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Submission #610724

# Submission time Handle Problem Language Result Execution time Memory
610724 2022-07-28T12:49:00 Z alirezasamimi100 Seats (IOI18_seats) C++17
100 / 100
 3639 ms 110736 KB 
#include "seats.h"
#include <bits/stdc++.h>
using namespace std;
using pii = pair<int,int>;
#define pb push_back
#define F first
#define S second
#define lc v<<1
#define rc v<<1|1

const int N = 1e6 + 10, inf = 1.05e9;

int n,m,lz[N*4],dx[]={0,0,1,1},dy[]={0,1,1,0},s;
pii f[N*4];
vector<int> A[N],r,c;

void build(int v, int l, int r){
    f[v].S=r-l;
    if(r-l==1) return;
    int m=(l+r)>>1;
    build(lc,l,m);
    build(rc,m,r);
}

void shift(int v, int l, int r){
    f[v].F+=lz[v];
    if(r-l>1){
        lz[lc]+=lz[v];
        lz[rc]+=lz[v];
    }
    lz[v]=0;
}

void upd(int v, int l, int r, int tl, int tr, int x){
    shift(v,l,r);
    if(l>=tr || tl>=r || tl>=tr) return;
    if(l>=tl && r<=tr){
        lz[v]=x;
        return shift(v,l,r);
    }
    int m=(l+r)>>1;
    upd(lc,l,m,tl,tr,x);
    upd(rc,m,r,tl,tr,x);
    f[v].F=min(f[lc].F,f[rc].F);
    f[v].S=0;
    if(f[v].F==f[lc].F) f[v].S+=f[lc].S;
    if(f[v].F==f[rc].F) f[v].S+=f[rc].S;
}

void calc(int x, int y, int k){
    vector<int> vec;
    for(int i=0; i<4; i++){
        vec.pb(A[x+dx[i]][y+dy[i]]);
    }
    sort(vec.begin(),vec.end());
    upd(1,0,s,vec[0],vec[1],k);
    upd(1,0,s,vec[2],vec[3],k);
}

void give_initial_chart(int H, int W, vector<int> R, vector<int> C) {
    n=H;
    m=W;
    r=R;
    c=C;
    s=n*m;
    build(1,0,s);
    for(int i=0; i<=n+1; i++) A[i].resize(m+2,inf);
    for(int i=0; i<s; i++){
        r[i]++;
        c[i]++;
        A[r[i]][c[i]]=i;
    }
    for(int i=0; i<=n; i++) for(int j=0; j<=m; j++) calc(i,j,1);
}

int swap_seats(int a, int b) {
    for(int i=0; i<4; i++){
        calc(r[a]-dx[i],c[a]-dy[i],-1);
        calc(r[b]-dx[i],c[b]-dy[i],-1);
    }
    swap(A[r[a]][c[a]],A[r[b]][c[b]]);
    swap(r[a],r[b]);
    swap(c[a],c[b]);
    for(int i=0; i<4; i++){
        calc(r[a]-dx[i],c[a]-dy[i],1);
        calc(r[b]-dx[i],c[b]-dy[i],1);
    }
    return f[1].S;
}

Subtask #1
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 32 ms 23892 KB Output is correct
2 Correct 38 ms 23892 KB Output is correct
3 Correct 54 ms 23944 KB Output is correct
4 Correct 40 ms 23916 KB Output is correct
5 Correct 36 ms 24064 KB Output is correct
6 Correct 48 ms 23924 KB Output is correct
7 Correct 51 ms 23904 KB Output is correct
8 Correct 44 ms 23916 KB Output is correct
9 Correct 46 ms 23920 KB Output is correct
10 Correct 50 ms 23916 KB Output is correct
11 Correct 46 ms 24044 KB Output is correct
12 Correct 43 ms 23976 KB Output is correct

Subtask #2
6.0 / 6.0

# Verdict Execution time Memory Grader output
1 Correct 32 ms 23892 KB Output is correct
2 Correct 38 ms 23892 KB Output is correct
3 Correct 54 ms 23944 KB Output is correct
4 Correct 40 ms 23916 KB Output is correct
5 Correct 36 ms 24064 KB Output is correct
6 Correct 48 ms 23924 KB Output is correct
7 Correct 51 ms 23904 KB Output is correct
8 Correct 44 ms 23916 KB Output is correct
9 Correct 46 ms 23920 KB Output is correct
10 Correct 50 ms 23916 KB Output is correct
11 Correct 46 ms 24044 KB Output is correct
12 Correct 43 ms 23976 KB Output is correct
13 Correct 105 ms 24664 KB Output is correct
14 Correct 112 ms 24576 KB Output is correct
15 Correct 73 ms 24788 KB Output is correct
16 Correct 57 ms 24892 KB Output is correct
17 Correct 79 ms 24660 KB Output is correct
18 Correct 79 ms 24660 KB Output is correct
19 Correct 70 ms 24692 KB Output is correct
20 Correct 64 ms 24804 KB Output is correct
21 Correct 63 ms 24660 KB Output is correct
22 Correct 56 ms 24952 KB Output is correct

Subtask #3
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 2194 ms 78344 KB Output is correct
2 Correct 1186 ms 78020 KB Output is correct
3 Correct 1076 ms 77900 KB Output is correct
4 Correct 1072 ms 77832 KB Output is correct
5 Correct 1078 ms 77976 KB Output is correct
6 Correct 1016 ms 77792 KB Output is correct
7 Correct 1108 ms 77972 KB Output is correct
8 Correct 1169 ms 78116 KB Output is correct
9 Correct 1107 ms 77916 KB Output is correct
10 Correct 1122 ms 77948 KB Output is correct

