oj.uz

Submission #974921

# Submission time Handle Problem Language Result Execution time Memory
974921 2024-05-04T07:11:33 Z yeediot Port Facility (JOI17_port_facility) C++17
100 / 100
 509 ms 94804 KB 
#include <cstdio>
#include <iostream>
#include <algorithm>
#include <set>
#include <cstdlib>
#define fi first
#define se second

using namespace std;

typedef pair<int,int> pii;

const int N=1000010,P=1e9+7;

inline char nc(){
  static char buf[100000],*p1=buf,*p2=buf;
  return p1==p2&&(p2=(p1=buf)+fread(buf,1,100000,stdin),p1==p2)?EOF:*p1++;
}

inline void read(int &x){
  char c=nc(); x=0;
  for(;c>'9'||c<'0';c=nc());for(;c>='0'&&c<='9';x=x*10+c-'0',c=nc());
}

int n,cnt,a[N],b[N],id[N],G[N],t;
set<pii> S;

pii q[N];

struct edge{
  int t,nx;
}E[N<<2];

inline bool cmp(const int &x,const int &y){
  return a[x]<a[y];
}

inline void addedge(int x,int y){
  E[++cnt].t=y; E[cnt].nx=G[x]; G[x]=cnt;
  E[++cnt].t=x; E[cnt].nx=G[y]; G[y]=cnt;
}

int cl[N];

void dfs(int x,int c){
  if(cl[x]){
    if(cl[x]!=c) puts("0"),exit(0);
    return ;
  }
  cl[x]=c;
  for(int i=G[x];i;i=E[i].nx) dfs(E[i].t,c^1);
}

int nxt[N];

int main(){
    read(n);
    for(int i=1;i<=n;i++)
    read(a[i]),read(b[i]),id[i]=i;
    sort(id+1,id+1+n,cmp);
    for(int i=1;i<=n;i++){
    while(!S.empty() && S.begin()->fi<a[id[i]]){
      int cur=S.begin()->se;
      S.erase(S.begin());
      if(nxt[cur]) S.insert(pii(b[nxt[cur]],nxt[cur]));
    }
    set<pii>::iterator cur=S.insert(pii(b[id[i]],id[i])).fi;
    t=0;
    while(cur!=S.begin()){
      cur--; q[++t]=*cur;
    }
    int mx=1<<29;
    for(int j=1;j<=t;j++){
    mx=min(mx,q[j].fi);
    addedge(q[j].se,id[i]);
      }
    for(int i=1;i<t;i++) S.erase(q[i]);
    for(int i=2;i<=t;i++) nxt[q[i].se]=q[i-1].se;
  }
  int ans=1;
  for(int i=1;i<=n;i++)
    if(!cl[i]){
      dfs(i,2); ans=2*ans%P; 
    }
  printf("%d\n",ans);
  return 0;
}

Compilation message

port_facility.cpp: In function 'void read(int&)':
port_facility.cpp:22:3: warning: this 'for' clause does not guard... [-Wmisleading-indentation]
   22 |   for(;c>'9'||c<'0';c=nc());for(;c>='0'&&c<='9';x=x*10+c-'0',c=nc());
      |   ^~~
port_facility.cpp:22:29: note: ...this statement, but the latter is misleadingly indented as if it were guarded by the 'for'
   22 |   for(;c>'9'||c<'0';c=nc());for(;c>='0'&&c<='9';x=x*10+c-'0',c=nc());
      |                             ^~~

Subtask #1
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 5 ms 12636 KB Output is correct
2 Correct 2 ms 12636 KB Output is correct
3 Correct 2 ms 12636 KB Output is correct
4 Correct 2 ms 12636 KB Output is correct
5 Correct 2 ms 12636 KB Output is correct
6 Correct 2 ms 12636 KB Output is correct
7 Correct 2 ms 12636 KB Output is correct
8 Correct 2 ms 12632 KB Output is correct
9 Correct 2 ms 12636 KB Output is correct
10 Correct 2 ms 12740 KB Output is correct
11 Correct 2 ms 12636 KB Output is correct
12 Correct 2 ms 12636 KB Output is correct
13 Correct 2 ms 12636 KB Output is correct
14 Correct 2 ms 8792 KB Output is correct
15 Correct 1 ms 8540 KB Output is correct
16 Correct 2 ms 12636 KB Output is correct
17 Correct 2 ms 12636 KB Output is correct
18 Correct 2 ms 12636 KB Output is correct
19 Correct 2 ms 8540 KB Output is correct
20 Correct 2 ms 12636 KB Output is correct
21 Correct 1 ms 8540 KB Output is correct
22 Correct 2 ms 8536 KB Output is correct
23 Correct 2 ms 12632 KB Output is correct
24 Correct 2 ms 12632 KB Output is correct

