oj.uz

Submission #430714

# Submission time Handle Problem Language Result Execution time Memory
430714 2021-06-17T02:19:55 Z cpp219 Port Facility (JOI17_port_facility) C++14
100 / 100
 1712 ms 108816 KB 
#pragma GCC optimization "O2"
#pragma GCC optimization "unroll-loop"
#pragma GCC target ("avx2")

#include <bits/stdc++.h>
#define ll long long
#define ld long double
#define fs first
#define sc second
using namespace std;
const ll N = 2e6 + 9;
const ll inf = 2e9 + 7;
const ll mod = 1e9 + 7;
typedef pair<ll,ll> LL;
LL a[N];
ll n,lab[N];
set<LL> s;

ll Find(ll u){
    if (lab[u] < 0) return u;
    return lab[u] = Find(lab[u]);
}

void Union(ll p,ll q){
    ll r = Find(p),s = Find(q);
    if (r == s) return;
    if (lab[r] > lab[s]) swap(r,s);
    lab[r] += lab[s]; lab[s] = r;
}

int main(){
    ios_base::sync_with_stdio(0);
    cin.tie(0), cout.tie(0);
    #define task "tst"
    if (fopen(task".inp", "r")){
        freopen(task".inp", "r", stdin);
        //freopen(task".out", "w", stdout);
    }
    cin>>n; memset(lab,-1,sizeof(lab));
    for (ll i = 1;i <= n;i++) cin>>a[i].fs>>a[i].sc;
    sort(a + 1,a + n + 1);
    for (ll i = 1;i <= n;i++){
        auto st = s.lower_bound({a[i].fs,0}),en = s.upper_bound({a[i].sc,inf});
        if (en != s.begin()){
            for (;st != en;st++){
                Union(i,st->sc + n); Union(i + n,st->sc);
                if (Find(st->sc) == Find(prev(en)->sc)) break;
            }
        }
        s.insert({a[i].sc,i});
    }
    for (ll i = 1;i <= n;i++) if (Find(i) == Find(i + n)) return cout<<0,0;
    ll ans = 1;
    for (ll i = 1;i <= n;i++) if (Find(i) == i) ans = (ans*2)%mod;
    cout<<ans;
}

Compilation message

port_facility.cpp:1: warning: ignoring '#pragma GCC optimization' [-Wunknown-pragmas]
    1 | #pragma GCC optimization "O2"
      | 
port_facility.cpp:2: warning: ignoring '#pragma GCC optimization' [-Wunknown-pragmas]
    2 | #pragma GCC optimization "unroll-loop"
      | 
port_facility.cpp: In function 'int main()':
port_facility.cpp:36:16: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   36 |         freopen(task".inp", "r", stdin);
      |         ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~

Subtask #1
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 8 ms 15948 KB Output is correct
2 Correct 8 ms 15892 KB Output is correct
3 Correct 8 ms 15948 KB Output is correct
4 Correct 7 ms 15948 KB Output is correct
5 Correct 8 ms 15928 KB Output is correct
6 Correct 8 ms 15936 KB Output is correct
7 Correct 7 ms 15948 KB Output is correct
8 Correct 7 ms 15948 KB Output is correct
9 Correct 8 ms 15948 KB Output is correct
10 Correct 8 ms 15932 KB Output is correct
11 Correct 9 ms 15952 KB Output is correct
12 Correct 7 ms 15892 KB Output is correct
13 Correct 7 ms 15956 KB Output is correct
14 Correct 8 ms 15948 KB Output is correct
15 Correct 8 ms 15956 KB Output is correct
16 Correct 9 ms 15948 KB Output is correct
17 Correct 9 ms 15948 KB Output is correct
18 Correct 8 ms 15932 KB Output is correct
19 Correct 7 ms 15948 KB Output is correct
20 Correct 8 ms 15948 KB Output is correct
21 Correct 8 ms 15940 KB Output is correct
22 Correct 7 ms 15936 KB Output is correct
23 Correct 8 ms 15948 KB Output is correct
24 Correct 8 ms 15948 KB Output is correct

