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Submission #1057631

# Submission time Handle Problem Language Result Execution time Memory
1057631 2024-08-14T02:07:07 Z DucNguyen2007 Strange Device (APIO19_strange_device) C++14
100 / 100
 377 ms 115960 KB 
#include<bits/stdc++.h>
using namespace std;
#define ll long long
#define ld long double
#define pii pair<int,int>
#define pll pair<ll,ll>
#define fi first
#define se second
const int maxN=1e6+5;
const ll inf=2e18;
int n;
ll a,b;
pll p[maxN+1];
set<pll> se;
int main()
{
    //freopen("","r",stdin);
    //freopen("","w",stdout);
    ios_base::sync_with_stdio(0);
    cin.tie(0);
    cout.tie(0);
    cin>>n>>a>>b;
    for(int i=1;i<=n;i++)
    {
        cin>>p[i].fi>>p[i].se;
    }
    ll x=inf,d=__gcd(a,b+1);
    if((ld)1.0*inf/b<a/d)
    {
        x=inf;
    }
    else x=b*(a/d);
    for(int i=1;i<=n;i++)
    {
        if(p[i].se-p[i].fi+1>=x)
        {
            cout<<x;
            return 0;
        }
        ll lmod=p[i].fi%x,rmod=p[i].se%x;
        if(lmod>rmod)
        {
            se.insert({lmod,x-1});
            se.insert({0,rmod});
        }
        else se.insert({lmod,rmod});
    }
    ll ans=0,mx=-1;
    for(auto i:se)
    {
        ans+=max(0ll,i.se-max(mx+1,i.fi)+1);
        mx=max(mx,i.se);
    }
    cout<<ans;
}

Subtask #1
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 348 KB Output is correct
2 Correct 3 ms 1372 KB Output is correct
3 Correct 3 ms 1372 KB Output is correct
4 Correct 0 ms 348 KB Output is correct
5 Correct 0 ms 348 KB Output is correct
6 Correct 0 ms 348 KB Output is correct
7 Correct 0 ms 348 KB Output is correct
8 Correct 0 ms 348 KB Output is correct
9 Correct 0 ms 348 KB Output is correct
10 Correct 0 ms 468 KB Output is correct
11 Correct 0 ms 348 KB Output is correct
12 Correct 0 ms 348 KB Output is correct
13 Correct 0 ms 348 KB Output is correct
14 Correct 0 ms 348 KB Output is correct
15 Correct 0 ms 348 KB Output is correct
16 Correct 3 ms 1372 KB Output is correct
17 Correct 30 ms 12540 KB Output is correct
18 Correct 1 ms 344 KB Output is correct

Subtask #2
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 600 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 0 ms 348 KB Output is correct
5 Correct 1 ms 344 KB Output is correct

Subtask #3
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 348 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 1 ms 348 KB Output is correct
4 Correct 0 ms 348 KB Output is correct
5 Correct 132 ms 41076 KB Output is correct

Subtask #4
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 348 KB Output is correct
2 Correct 316 ms 115764 KB Output is correct
3 Correct 377 ms 115816 KB Output is correct
4 Correct 352 ms 115804 KB Output is correct

Subtask #5
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 348 KB Output is correct
2 Correct 316 ms 115764 KB Output is correct
3 Correct 377 ms 115816 KB Output is correct
4 Correct 352 ms 115804 KB Output is correct
5 Correct 0 ms 348 KB Output is correct
6 Correct 324 ms 115812 KB Output is correct
7 Correct 330 ms 115792 KB Output is correct
8 Correct 338 ms 115944 KB Output is correct
9 Correct 354 ms 115796 KB Output is correct

Subtask #6
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 348 KB Output is correct
2 Correct 316 ms 115764 KB Output is correct
3 Correct 377 ms 115816 KB Output is correct
4 Correct 352 ms 115804 KB Output is correct
5 Correct 0 ms 344 KB Output is correct
6 Correct 27 ms 12520 KB Output is correct
7 Correct 36 ms 12624 KB Output is correct
8 Correct 27 ms 12624 KB Output is correct
9 Correct 30 ms 12644 KB Output is correct
10 Correct 28 ms 12624 KB Output is correct
11 Correct 28 ms 12516 KB Output is correct
12 Correct 30 ms 12596 KB Output is correct
13 Correct 31 ms 12880 KB Output is correct
14 Correct 30 ms 12524 KB Output is correct
15 Correct 33 ms 12628 KB Output is correct
16 Correct 37 ms 12520 KB Output is correct
17 Correct 34 ms 12648 KB Output is correct
18 Correct 331 ms 115692 KB Output is correct
19 Correct 331 ms 115812 KB Output is correct
20 Correct 350 ms 115696 KB Output is correct
21 Correct 30 ms 12648 KB Output is correct
22 Correct 29 ms 12632 KB Output is correct
23 Correct 59 ms 19280 KB Output is correct

