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Submission #932931

# Submission time Handle Problem Language Result Execution time Memory
932931 2024-02-24T14:49:26 Z 12345678 Strange Device (APIO19_strange_device) C++17
100 / 100
 725 ms 115920 KB 
#include <bits/stdc++.h>

using namespace std;

#define ll unsigned long long

const int nx=1e6+5;
ll n, a, b, l[nx], r[nx], sm, p, mx, res, tmp;
set<pair<ll, ll>> s;

void add_range(ll x, ll y)
{
    x=x%p;
    y=y%p;
    if (y<x) y+=p;
    s.insert({x, min(p-1, y)});
    if (y>=p) s.insert({0, y-p});
}

int main()
{
    cin.tie(NULL)->sync_with_stdio(false);
    cin>>n>>a>>b;
    for (int i=1; i<=n; i++) cin>>l[i]>>r[i], mx=max(mx, r[i]-l[i]+1), sm+=(r[i]-l[i]+1);
    tmp=a/__gcd(a, b+1);
    if (tmp >= LLONG_MAX/b) return cout<<sm, 0;
    p=tmp*b;
    if (mx>=p) return cout<<p, 0;
    for (int i=1; i<=n; i++) add_range(l[i], r[i]);
    //for (auto [x, y]:s) cout<<"val "<<x<<' '<<y<<'\n';
    for (auto itr=s.begin(); itr!=s.end()&&next(itr)!=s.end();)
    {
        auto itr2=next(itr);
        pair<ll, ll> nw;
        if (itr2->first>itr->second+1) itr=itr2;
        else nw={itr->first, max(itr->second, itr2->second)}, s.erase(itr), s.erase(itr2), s.insert(nw), itr=s.find(nw);
    }
    for (auto [x, y]:s) res+=y-x+1;
    cout<<res;
}

Compilation message

strange_device.cpp: In function 'int main()':
strange_device.cpp:24:20: warning: comparison of integer expressions of different signedness: 'int' and 'long long unsigned int' [-Wsign-compare]
   24 |     for (int i=1; i<=n; i++) cin>>l[i]>>r[i], mx=max(mx, r[i]-l[i]+1), sm+=(r[i]-l[i]+1);
      |                   ~^~~
strange_device.cpp:29:20: warning: comparison of integer expressions of different signedness: 'int' and 'long long unsigned int' [-Wsign-compare]
   29 |     for (int i=1; i<=n; i++) add_range(l[i], r[i]);
      |                   ~^~~

Subtask #1
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 2392 KB Output is correct
2 Correct 5 ms 3164 KB Output is correct
3 Correct 5 ms 3164 KB Output is correct
4 Correct 0 ms 2396 KB Output is correct
5 Correct 1 ms 2396 KB Output is correct
6 Correct 0 ms 2396 KB Output is correct
7 Correct 1 ms 2396 KB Output is correct
8 Correct 1 ms 2396 KB Output is correct
9 Correct 1 ms 2396 KB Output is correct
10 Correct 1 ms 2396 KB Output is correct
11 Correct 1 ms 2392 KB Output is correct
12 Correct 1 ms 2392 KB Output is correct
13 Correct 1 ms 2512 KB Output is correct
14 Correct 1 ms 2396 KB Output is correct
15 Correct 1 ms 2396 KB Output is correct
16 Correct 5 ms 3164 KB Output is correct
17 Correct 50 ms 12884 KB Output is correct
18 Correct 1 ms 2392 KB Output is correct

Subtask #2
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 2396 KB Output is correct
2 Correct 1 ms 2396 KB Output is correct
3 Correct 1 ms 2396 KB Output is correct
4 Correct 1 ms 2396 KB Output is correct
5 Correct 1 ms 2396 KB Output is correct

Subtask #3
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 2396 KB Output is correct
2 Correct 1 ms 2396 KB Output is correct
3 Correct 1 ms 2396 KB Output is correct
4 Correct 1 ms 2392 KB Output is correct
5 Correct 171 ms 16000 KB Output is correct

