:
score: 0
Accepted
time: 0ms
memory: 3900kb
input:
6 4 5
output:
2.894645169729
result:
ok found '2.8946452', expected '2.8946452', error '0.0000000'
Test #28:
score: 0
Accepted
time: 0ms
memory: 3900kb
input:
8 10 5
output:
3.397360852475
result:
ok found '3.3973609', expected '3.3973609', error '0.0000000'
Test #29:
score: 0
Accepted
time: 0ms
memory: 4012kb
input:
10 1 7
output:
15.750000000000
result:
ok found '15.7500000', expected '15.7500000', error '0.0000000'
Test #30:
score: 0
Accepted
time: 0ms
memory: 3792kb
input:
10 7 10
output:
7.371646607394
result:
ok found '7.3716466', expected '7.3716466', error '0.0000000'
Test #31:
score: 0
Accepted
time: 0ms
memory: 3788kb
input:
2 8 1
output:
1.327106919466
result:
ok found '1.3271069', expected '1.3271069', error '0.0000000'