Subtask #2
12.0 / 12.0

# Verdict Execution time Memory Grader output
1 Correct 5 ms 12636 KB Output is correct
2 Correct 2 ms 12636 KB Output is correct
3 Correct 2 ms 12636 KB Output is correct
4 Correct 2 ms 12636 KB Output is correct
5 Correct 2 ms 12636 KB Output is correct
6 Correct 2 ms 12636 KB Output is correct
7 Correct 2 ms 12636 KB Output is correct
8 Correct 2 ms 12632 KB Output is correct
9 Correct 2 ms 12636 KB Output is correct
10 Correct 2 ms 12740 KB Output is correct
11 Correct 2 ms 12636 KB Output is correct
12 Correct 2 ms 12636 KB Output is correct
13 Correct 2 ms 12636 KB Output is correct
14 Correct 2 ms 8792 KB Output is correct
15 Correct 1 ms 8540 KB Output is correct
16 Correct 2 ms 12636 KB Output is correct
17 Correct 2 ms 12636 KB Output is correct
18 Correct 2 ms 12636 KB Output is correct
19 Correct 2 ms 8540 KB Output is correct
20 Correct 2 ms 12636 KB Output is correct
21 Correct 1 ms 8540 KB Output is correct
22 Correct 2 ms 8536 KB Output is correct
23 Correct 2 ms 12632 KB Output is correct
24 Correct 2 ms 12632 KB Output is correct
25 Correct 2 ms 12632 KB Output is correct
26 Correct 2 ms 12636 KB Output is correct
27 Correct 3 ms 12632 KB Output is correct
28 Correct 2 ms 12636 KB Output is correct
29 Correct 2 ms 12632 KB Output is correct
30 Correct 2 ms 12636 KB Output is correct
31 Correct 2 ms 12636 KB Output is correct
32 Correct 2 ms 12804 KB Output is correct
33 Correct 2 ms 12636 KB Output is correct
34 Correct 2 ms 12632 KB Output is correct
35 Correct 2 ms 8796 KB Output is correct
36 Correct 2 ms 8664 KB Output is correct
37 Correct 4 ms 12636 KB Output is correct
38 Correct 3 ms 12636 KB Output is correct
39 Correct 2 ms 12636 KB Output is correct
40 Correct 2 ms 8540 KB Output is correct
41 Correct 2 ms 12636 KB Output is correct
42 Correct 2 ms 12980 KB Output is correct
43 Correct 2 ms 12636 KB Output is correct
44 Correct 2 ms 12636 KB Output is correct