Subtask #2
12.0 / 12.0

# Verdict Execution time Memory Grader output
1 Correct 8 ms 15948 KB Output is correct
2 Correct 8 ms 15892 KB Output is correct
3 Correct 8 ms 15948 KB Output is correct
4 Correct 7 ms 15948 KB Output is correct
5 Correct 8 ms 15928 KB Output is correct
6 Correct 8 ms 15936 KB Output is correct
7 Correct 7 ms 15948 KB Output is correct
8 Correct 7 ms 15948 KB Output is correct
9 Correct 8 ms 15948 KB Output is correct
10 Correct 8 ms 15932 KB Output is correct
11 Correct 9 ms 15952 KB Output is correct
12 Correct 7 ms 15892 KB Output is correct
13 Correct 7 ms 15956 KB Output is correct
14 Correct 8 ms 15948 KB Output is correct
15 Correct 8 ms 15956 KB Output is correct
16 Correct 9 ms 15948 KB Output is correct
17 Correct 9 ms 15948 KB Output is correct
18 Correct 8 ms 15932 KB Output is correct
19 Correct 7 ms 15948 KB Output is correct
20 Correct 8 ms 15948 KB Output is correct
21 Correct 8 ms 15940 KB Output is correct
22 Correct 7 ms 15936 KB Output is correct
23 Correct 8 ms 15948 KB Output is correct
24 Correct 8 ms 15948 KB Output is correct
25 Correct 9 ms 16080 KB Output is correct
26 Correct 10 ms 16072 KB Output is correct
27 Correct 8 ms 16076 KB Output is correct
28 Correct 9 ms 16076 KB Output is correct
29 Correct 9 ms 16088 KB Output is correct
30 Correct 9 ms 16076 KB Output is correct
31 Correct 9 ms 16080 KB Output is correct
32 Correct 10 ms 16036 KB Output is correct
33 Correct 9 ms 16076 KB Output is correct
34 Correct 10 ms 16076 KB Output is correct
35 Correct 10 ms 16104 KB Output is correct
36 Correct 8 ms 16076 KB Output is correct
37 Correct 8 ms 16076 KB Output is correct
38 Correct 8 ms 16076 KB Output is correct
39 Correct 8 ms 16076 KB Output is correct
40 Correct 8 ms 16076 KB Output is correct
41 Correct 8 ms 16080 KB Output is correct
42 Correct 9 ms 16088 KB Output is correct
43 Correct 8 ms 16160 KB Output is correct
44 Correct 8 ms 16156 KB Output is correct

