#include "seats.h"
#include <bits/stdc++.h>
using namespace std;
struct T{
int mn,cnt,sum;
}st[4000001];
int n;
vector <int> r,c;
vector <vector <int>> a;
T operator +(T a, T b){
T c;
c.mn=min(a.mn,a.sum+b.mn);
if (a.mn==a.sum+b.mn)
c.cnt=a.cnt+b.cnt;
else if (a.mn<a.sum+b.mn)
c.cnt=a.cnt;
else
c.cnt=b.cnt;
c.sum=a.sum+b.sum;
return c;
}
int cell(int i, int j){
return (i<0||i>=a.size()||j<0||j>=a[0].size()?n:a[i][j]);
}
vector <int> best(int i, int j){
vector <int> v;
for (int k=0;k<2;k++)
for (int l=0;l<2;l++)
v.push_back(cell(i+k,j+l));
sort(v.begin(),v.end());
return v;
}
int calc(int i){
int res=0;
for (int j=0;j<2;j++)
for (int k=0;k<2;k++){
auto v=best(r[i]-j,c[i]-k);
res+=(i==v[0])-(i==v[1])+(i==v[2])-(i==v[3]);
}
return res;
}
void build(int node, int l, int r){
if (l==r){
st[node]={calc(l),1,calc(l)};
return;
}
int mid=(l+r)>>1;
build(node<<1,l,mid);
build(node<<1|1,mid+1,r);
st[node]=st[node<<1]+st[node<<1|1];
}
void update(int node, int l, int r, int i){
if (l>i||r<i||l>r)
return;
if (l==r){
st[node]={calc(i),1,calc(i)};
return;
}
int mid=(l+r)>>1;
update(node<<1,l,mid,i);
update(node<<1|1,mid+1,r,i);
st[node]=st[node<<1]+st[node<<1|1];
}
void give_initial_chart(int H, int W, vector <int> R, vector <int> C){
r=R;
c=C;
n=H*W;
a.resize(H);
for (int i=0;i<H;i++)
a[i].assign(W,0);
for (int i=0;i<n;i++)
a[r[i]][c[i]]=i;
build(1,0,n-1);
}
int swap_seats(int x, int y){
swap(r[x],r[y]);
swap(c[x],c[y]);
swap(a[r[x]][c[x]],a[r[y]][c[y]]);
for (int i=-1;i<2;i++)
for (int j=-1;j<2;j++){
update(1,0,n-1,cell(r[x]+i,c[x]+j));
update(1,0,n-1,cell(r[y]+i,c[y]+j));
}
return st[1].cnt;
}
Compilation message
seats.cpp: In function 'int cell(int, int)':
seats.cpp:23:19: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::vector<int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
23 | return (i<0||i>=a.size()||j<0||j>=a[0].size()?n:a[i][j]);
| ~^~~~~~~~~~
seats.cpp:23:37: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
23 | return (i<0||i>=a.size()||j<0||j>=a[0].size()?n:a[i][j]);
| ~^~~~~~~~~~~~~
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
51 ms |
548 KB |
Output is correct |
2 |
Correct |
67 ms |
596 KB |
Output is correct |
3 |
Correct |
79 ms |
592 KB |
Output is correct |
4 |
Correct |
28 ms |
596 KB |
Output is correct |
5 |
Correct |
31 ms |
1108 KB |
Output is correct |
6 |
Correct |
61 ms |
600 KB |
Output is correct |
7 |
Correct |
68 ms |
560 KB |
Output is correct |
8 |
Correct |
74 ms |
576 KB |
Output is correct |
9 |
Correct |
74 ms |
592 KB |
Output is correct |
10 |
Correct |
73 ms |
852 KB |
Output is correct |
11 |
Correct |
57 ms |
552 KB |
Output is correct |
12 |
Correct |
28 ms |
592 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
51 ms |
548 KB |
Output is correct |
2 |
Correct |
67 ms |
596 KB |
Output is correct |
3 |
Correct |
79 ms |
592 KB |
Output is correct |
4 |
Correct |
28 ms |
596 KB |
Output is correct |
5 |
Correct |
31 ms |
1108 KB |
Output is correct |
6 |
Correct |
61 ms |
600 KB |
Output is correct |
7 |
Correct |
68 ms |
560 KB |
Output is correct |
8 |
Correct |
74 ms |
576 KB |
Output is correct |
9 |
Correct |
74 ms |
592 KB |
Output is correct |