Subtask #3
56.0 / 56.0

# Verdict Execution time Memory Grader output
1 Correct 5 ms 12636 KB Output is correct
2 Correct 2 ms 12636 KB Output is correct
3 Correct 2 ms 12636 KB Output is correct
4 Correct 2 ms 12636 KB Output is correct
5 Correct 2 ms 12636 KB Output is correct
6 Correct 2 ms 12636 KB Output is correct
7 Correct 2 ms 12636 KB Output is correct
8 Correct 2 ms 12632 KB Output is correct
9 Correct 2 ms 12636 KB Output is correct
10 Correct 2 ms 12740 KB Output is correct
11 Correct 2 ms 12636 KB Output is correct
12 Correct 2 ms 12636 KB Output is correct
13 Correct 2 ms 12636 KB Output is correct
14 Correct 2 ms 8792 KB Output is correct
15 Correct 1 ms 8540 KB Output is correct
16 Correct 2 ms 12636 KB Output is correct
17 Correct 2 ms 12636 KB Output is correct
18 Correct 2 ms 12636 KB Output is correct
19 Correct 2 ms 8540 KB Output is correct
20 Correct 2 ms 12636 KB Output is correct
21 Correct 1 ms 8540 KB Output is correct
22 Correct 2 ms 8536 KB Output is correct
23 Correct 2 ms 12632 KB Output is correct
24 Correct 2 ms 12632 KB Output is correct
25 Correct 2 ms 12632 KB Output is correct
26 Correct 2 ms 12636 KB Output is correct
27 Correct 3 ms 12632 KB Output is correct
28 Correct 2 ms 12636 KB Output is correct
29 Correct 2 ms 12632 KB Output is correct
30 Correct 2 ms 12636 KB Output is correct
31 Correct 2 ms 12636 KB Output is correct
32 Correct 2 ms 12804 KB Output is correct
33 Correct 2 ms 12636 KB Output is correct
34 Correct 2 ms 12632 KB Output is correct
35 Correct 2 ms 8796 KB Output is correct
36 Correct 2 ms 8664 KB Output is correct
37 Correct 4 ms 12636 KB Output is correct
38 Correct 3 ms 12636 KB Output is correct
39 Correct 2 ms 12636 KB Output is correct
40 Correct 2 ms 8540 KB Output is correct
41 Correct 2 ms 12636 KB Output is correct
42 Correct 2 ms 12980 KB Output is correct
43 Correct 2 ms 12636 KB Output is correct
44 Correct 2 ms 12636 KB Output is correct
45 Correct 35 ms 19908 KB Output is correct
46 Correct 34 ms 20048 KB Output is correct
47 Correct 35 ms 19792 KB Output is correct
48 Correct 35 ms 20060 KB Output is correct
49 Correct 34 ms 20048 KB Output is correct
50 Correct 30 ms 19800 KB Output is correct
51 Correct 33 ms 21928 KB Output is correct
52 Correct 18 ms 10332 KB Output is correct
53 Correct 27 ms 14932 KB Output is correct
54 Correct 25 ms 22356 KB Output is correct
55 Correct 26 ms 21520 KB Output is correct
56 Correct 21 ms 22032 KB Output is correct
57 Correct 20 ms 16468 KB Output is correct
58 Correct 21 ms 10332 KB Output is correct
59 Correct 25 ms 15892 KB Output is correct
60 Correct 29 ms 20236 KB Output is correct
61 Correct 36 ms 19796 KB Output is correct
62 Correct 28 ms 20060 KB Output is correct
63 Correct 33 ms 19280 KB Output is correct
64 Correct 30 ms 21840 KB Output is correct
65 Correct 24 ms 20420 KB Output is correct
66 Correct 25 ms 20572 KB Output is correct
67 Correct 34 ms 23052 KB Output is correct
68 Correct 33 ms 23168 KB Output is correct
69 Correct 32 ms 22028 KB Output is correct
70 Correct 32 ms 23900 KB Output is correct
71 Correct 30 ms 23128 KB Output is correct
72 Correct 29 ms 23124 KB Output is correct
73 Correct 30 ms 23896 KB Output is correct
74 Correct 31 ms 23788 KB Output is correct
75 Correct 23 ms 18256 KB Output is correct
76 Correct 26 ms 19468 KB Output is correct
77 Correct 22 ms 19536 KB Output is correct
78 Correct 34 ms 20052 KB Output is correct
79 Correct 33 ms 20052 KB Output is correct