Subtask #3
56.0 / 56.0

# Verdict Execution time Memory Grader output
1 Correct 8 ms 15948 KB Output is correct
2 Correct 8 ms 15892 KB Output is correct
3 Correct 8 ms 15948 KB Output is correct
4 Correct 7 ms 15948 KB Output is correct
5 Correct 8 ms 15928 KB Output is correct
6 Correct 8 ms 15936 KB Output is correct
7 Correct 7 ms 15948 KB Output is correct
8 Correct 7 ms 15948 KB Output is correct
9 Correct 8 ms 15948 KB Output is correct
10 Correct 8 ms 15932 KB Output is correct
11 Correct 9 ms 15952 KB Output is correct
12 Correct 7 ms 15892 KB Output is correct
13 Correct 7 ms 15956 KB Output is correct
14 Correct 8 ms 15948 KB Output is correct
15 Correct 8 ms 15956 KB Output is correct
16 Correct 9 ms 15948 KB Output is correct
17 Correct 9 ms 15948 KB Output is correct
18 Correct 8 ms 15932 KB Output is correct
19 Correct 7 ms 15948 KB Output is correct
20 Correct 8 ms 15948 KB Output is correct
21 Correct 8 ms 15940 KB Output is correct
22 Correct 7 ms 15936 KB Output is correct
23 Correct 8 ms 15948 KB Output is correct
24 Correct 8 ms 15948 KB Output is correct
25 Correct 9 ms 16080 KB Output is correct
26 Correct 10 ms 16072 KB Output is correct
27 Correct 8 ms 16076 KB Output is correct
28 Correct 9 ms 16076 KB Output is correct
29 Correct 9 ms 16088 KB Output is correct
30 Correct 9 ms 16076 KB Output is correct
31 Correct 9 ms 16080 KB Output is correct
32 Correct 10 ms 16036 KB Output is correct
33 Correct 9 ms 16076 KB Output is correct
34 Correct 10 ms 16076 KB Output is correct
35 Correct 10 ms 16104 KB Output is correct
36 Correct 8 ms 16076 KB Output is correct
37 Correct 8 ms 16076 KB Output is correct
38 Correct 8 ms 16076 KB Output is correct
39 Correct 8 ms 16076 KB Output is correct
40 Correct 8 ms 16076 KB Output is correct
41 Correct 8 ms 16080 KB Output is correct
42 Correct 9 ms 16088 KB Output is correct
43 Correct 8 ms 16160 KB Output is correct
44 Correct 8 ms 16156 KB Output is correct
45 Correct 94 ms 25040 KB Output is correct
46 Correct 118 ms 25040 KB Output is correct
47 Correct 95 ms 25020 KB Output is correct
48 Correct 89 ms 25044 KB Output is correct
49 Correct 88 ms 25040 KB Output is correct
50 Correct 79 ms 25040 KB Output is correct
51 Correct 88 ms 25072 KB Output is correct
52 Correct 98 ms 24992 KB Output is correct
53 Correct 97 ms 25056 KB Output is correct
54 Correct 85 ms 24992 KB Output is correct
55 Correct 89 ms 25056 KB Output is correct
56 Correct 92 ms 24944 KB Output is correct
57 Correct 93 ms 25052 KB Output is correct
58 Correct 101 ms 24940 KB Output is correct
59 Correct 86 ms 25008 KB Output is correct
60 Correct 86 ms 25008 KB Output is correct
61 Correct 90 ms 25048 KB Output is correct
62 Correct 73 ms 24964 KB Output is correct
63 Correct 75 ms 25004 KB Output is correct
64 Correct 89 ms 24988 KB Output is correct
65 Correct 137 ms 24964 KB Output is correct
66 Correct 121 ms 24960 KB Output is correct
67 Correct 95 ms 25052 KB Output is correct
68 Correct 92 ms 25056 KB Output is correct
69 Correct 88 ms 24932 KB Output is correct
70 Correct 101 ms 25084 KB Output is correct
71 Correct 121 ms 24968 KB Output is correct
72 Correct 111 ms 24932 KB Output is correct
73 Correct 108 ms 24944 KB Output is correct
74 Correct 103 ms 25056 KB Output is correct
75 Correct 93 ms 25048 KB Output is correct
76 Correct 107 ms 24988 KB Output is correct
77 Correct 98 ms 25040 KB Output is correct
78 Correct 84 ms 25056 KB Output is correct
79 Correct 90 ms 24936 KB Output is correct