Subtask #7
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 344 KB Output is correct
2 Correct 31 ms 12600 KB Output is correct
3 Correct 31 ms 12576 KB Output is correct
4 Correct 370 ms 115860 KB Output is correct
5 Correct 33 ms 12624 KB Output is correct
6 Correct 32 ms 12520 KB Output is correct
7 Correct 32 ms 12628 KB Output is correct
8 Correct 30 ms 12628 KB Output is correct
9 Correct 31 ms 12624 KB Output is correct
10 Correct 28 ms 12624 KB Output is correct
11 Correct 30 ms 12628 KB Output is correct
12 Correct 30 ms 12624 KB Output is correct
13 Correct 30 ms 12552 KB Output is correct
14 Correct 361 ms 115792 KB Output is correct
15 Correct 27 ms 12632 KB Output is correct
16 Correct 329 ms 115832 KB Output is correct
17 Correct 322 ms 115792 KB Output is correct
18 Correct 0 ms 344 KB Output is correct

Subtask #8
30.0 / 30.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 348 KB Output is correct
2 Correct 3 ms 1372 KB Output is correct
3 Correct 3 ms 1372 KB Output is correct
4 Correct 0 ms 348 KB Output is correct
5 Correct 0 ms 348 KB Output is correct
6 Correct 0 ms 348 KB Output is correct
7 Correct 0 ms 348 KB Output is correct
8 Correct 0 ms 348 KB Output is correct
9 Correct 0 ms 348 KB Output is correct
10 Correct 0 ms 468 KB Output is correct
11 Correct 0 ms 348 KB Output is correct
12 Correct 0 ms 348 KB Output is correct
13 Correct 0 ms 348 KB Output is correct
14 Correct 0 ms 348 KB Output is correct
15 Correct 0 ms 348 KB Output is correct
16 Correct 3 ms 1372 KB Output is correct
17 Correct 30 ms 12540 KB Output is correct
18 Correct 1 ms 344 KB Output is correct
19 Correct 0 ms 600 KB Output is correct
20 Correct 0 ms 348 KB Output is correct
21 Correct 0 ms 348 KB Output is correct
22 Correct 0 ms 348 KB Output is correct
23 Correct 1 ms 344 KB Output is correct
24 Correct 0 ms 348 KB Output is correct
25 Correct 0 ms 348 KB Output is correct
26 Correct 1 ms 348 KB Output is correct
27 Correct 0 ms 348 KB Output is correct
28 Correct 132 ms 41076 KB Output is correct
29 Correct 0 ms 348 KB Output is correct
30 Correct 316 ms 115764 KB Output is correct
31 Correct 377 ms 115816 KB Output is correct
32 Correct 352 ms 115804 KB Output is correct
33 Correct 0 ms 348 KB Output is correct
34 Correct 324 ms 115812 KB Output is correct
35 Correct 330 ms 115792 KB Output is correct
36 Correct 338 ms 115944 KB Output is correct
37 Correct 354 ms 115796 KB Output is correct
38 Correct 0 ms 344 KB Output is correct
39 Correct 27 ms 12520 KB Output is correct
40 Correct 36 ms 12624 KB Output is correct
41 Correct 27 ms 12624 KB Output is correct
42 Correct 30 ms 12644 KB Output is correct
43 Correct 28 ms 12624 KB Output is correct
44 Correct 28 ms 12516 KB Output is correct
45 Correct 30 ms 12596 KB Output is correct
46 Correct 31 ms 12880 KB Output is correct
47 Correct 30 ms 12524 KB Output is correct
48 Correct 33 ms 12628 KB Output is correct
49 Correct 37 ms 12520 KB Output is correct
50 Correct 34 ms 12648 KB Output is correct
51 Correct 331 ms 115692 KB Output is correct
52 Correct 331 ms 115812 KB Output is correct
53 Correct 350 ms 115696 KB Output is correct
54 Correct 30 ms 12648 KB Output is correct
55 Correct 29 ms 12632 KB Output is correct
56 Correct 59 ms 19280 KB Output is correct
57 Correct 0 ms 344 KB Output is correct
58 Correct 31 ms 12600 KB Output is correct
59 Correct 31 ms 12576 KB Output is correct
60 Correct 370 ms 115860 KB Output is correct
61 Correct 33 ms 12624 KB Output is correct
62 Correct 32 ms 12520 KB Output is correct
63 Correct 32 ms 12628 KB Output is correct
64 Correct 30 ms 12628 KB Output is correct
65 Correct 31 ms 12624 KB Output is correct
66 Correct 28 ms 12624 KB Output is correct
67 Correct 30 ms 12628 KB Output is correct
68 Correct 30 ms 12624 KB Output is correct
69 Correct 30 ms 12552 KB Output is correct
70 Correct 361 ms 115792 KB Output is correct
71 Correct 27 ms 12632 KB Output is correct
72 Correct 329 ms 115832 KB Output is correct
73 Correct 322 ms 115792 KB Output is correct
74 Correct 0 ms 344 KB Output is correct
75 Correct 0 ms 348 KB Output is correct
76 Correct 0 ms 604 KB Output is correct
77 Correct 0 ms 348 KB Output is correct
78 Correct 0 ms 348 KB Output is correct
79 Correct 3 ms 1372 KB Output is correct
80 Correct 361 ms 115692 KB Output is correct
81 Correct 354 ms 115960 KB Output is correct
82 Correct 371 ms 115792 KB Output is correct
83 Correct 363 ms 115768 KB Output is correct
84 Correct 368 ms 115808 KB Output is correct
85 Correct 358 ms 115848 KB Output is correct
86 Correct 58 ms 19284 KB Output is correct
87 Correct 0 ms 468 KB Output is correct