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Submission #933754

# Submission time Handle Problem Language Result Execution time Memory
933754 2024-02-26T09:04:24 Z irmuun Strange Device (APIO19_strange_device) C++17
100 / 100
 418 ms 71472 KB 
#include<bits/stdc++.h>
 
using namespace std;
 
#define ll long long
#define pb push_back
#define ff first
#define ss second
#define all(s) s.begin(),s.end()
#define rall(s) s.rbegin(),s.rend()

int main(){
    ios_base::sync_with_stdio(false); cin.tie(0); cout.tie(0);
    ll n,a,b;
    cin>>n>>a>>b;
    ll l[n+5],r[n+5];
    ll g=a/gcd((b+1)%a,a),MX=1e18+1;
    if(MX/b>=g){
        g=g*b;
    }
    else{
        g=MX;
    }
    for(ll i=1;i<=n;i++){
        cin>>l[i]>>r[i];
    }
    vector<pair<ll,ll>>v;
    for(ll i=1;i<=n;i++){
        if(r[i]-l[i]+1>=g){
            cout<<g;
            return 0;
        }
        ll L=l[i]%g,R=r[i]%g;
        if(L<=R){
            v.pb({L,R});
        }
        else{
            v.pb({0,R});
            v.pb({L,g-1});
        }
    }
    sort(all(v));
    ll ans=0;
    for(ll i=0;i<v.size();){
        ll nxt=i,curR=v[i].ss;
        while(nxt+1<v.size()&&v[nxt+1].ff<=curR){
            nxt++;
            curR=max(curR,v[nxt].ss);
        }
        ans+=curR-v[i].ff+1;
        i=nxt+1;
    }
    cout<<ans;
}

Compilation message

strange_device.cpp: In function 'int main()':
strange_device.cpp:44:17: warning: comparison of integer expressions of different signedness: 'long long int' and 'std::vector<std::pair<long long int, long long int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   44 |     for(ll i=0;i<v.size();){
      |                ~^~~~~~~~~
strange_device.cpp:46:20: warning: comparison of integer expressions of different signedness: 'long long int' and 'std::vector<std::pair<long long int, long long int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   46 |         while(nxt+1<v.size()&&v[nxt+1].ff<=curR){
      |               ~~~~~^~~~~~~~~

Subtask #1
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 348 KB Output is correct
2 Correct 3 ms 860 KB Output is correct
3 Correct 5 ms 860 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 348 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 344 KB Output is correct
15 Correct 0 ms 348 KB Output is correct
16 Correct 3 ms 860 KB Output is correct
17 Correct 38 ms 4044 KB Output is correct
18 Correct 0 ms 348 KB Output is correct

Subtask #2
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 344 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 0 ms 348 KB Output is correct

Subtask #3
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 348 KB Output is correct
2 Correct 1 ms 348 KB Output is correct
3 Correct 1 ms 600 KB Output is correct
4 Correct 1 ms 348 KB Output is correct
5 Correct 217 ms 34268 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 314 ms 34392 KB Output is correct
3 Correct 305 ms 69928 KB Output is correct
4 Correct 307 ms 71340 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 314 ms 34392 KB Output is correct
3 Correct 305 ms 69928 KB Output is correct
4 Correct 307 ms 71340 KB Output is correct
5 Correct 0 ms 344 KB Output is correct
6 Correct 308 ms 71224 KB Output is correct
7 Correct 329 ms 70832 KB Output is correct
8 Correct 322 ms 71348 KB Output is correct
9 Correct 360 ms 69944 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 314 ms 34392 KB Output is correct
3 Correct 305 ms 69928 KB Output is correct
4 Correct 307 ms 71340 KB Output is correct
5 Correct 1 ms 344 KB Output is correct
6 Correct 35 ms 7876 KB Output is correct
7 Correct 35 ms 7864 KB Output is correct
8 Correct 31 ms 7884 KB Output is correct
9 Correct 36 ms 7748 KB Output is correct
10 Correct 33 ms 7884 KB Output is correct
11 Correct 34 ms 7896 KB Output is correct
12 Correct 31 ms 7744 KB Output is correct
13 Correct 36 ms 7884 KB Output is correct
14 Correct 32 ms 7888 KB Output is correct
15 Correct 37 ms 7752 KB Output is correct
16 Correct 39 ms 7732 KB Output is correct
17 Correct 34 ms 7884 KB Output is correct
18 Correct 343 ms 69932 KB Output is correct
19 Correct 322 ms 70968 KB Output is correct
20 Correct 357 ms 70452 KB Output is correct
21 Correct 38 ms 7708 KB Output is correct
22 Correct 30 ms 7888 KB Output is correct
23 Correct 93 ms 28520 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 33 ms 4056 KB Output is correct
3 Correct 34 ms 7896 KB Output is correct
4 Correct 391 ms 70452 KB Output is correct
5 Correct 34 ms 7896 KB Output is correct
6 Correct 37 ms 7748 KB Output is correct
7 Correct 39 ms 8004 KB Output is correct
8 Correct 35 ms 7888 KB Output is correct
9 Correct 33 ms 7884 KB Output is correct
10 Correct 34 ms 7752 KB Output is correct
11 Correct 38 ms 7748 KB Output is correct
12 Correct 29 ms 7928 KB Output is correct
13 Correct 38 ms 7896 KB Output is correct
14 Correct 353 ms 70208 KB Output is correct
15 Correct 38 ms 7884 KB Output is correct
16 Correct 418 ms 71352 KB Output is correct
17 Correct 307 ms 70836 KB Output is correct
18 Correct 1 ms 348 KB Output is correct