Subtask #4
22.0 / 22.0

# Verdict Execution time Memory Grader output
1 Correct 5 ms 12636 KB Output is correct
2 Correct 2 ms 12636 KB Output is correct
3 Correct 2 ms 12636 KB Output is correct
4 Correct 2 ms 12636 KB Output is correct
5 Correct 2 ms 12636 KB Output is correct
6 Correct 2 ms 12636 KB Output is correct
7 Correct 2 ms 12636 KB Output is correct
8 Correct 2 ms 12632 KB Output is correct
9 Correct 2 ms 12636 KB Output is correct
10 Correct 2 ms 12740 KB Output is correct
11 Correct 2 ms 12636 KB Output is correct
12 Correct 2 ms 12636 KB Output is correct
13 Correct 2 ms 12636 KB Output is correct
14 Correct 2 ms 8792 KB Output is correct
15 Correct 1 ms 8540 KB Output is correct
16 Correct 2 ms 12636 KB Output is correct
17 Correct 2 ms 12636 KB Output is correct
18 Correct 2 ms 12636 KB Output is correct
19 Correct 2 ms 8540 KB Output is correct
20 Correct 2 ms 12636 KB Output is correct
21 Correct 1 ms 8540 KB Output is correct
22 Correct 2 ms 8536 KB Output is correct
23 Correct 2 ms 12632 KB Output is correct
24 Correct 2 ms 12632 KB Output is correct
25 Correct 2 ms 12632 KB Output is correct
26 Correct 2 ms 12636 KB Output is correct
27 Correct 3 ms 12632 KB Output is correct
28 Correct 2 ms 12636 KB Output is correct
29 Correct 2 ms 12632 KB Output is correct
30 Correct 2 ms 12636 KB Output is correct
31 Correct 2 ms 12636 KB Output is correct
32 Correct 2 ms 12804 KB Output is correct
33 Correct 2 ms 12636 KB Output is correct
34 Correct 2 ms 12632 KB Output is correct
35 Correct 2 ms 8796 KB Output is correct
36 Correct 2 ms 8664 KB Output is correct
37 Correct 4 ms 12636 KB Output is correct
38 Correct 3 ms 12636 KB Output is correct
39 Correct 2 ms 12636 KB Output is correct
40 Correct 2 ms 8540 KB Output is correct
41 Correct 2 ms 12636 KB Output is correct
42 Correct 2 ms 12980 KB Output is correct
43 Correct 2 ms 12636 KB Output is correct
44 Correct 2 ms 12636 KB Output is correct
45 Correct 35 ms 19908 KB Output is correct
46 Correct 34 ms 20048 KB Output is correct
47 Correct 35 ms 19792 KB Output is correct
48 Correct 35 ms 20060 KB Output is correct
49 Correct 34 ms 20048 KB Output is correct
50 Correct 30 ms 19800 KB Output is correct
51 Correct 33 ms 21928 KB Output is correct
52 Correct 18 ms 10332 KB Output is correct
53 Correct 27 ms 14932 KB Output is correct
54 Correct 25 ms 22356 KB Output is correct
55 Correct 26 ms 21520 KB Output is correct
56 Correct 21 ms 22032 KB Output is correct
57 Correct 20 ms 16468 KB Output is correct
58 Correct 21 ms 10332 KB Output is correct
59 Correct 25 ms 15892 KB Output is correct
60 Correct 29 ms 20236 KB Output is correct
61 Correct 36 ms 19796 KB Output is correct
62 Correct 28 ms 20060 KB Output is correct
63 Correct 33 ms 19280 KB Output is correct
64 Correct 30 ms 21840 KB Output is correct
65 Correct 24 ms 20420 KB Output is correct
66 Correct 25 ms 20572 KB Output is correct
67 Correct 34 ms 23052 KB Output is correct
68 Correct 33 ms 23168 KB Output is correct
69 Correct 32 ms 22028 KB Output is correct
70 Correct 32 ms 23900 KB Output is correct
71 Correct 30 ms 23128 KB Output is correct
72 Correct 29 ms 23124 KB Output is correct
73 Correct 30 ms 23896 KB Output is correct
74 Correct 31 ms 23788 KB Output is correct
75 Correct 23 ms 18256 KB Output is correct
76 Correct 26 ms 19468 KB Output is correct
77 Correct 22 ms 19536 KB Output is correct
78 Correct 34 ms 20052 KB Output is correct
79 Correct 33 ms 20052 KB Output is correct
80 Correct 488 ms 69440 KB Output is correct
81 Correct 468 ms 69572 KB Output is correct
82 Correct 509 ms 69200 KB Output is correct
83 Correct 467 ms 69456 KB Output is correct
84 Correct 473 ms 69980 KB Output is correct
85 Correct 427 ms 71020 KB Output is correct
86 Correct 477 ms 68948 KB Output is correct
87 Correct 208 ms 34080 KB Output is correct
88 Correct 376 ms 81204 KB Output is correct
89 Correct 301 ms 86384 KB Output is correct
90 Correct 294 ms 83484 KB Output is correct
91 Correct 320 ms 84256 KB Output is correct
92 Correct 278 ms 46892 KB Output is correct
93 Correct 215 ms 34196 KB Output is correct
94 Correct 413 ms 62304 KB Output is correct
95 Correct 451 ms 67636 KB Output is correct
96 Correct 478 ms 66244 KB Output is correct
97 Correct 399 ms 63868 KB Output is correct
98 Correct 447 ms 65824 KB Output is correct
99 Correct 464 ms 70320 KB Output is correct
100 Correct 343 ms 69460 KB Output is correct
101 Correct 370 ms 69684 KB Output is correct
102 Correct 501 ms 86776 KB Output is correct
103 Correct 476 ms 86792 KB Output is correct
104 Correct 484 ms 94372 KB Output is correct
105 Correct 504 ms 94804 KB Output is correct
106 Correct 389 ms 86776 KB Output is correct
107 Correct 437 ms 86964 KB Output is correct
108 Correct 387 ms 94496 KB Output is correct
109 Correct 430 ms 94544 KB Output is correct
110 Correct 368 ms 85876 KB Output is correct
111 Correct 328 ms 86556 KB Output is correct
112 Correct 394 ms 86372 KB Output is correct
113 Correct 486 ms 68896 KB Output is correct
114 Correct 479 ms 69540 KB Output is correct