Subtask #4
6.0 / 6.0

# Verdict Execution time Memory Grader output
1 Correct 101 ms 24664 KB Output is correct
2 Correct 197 ms 30688 KB Output is correct
3 Correct 1124 ms 78476 KB Output is correct
4 Correct 2190 ms 78520 KB Output is correct
5 Correct 1122 ms 86296 KB Output is correct
6 Correct 2491 ms 110736 KB Output is correct
7 Correct 1100 ms 85956 KB Output is correct
8 Correct 1178 ms 83412 KB Output is correct
9 Correct 1182 ms 83488 KB Output is correct
10 Correct 1175 ms 85612 KB Output is correct
11 Correct 1120 ms 95268 KB Output is correct

Subtask #5
33.0 / 33.0

# Verdict Execution time Memory Grader output
1 Correct 141 ms 25416 KB Output is correct
2 Correct 175 ms 25616 KB Output is correct
3 Correct 228 ms 25532 KB Output is correct
4 Correct 327 ms 25528 KB Output is correct
5 Correct 457 ms 26324 KB Output is correct
6 Correct 1730 ms 90036 KB Output is correct
7 Correct 1926 ms 87756 KB Output is correct
8 Correct 1602 ms 87744 KB Output is correct
9 Correct 2940 ms 87676 KB Output is correct
10 Correct 1602 ms 87676 KB Output is correct
11 Correct 1499 ms 100724 KB Output is correct
12 Correct 1508 ms 100684 KB Output is correct

Subtask #6
30.0 / 30.0

# Verdict Execution time Memory Grader output
1 Correct 32 ms 23892 KB Output is correct
2 Correct 38 ms 23892 KB Output is correct
3 Correct 54 ms 23944 KB Output is correct
4 Correct 40 ms 23916 KB Output is correct
5 Correct 36 ms 24064 KB Output is correct
6 Correct 48 ms 23924 KB Output is correct
7 Correct 51 ms 23904 KB Output is correct
8 Correct 44 ms 23916 KB Output is correct
9 Correct 46 ms 23920 KB Output is correct
10 Correct 50 ms 23916 KB Output is correct
11 Correct 46 ms 24044 KB Output is correct
12 Correct 43 ms 23976 KB Output is correct
13 Correct 105 ms 24664 KB Output is correct
14 Correct 112 ms 24576 KB Output is correct
15 Correct 73 ms 24788 KB Output is correct
16 Correct 57 ms 24892 KB Output is correct
17 Correct 79 ms 24660 KB Output is correct
18 Correct 79 ms 24660 KB Output is correct
19 Correct 70 ms 24692 KB Output is correct
20 Correct 64 ms 24804 KB Output is correct
21 Correct 63 ms 24660 KB Output is correct
22 Correct 56 ms 24952 KB Output is correct
23 Correct 2194 ms 78344 KB Output is correct
24 Correct 1186 ms 78020 KB Output is correct
25 Correct 1076 ms 77900 KB Output is correct
26 Correct 1072 ms 77832 KB Output is correct
27 Correct 1078 ms 77976 KB Output is correct
28 Correct 1016 ms 77792 KB Output is correct
29 Correct 1108 ms 77972 KB Output is correct
30 Correct 1169 ms 78116 KB Output is correct
31 Correct 1107 ms 77916 KB Output is correct
32 Correct 1122 ms 77948 KB Output is correct
33 Correct 101 ms 24664 KB Output is correct
34 Correct 197 ms 30688 KB Output is correct
35 Correct 1124 ms 78476 KB Output is correct
36 Correct 2190 ms 78520 KB Output is correct
37 Correct 1122 ms 86296 KB Output is correct
38 Correct 2491 ms 110736 KB Output is correct
39 Correct 1100 ms 85956 KB Output is correct
40 Correct 1178 ms 83412 KB Output is correct
41 Correct 1182 ms 83488 KB Output is correct
42 Correct 1175 ms 85612 KB Output is correct
43 Correct 1120 ms 95268 KB Output is correct
44 Correct 141 ms 25416 KB Output is correct
45 Correct 175 ms 25616 KB Output is correct
46 Correct 228 ms 25532 KB Output is correct
47 Correct 327 ms 25528 KB Output is correct
48 Correct 457 ms 26324 KB Output is correct
49 Correct 1730 ms 90036 KB Output is correct
50 Correct 1926 ms 87756 KB Output is correct
51 Correct 1602 ms 87744 KB Output is correct
52 Correct 2940 ms 87676 KB Output is correct
53 Correct 1602 ms 87676 KB Output is correct
54 Correct 1499 ms 100724 KB Output is correct
55 Correct 1508 ms 100684 KB Output is correct
56 Correct 210 ms 25404 KB Output is correct
57 Correct 462 ms 25436 KB Output is correct
58 Correct 638 ms 26128 KB Output is correct
59 Correct 1981 ms 89876 KB Output is correct
60 Correct 3311 ms 86288 KB Output is correct
61 Correct 1852 ms 91152 KB Output is correct
62 Correct 1574 ms 90896 KB Output is correct
63 Correct 3248 ms 92544 KB Output is correct
64 Correct 2305 ms 93644 KB Output is correct
65 Correct 1890 ms 92852 KB Output is correct
66 Correct 2126 ms 92836 KB Output is correct
67 Correct 2068 ms 95232 KB Output is correct
68 Correct 1793 ms 99308 KB Output is correct
69 Correct 3639 ms 104520 KB Output is correct