Subtask #4
22.0 / 22.0

# Verdict Execution time Memory Grader output
1 Correct 8 ms 15948 KB Output is correct
2 Correct 8 ms 15892 KB Output is correct
3 Correct 8 ms 15948 KB Output is correct
4 Correct 7 ms 15948 KB Output is correct
5 Correct 8 ms 15928 KB Output is correct
6 Correct 8 ms 15936 KB Output is correct
7 Correct 7 ms 15948 KB Output is correct
8 Correct 7 ms 15948 KB Output is correct
9 Correct 8 ms 15948 KB Output is correct
10 Correct 8 ms 15932 KB Output is correct
11 Correct 9 ms 15952 KB Output is correct
12 Correct 7 ms 15892 KB Output is correct
13 Correct 7 ms 15956 KB Output is correct
14 Correct 8 ms 15948 KB Output is correct
15 Correct 8 ms 15956 KB Output is correct
16 Correct 9 ms 15948 KB Output is correct
17 Correct 9 ms 15948 KB Output is correct
18 Correct 8 ms 15932 KB Output is correct
19 Correct 7 ms 15948 KB Output is correct
20 Correct 8 ms 15948 KB Output is correct
21 Correct 8 ms 15940 KB Output is correct
22 Correct 7 ms 15936 KB Output is correct
23 Correct 8 ms 15948 KB Output is correct
24 Correct 8 ms 15948 KB Output is correct
25 Correct 9 ms 16080 KB Output is correct
26 Correct 10 ms 16072 KB Output is correct
27 Correct 8 ms 16076 KB Output is correct
28 Correct 9 ms 16076 KB Output is correct
29 Correct 9 ms 16088 KB Output is correct
30 Correct 9 ms 16076 KB Output is correct
31 Correct 9 ms 16080 KB Output is correct
32 Correct 10 ms 16036 KB Output is correct
33 Correct 9 ms 16076 KB Output is correct
34 Correct 10 ms 16076 KB Output is correct
35 Correct 10 ms 16104 KB Output is correct
36 Correct 8 ms 16076 KB Output is correct
37 Correct 8 ms 16076 KB Output is correct
38 Correct 8 ms 16076 KB Output is correct
39 Correct 8 ms 16076 KB Output is correct
40 Correct 8 ms 16076 KB Output is correct
41 Correct 8 ms 16080 KB Output is correct
42 Correct 9 ms 16088 KB Output is correct
43 Correct 8 ms 16160 KB Output is correct
44 Correct 8 ms 16156 KB Output is correct
45 Correct 94 ms 25040 KB Output is correct
46 Correct 118 ms 25040 KB Output is correct
47 Correct 95 ms 25020 KB Output is correct
48 Correct 89 ms 25044 KB Output is correct
49 Correct 88 ms 25040 KB Output is correct
50 Correct 79 ms 25040 KB Output is correct
51 Correct 88 ms 25072 KB Output is correct
52 Correct 98 ms 24992 KB Output is correct
53 Correct 97 ms 25056 KB Output is correct
54 Correct 85 ms 24992 KB Output is correct
55 Correct 89 ms 25056 KB Output is correct
56 Correct 92 ms 24944 KB Output is correct
57 Correct 93 ms 25052 KB Output is correct
58 Correct 101 ms 24940 KB Output is correct
59 Correct 86 ms 25008 KB Output is correct
60 Correct 86 ms 25008 KB Output is correct
61 Correct 90 ms 25048 KB Output is correct
62 Correct 73 ms 24964 KB Output is correct
63 Correct 75 ms 25004 KB Output is correct
64 Correct 89 ms 24988 KB Output is correct
65 Correct 137 ms 24964 KB Output is correct
66 Correct 121 ms 24960 KB Output is correct
67 Correct 95 ms 25052 KB Output is correct
68 Correct 92 ms 25056 KB Output is correct
69 Correct 88 ms 24932 KB Output is correct
70 Correct 101 ms 25084 KB Output is correct
71 Correct 121 ms 24968 KB Output is correct
72 Correct 111 ms 24932 KB Output is correct
73 Correct 108 ms 24944 KB Output is correct
74 Correct 103 ms 25056 KB Output is correct
75 Correct 93 ms 25048 KB Output is correct
76 Correct 107 ms 24988 KB Output is correct
77 Correct 98 ms 25040 KB Output is correct
78 Correct 84 ms 25056 KB Output is correct
79 Correct 90 ms 24936 KB Output is correct
80 Correct 868 ms 108812 KB Output is correct
81 Correct 887 ms 108688 KB Output is correct
82 Correct 921 ms 108764 KB Output is correct
83 Correct 824 ms 108700 KB Output is correct
84 Correct 803 ms 108776 KB Output is correct
85 Correct 813 ms 108776 KB Output is correct
86 Correct 917 ms 108700 KB Output is correct
87 Correct 1006 ms 108772 KB Output is correct
88 Correct 1111 ms 108800 KB Output is correct
89 Correct 1085 ms 108800 KB Output is correct
90 Correct 1106 ms 108772 KB Output is correct
91 Correct 1008 ms 108700 KB Output is correct
92 Correct 1187 ms 108776 KB Output is correct
93 Correct 1145 ms 108800 KB Output is correct
94 Correct 761 ms 108796 KB Output is correct
95 Correct 789 ms 108764 KB Output is correct
96 Correct 780 ms 108736 KB Output is correct
97 Correct 769 ms 108688 KB Output is correct
98 Correct 782 ms 108804 KB Output is correct
99 Correct 807 ms 108792 KB Output is correct
100 Correct 1712 ms 108752 KB Output is correct
101 Correct 1672 ms 108816 KB Output is correct
102 Correct 1028 ms 108816 KB Output is correct
103 Correct 1085 ms 108692 KB Output is correct
104 Correct 1123 ms 108776 KB Output is correct
105 Correct 1103 ms 108736 KB Output is correct
106 Correct 1144 ms 108728 KB Output is correct
107 Correct 1187 ms 108724 KB Output is correct
108 Correct 1175 ms 108788 KB Output is correct
109 Correct 1136 ms 108712 KB Output is correct
110 Correct 1131 ms 108768 KB Output is correct
111 Correct 1161 ms 108804 KB Output is correct
112 Correct 1080 ms 108720 KB Output is correct
113 Correct 818 ms 108708 KB Output is correct
114 Correct 869 ms 108780 KB Output is correct