Subtask #8
30.0 / 30.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 348 KB Output is correct
2 Correct 3 ms 860 KB Output is correct
3 Correct 5 ms 860 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 348 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 344 KB Output is correct
15 Correct 0 ms 348 KB Output is correct
16 Correct 3 ms 860 KB Output is correct
17 Correct 38 ms 4044 KB Output is correct
18 Correct 0 ms 348 KB Output is correct
19 Correct 0 ms 344 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 0 ms 348 KB Output is correct
24 Correct 1 ms 348 KB Output is correct
25 Correct 1 ms 348 KB Output is correct
26 Correct 1 ms 600 KB Output is correct
27 Correct 1 ms 348 KB Output is correct
28 Correct 217 ms 34268 KB Output is correct
29 Correct 0 ms 348 KB Output is correct
30 Correct 314 ms 34392 KB Output is correct
31 Correct 305 ms 69928 KB Output is correct
32 Correct 307 ms 71340 KB Output is correct
33 Correct 0 ms 344 KB Output is correct
34 Correct 308 ms 71224 KB Output is correct
35 Correct 329 ms 70832 KB Output is correct
36 Correct 322 ms 71348 KB Output is correct
37 Correct 360 ms 69944 KB Output is correct
38 Correct 1 ms 344 KB Output is correct
39 Correct 35 ms 7876 KB Output is correct
40 Correct 35 ms 7864 KB Output is correct
41 Correct 31 ms 7884 KB Output is correct
42 Correct 36 ms 7748 KB Output is correct
43 Correct 33 ms 7884 KB Output is correct
44 Correct 34 ms 7896 KB Output is correct
45 Correct 31 ms 7744 KB Output is correct
46 Correct 36 ms 7884 KB Output is correct
47 Correct 32 ms 7888 KB Output is correct
48 Correct 37 ms 7752 KB Output is correct
49 Correct 39 ms 7732 KB Output is correct
50 Correct 34 ms 7884 KB Output is correct
51 Correct 343 ms 69932 KB Output is correct
52 Correct 322 ms 70968 KB Output is correct
53 Correct 357 ms 70452 KB Output is correct
54 Correct 38 ms 7708 KB Output is correct
55 Correct 30 ms 7888 KB Output is correct
56 Correct 93 ms 28520 KB Output is correct
57 Correct 0 ms 344 KB Output is correct
58 Correct 33 ms 4056 KB Output is correct
59 Correct 34 ms 7896 KB Output is correct
60 Correct 391 ms 70452 KB Output is correct
61 Correct 34 ms 7896 KB Output is correct
62 Correct 37 ms 7748 KB Output is correct
63 Correct 39 ms 8004 KB Output is correct
64 Correct 35 ms 7888 KB Output is correct
65 Correct 33 ms 7884 KB Output is correct
66 Correct 34 ms 7752 KB Output is correct
67 Correct 38 ms 7748 KB Output is correct
68 Correct 29 ms 7928 KB Output is correct
69 Correct 38 ms 7896 KB Output is correct
70 Correct 353 ms 70208 KB Output is correct
71 Correct 38 ms 7884 KB Output is correct
72 Correct 418 ms 71352 KB Output is correct
73 Correct 307 ms 70836 KB Output is correct
74 Correct 1 ms 348 KB Output is correct
75 Correct 0 ms 348 KB Output is correct
76 Correct 0 ms 348 KB Output is correct
77 Correct 0 ms 348 KB Output is correct
78 Correct 0 ms 348 KB Output is correct
79 Correct 4 ms 1372 KB Output is correct
80 Correct 372 ms 71352 KB Output is correct
81 Correct 413 ms 70456 KB Output is correct
82 Correct 341 ms 70840 KB Output is correct
83 Correct 347 ms 71472 KB Output is correct
84 Correct 351 ms 69812 KB Output is correct
85 Correct 362 ms 71272 KB Output is correct
86 Correct 93 ms 26840 KB Output is correct
87 Correct 0 ms 344 KB Output is correct