Subtask #4
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 2392 KB Output is correct
2 Correct 497 ms 78676 KB Output is correct
3 Correct 515 ms 78716 KB Output is correct
4 Correct 538 ms 78832 KB Output is correct

Subtask #5
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 2392 KB Output is correct
2 Correct 497 ms 78676 KB Output is correct
3 Correct 515 ms 78716 KB Output is correct
4 Correct 538 ms 78832 KB Output is correct
5 Correct 1 ms 2396 KB Output is correct
6 Correct 488 ms 78716 KB Output is correct
7 Correct 550 ms 78704 KB Output is correct
8 Correct 502 ms 78672 KB Output is correct
9 Correct 579 ms 78556 KB Output is correct

Subtask #6
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 2392 KB Output is correct
2 Correct 497 ms 78676 KB Output is correct
3 Correct 515 ms 78716 KB Output is correct
4 Correct 538 ms 78832 KB Output is correct
5 Correct 1 ms 2396 KB Output is correct
6 Correct 47 ms 12808 KB Output is correct
7 Correct 45 ms 12880 KB Output is correct
8 Correct 46 ms 12880 KB Output is correct
9 Correct 48 ms 12884 KB Output is correct
10 Correct 45 ms 13040 KB Output is correct
11 Correct 46 ms 12960 KB Output is correct
12 Correct 61 ms 12932 KB Output is correct
13 Correct 49 ms 12900 KB Output is correct
14 Correct 45 ms 12892 KB Output is correct
15 Correct 54 ms 12928 KB Output is correct
16 Correct 51 ms 12880 KB Output is correct
17 Correct 55 ms 12880 KB Output is correct
18 Correct 486 ms 78672 KB Output is correct
19 Correct 536 ms 78708 KB Output is correct
20 Correct 589 ms 78928 KB Output is correct
21 Correct 50 ms 12880 KB Output is correct
22 Correct 48 ms 13040 KB Output is correct
23 Correct 85 ms 10868 KB Output is correct

Subtask #7
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 2392 KB Output is correct
2 Correct 53 ms 12924 KB Output is correct
3 Correct 52 ms 12884 KB Output is correct
4 Correct 565 ms 78716 KB Output is correct
5 Correct 53 ms 12880 KB Output is correct
6 Correct 54 ms 13032 KB Output is correct
7 Correct 52 ms 12880 KB Output is correct
8 Correct 52 ms 13032 KB Output is correct
9 Correct 49 ms 12892 KB Output is correct
10 Correct 47 ms 12880 KB Output is correct
11 Correct 48 ms 12928 KB Output is correct
12 Correct 47 ms 12888 KB Output is correct
13 Correct 59 ms 12944 KB Output is correct
14 Correct 601 ms 78928 KB Output is correct
15 Correct 47 ms 13036 KB Output is correct
16 Correct 483 ms 78676 KB Output is correct
17 Correct 486 ms 78716 KB Output is correct
18 Correct 1 ms 2396 KB Output is correct