10 |
Correct |
73 ms |
852 KB |
Output is correct |
11 |
Correct |
57 ms |
552 KB |
Output is correct |
12 |
Correct |
28 ms |
592 KB |
Output is correct |
13 |
Correct |
104 ms |
3132 KB |
Output is correct |
14 |
Correct |
108 ms |
3144 KB |
Output is correct |
15 |
Correct |
46 ms |
3420 KB |
Output is correct |
16 |
Correct |
49 ms |
3672 KB |
Output is correct |
17 |
Correct |
72 ms |
3156 KB |
Output is correct |
18 |
Correct |
99 ms |
3152 KB |
Output is correct |
19 |
Correct |
91 ms |
3164 KB |
Output is correct |
20 |
Correct |
68 ms |
3372 KB |
Output is correct |
21 |
Correct |
40 ms |
3152 KB |
Output is correct |
22 |
Correct |
40 ms |
3676 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
1201 ms |
60764 KB |
Output is correct |
2 |
Correct |
1126 ms |
60900 KB |
Output is correct |
3 |
Correct |
1119 ms |
61268 KB |
Output is correct |
4 |
Correct |
1084 ms |
60792 KB |
Output is correct |
5 |
Correct |
1087 ms |
60900 KB |
Output is correct |
6 |
Correct |
1022 ms |
60844 KB |
Output is correct |
7 |
Correct |
1034 ms |
60892 KB |
Output is correct |
8 |
Correct |
1060 ms |
60872 KB |
Output is correct |
9 |
Correct |
1104 ms |
60992 KB |
Output is correct |
10 |
Correct |
1112 ms |
61108 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
112 ms |
3164 KB |
Output is correct |
2 |
Correct |
180 ms |
8120 KB |
Output is correct |
3 |
Correct |
1166 ms |
61032 KB |
Output is correct |
4 |
Correct |
1199 ms |
60916 KB |
Output is correct |
5 |
Correct |
983 ms |
61264 KB |
Output is correct |
6 |
Correct |
1266 ms |
111736 KB |
Output is correct |
7 |
Correct |
1072 ms |
61036 KB |
Output is correct |
8 |
Correct |
1079 ms |
60984 KB |
Output is correct |
9 |
Correct |
1066 ms |
61256 KB |
Output is correct |
10 |
Correct |
1129 ms |
63924 KB |
Output is correct |
11 |
Correct |
1050 ms |
84344 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
221 ms |
1916 KB |
Output is correct |
2 |
Correct |
249 ms |
1768 KB |
Output is correct |
3 |
Correct |
276 ms |
2000 KB |
Output is correct |
4 |
Correct |
289 ms |
1820 KB |
Output is correct |
5 |
Correct |
323 ms |
4672 KB |
Output is correct |
6 |
Correct |
1357 ms |
61640 KB |
Output is correct |
7 |
Correct |
1340 ms |
61476 KB |
Output is correct |
8 |
Correct |
1360 ms |
61484 KB |
Output is correct |
9 |
Correct |
1377 ms |
61324 KB |
Output is correct |
10 |
Correct |
1283 ms |
61732 KB |
Output is correct |
11 |
Correct |
1332 ms |
61520 KB |
Output is correct |
12 |
Correct |
1243 ms |
61724 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
51 ms |
548 KB |
Output is correct |
2 |
Correct |
67 ms |
596 KB |
Output is correct |
3 |
Correct |
79 ms |
592 KB |
Output is correct |
4 |
Correct |
28 ms |
596 KB |
Output is correct |
5 |
Correct |
31 ms |
1108 KB |
Output is correct |
6 |
Correct |
61 ms |
600 KB |
Output is correct |
7 |
Correct |
68 ms |
560 KB |
Output is correct |
8 |
Correct |
74 ms |
576 KB |
Output is correct |
9 |
Correct |
74 ms |
592 KB |
Output is correct |
10 |
Correct |
73 ms |
852 KB |
Output is correct |
11 |
Correct |
57 ms |
552 KB |
Output is correct |
12 |
Correct |
28 ms |
592 KB |