Subtask #8
30.0 / 30.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 2392 KB Output is correct
2 Correct 5 ms 3164 KB Output is correct
3 Correct 5 ms 3164 KB Output is correct
4 Correct 0 ms 2396 KB Output is correct
5 Correct 1 ms 2396 KB Output is correct
6 Correct 0 ms 2396 KB Output is correct
7 Correct 1 ms 2396 KB Output is correct
8 Correct 1 ms 2396 KB Output is correct
9 Correct 1 ms 2396 KB Output is correct
10 Correct 1 ms 2396 KB Output is correct
11 Correct 1 ms 2392 KB Output is correct
12 Correct 1 ms 2392 KB Output is correct
13 Correct 1 ms 2512 KB Output is correct
14 Correct 1 ms 2396 KB Output is correct
15 Correct 1 ms 2396 KB Output is correct
16 Correct 5 ms 3164 KB Output is correct
17 Correct 50 ms 12884 KB Output is correct
18 Correct 1 ms 2392 KB Output is correct
19 Correct 1 ms 2396 KB Output is correct
20 Correct 1 ms 2396 KB Output is correct
21 Correct 1 ms 2396 KB Output is correct
22 Correct 1 ms 2396 KB Output is correct
23 Correct 1 ms 2396 KB Output is correct
24 Correct 1 ms 2396 KB Output is correct
25 Correct 1 ms 2396 KB Output is correct
26 Correct 1 ms 2396 KB Output is correct
27 Correct 1 ms 2392 KB Output is correct
28 Correct 171 ms 16000 KB Output is correct
29 Correct 1 ms 2392 KB Output is correct
30 Correct 497 ms 78676 KB Output is correct
31 Correct 515 ms 78716 KB Output is correct
32 Correct 538 ms 78832 KB Output is correct
33 Correct 1 ms 2396 KB Output is correct
34 Correct 488 ms 78716 KB Output is correct
35 Correct 550 ms 78704 KB Output is correct
36 Correct 502 ms 78672 KB Output is correct
37 Correct 579 ms 78556 KB Output is correct
38 Correct 1 ms 2396 KB Output is correct
39 Correct 47 ms 12808 KB Output is correct
40 Correct 45 ms 12880 KB Output is correct
41 Correct 46 ms 12880 KB Output is correct
42 Correct 48 ms 12884 KB Output is correct
43 Correct 45 ms 13040 KB Output is correct
44 Correct 46 ms 12960 KB Output is correct
45 Correct 61 ms 12932 KB Output is correct
46 Correct 49 ms 12900 KB Output is correct
47 Correct 45 ms 12892 KB Output is correct
48 Correct 54 ms 12928 KB Output is correct
49 Correct 51 ms 12880 KB Output is correct
50 Correct 55 ms 12880 KB Output is correct
51 Correct 486 ms 78672 KB Output is correct
52 Correct 536 ms 78708 KB Output is correct
53 Correct 589 ms 78928 KB Output is correct
54 Correct 50 ms 12880 KB Output is correct
55 Correct 48 ms 13040 KB Output is correct
56 Correct 85 ms 10868 KB Output is correct
57 Correct 1 ms 2392 KB Output is correct
58 Correct 53 ms 12924 KB Output is correct
59 Correct 52 ms 12884 KB Output is correct
60 Correct 565 ms 78716 KB Output is correct
61 Correct 53 ms 12880 KB Output is correct
62 Correct 54 ms 13032 KB Output is correct
63 Correct 52 ms 12880 KB Output is correct
64 Correct 52 ms 13032 KB Output is correct
65 Correct 49 ms 12892 KB Output is correct
66 Correct 47 ms 12880 KB Output is correct
67 Correct 48 ms 12928 KB Output is correct
68 Correct 47 ms 12888 KB Output is correct
69 Correct 59 ms 12944 KB Output is correct
70 Correct 601 ms 78928 KB Output is correct
71 Correct 47 ms 13036 KB Output is correct
72 Correct 483 ms 78676 KB Output is correct
73 Correct 486 ms 78716 KB Output is correct
74 Correct 1 ms 2396 KB Output is correct
75 Correct 1 ms 2392 KB Output is correct
76 Correct 1 ms 2396 KB Output is correct
77 Correct 1 ms 2496 KB Output is correct
78 Correct 1 ms 2396 KB Output is correct
79 Correct 5 ms 3420 KB Output is correct
80 Correct 610 ms 115796 KB Output is correct
81 Correct 618 ms 115692 KB Output is correct
82 Correct 725 ms 115836 KB Output is correct
83 Correct 710 ms 115920 KB Output is correct
84 Correct 714 ms 115820 KB Output is correct
85 Correct 589 ms 115912 KB Output is correct
86 Correct 80 ms 23156 KB Output is correct
87 Correct 1 ms 2716 KB Output is correct