Output is correct |
13 |
Correct |
104 ms |
3132 KB |
Output is correct |
14 |
Correct |
108 ms |
3144 KB |
Output is correct |
15 |
Correct |
46 ms |
3420 KB |
Output is correct |
16 |
Correct |
49 ms |
3672 KB |
Output is correct |
17 |
Correct |
72 ms |
3156 KB |
Output is correct |
18 |
Correct |
99 ms |
3152 KB |
Output is correct |
19 |
Correct |
91 ms |
3164 KB |
Output is correct |
20 |
Correct |
68 ms |
3372 KB |
Output is correct |
21 |
Correct |
40 ms |
3152 KB |
Output is correct |
22 |
Correct |
40 ms |
3676 KB |
Output is correct |
23 |
Correct |
1201 ms |
60764 KB |
Output is correct |
24 |
Correct |
1126 ms |
60900 KB |
Output is correct |
25 |
Correct |
1119 ms |
61268 KB |
Output is correct |
26 |
Correct |
1084 ms |
60792 KB |
Output is correct |
27 |
Correct |
1087 ms |
60900 KB |
Output is correct |
28 |
Correct |
1022 ms |
60844 KB |
Output is correct |
29 |
Correct |
1034 ms |
60892 KB |
Output is correct |
30 |
Correct |
1060 ms |
60872 KB |
Output is correct |
31 |
Correct |
1104 ms |
60992 KB |
Output is correct |
32 |
Correct |
1112 ms |
61108 KB |
Output is correct |
33 |
Correct |
112 ms |
3164 KB |
Output is correct |
34 |
Correct |
180 ms |
8120 KB |
Output is correct |
35 |
Correct |
1166 ms |
61032 KB |
Output is correct |
36 |
Correct |
1199 ms |
60916 KB |
Output is correct |
37 |
Correct |
983 ms |
61264 KB |
Output is correct |
38 |
Correct |
1266 ms |
111736 KB |
Output is correct |
39 |
Correct |
1072 ms |
61036 KB |
Output is correct |
40 |
Correct |
1079 ms |
60984 KB |
Output is correct |
41 |
Correct |
1066 ms |
61256 KB |
Output is correct |
42 |
Correct |
1129 ms |
63924 KB |
Output is correct |
43 |
Correct |
1050 ms |
84344 KB |
Output is correct |
44 |
Correct |
221 ms |
1916 KB |
Output is correct |
45 |
Correct |
249 ms |
1768 KB |
Output is correct |
46 |
Correct |
276 ms |
2000 KB |
Output is correct |
47 |
Correct |
289 ms |
1820 KB |
Output is correct |
48 |
Correct |
323 ms |
4672 KB |
Output is correct |
49 |
Correct |
1357 ms |
61640 KB |
Output is correct |
50 |
Correct |
1340 ms |
61476 KB |
Output is correct |
51 |
Correct |
1360 ms |
61484 KB |
Output is correct |
52 |
Correct |
1377 ms |
61324 KB |
Output is correct |
53 |
Correct |
1283 ms |
61732 KB |
Output is correct |
54 |
Correct |
1332 ms |
61520 KB |
Output is correct |
55 |
Correct |
1243 ms |
61724 KB |
Output is correct |
56 |
Correct |
494 ms |
1996 KB |
Output is correct |
57 |
Correct |
786 ms |
1864 KB |
Output is correct |
58 |
Correct |
933 ms |
4644 KB |
Output is correct |
59 |
Correct |
2043 ms |
53560 KB |
Output is correct |
60 |
Correct |
2349 ms |
52992 KB |
Output is correct |
61 |
Correct |
1990 ms |
52932 KB |
Output is correct |
62 |
Correct |
1605 ms |
53060 KB |
Output is correct |
63 |
Correct |
2106 ms |
53028 KB |
Output is correct |
64 |
Correct |
2088 ms |
53040 KB |
Output is correct |
65 |
Correct |
1974 ms |
53480 KB |
Output is correct |
66 |
Correct |
2267 ms |
53672 KB |
Output is correct |
67 |
Correct |
2005 ms |
55992 KB |
Output is correct |
68 |
Correct |
1771 ms |
67380 KB |
Output is correct |
69 |
Correct |
2085 ms |
76512 KB |
Output is correct |