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Submission #753829

# Submission time Handle Problem Language Result Execution time Memory
753829 2023-06-06T06:55:14 Z bgnbvnbv Strange Device (APIO19_strange_device) C++14
100 / 100
 530 ms 53176 KB 
#include<bits/stdc++.h>
#define TASKNAME "codeforce"
#define pb push_back
#define pli pair<ll,ll>
#define fi first
#define se second
#define fastio ios_base::sync_with_stdio(false); cin.tie(NULL);
using namespace std;
using ll=long long;
const ll maxN=2e5;
const ll inf=3e18;
const ll mod=1e9+7;
ll n,A,B;
vector<pli>vec;
void solve()
{
    cin >> n >> A >> B;
    ll x=(A/__gcd(A,B+1))*B;
    bool ok=true;
    ll sum=0;
    for(int i=1;i<=n;i++)
    {
        ll l,r;
        cin >> l >> r;
        sum+=r-l+1;
        if((r-l+1)>=x)
        {
            ok=false;
        }
        l%=x;
        r%=x;
        if(l<=r)
        {
            vec.pb({l,r});
        }
        else
        {
            vec.pb({l,x-1});
            vec.pb({0,r});
        }
    }
    ll cc=A/(__gcd(A,B+1));
    if(inf/cc<B)
    {
        cout << sum;
        return;
    }
    if(ok==false)
    {
        cout << x;
        return;
    }
    sort(vec.begin(),vec.end());
    ll ans=0;
    for(int i=0;i<vec.size();i++)
    {
        ll j=i+1;
        ll r=vec[i].se;
        while(j<vec.size()&&vec[j].fi<=r)
        {
            r=max(r,vec[j].se);
            j++;
        }
        ans+=r-vec[i].fi+1;
        i=j-1;
    }
    cout << ans;
}
int main()
{
    fastio
    //freopen(TASKNAME".INP","r",stdin);
    //freopen(TASKNAME".OUT","w",stdout);
    solve();
}

Compilation message

strange_device.cpp: In function 'void solve()':
strange_device.cpp:55:18: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<long long int, long long int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   55 |     for(int i=0;i<vec.size();i++)
      |                 ~^~~~~~~~~~~
strange_device.cpp:59:16: warning: comparison of integer expressions of different signedness: 'll' {aka 'long long int'} and 'std::vector<std::pair<long long int, long long int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   59 |         while(j<vec.size()&&vec[j].fi<=r)
      |               ~^~~~~~~~~~~

Subtask #1
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 212 KB Output is correct
2 Correct 5 ms 976 KB Output is correct
3 Correct 5 ms 1064 KB Output is correct
4 Correct 1 ms 212 KB Output is correct
5 Correct 1 ms 212 KB Output is correct
6 Correct 1 ms 212 KB Output is correct
7 Correct 1 ms 316 KB Output is correct
8 Correct 1 ms 316 KB Output is correct
9 Correct 1 ms 212 KB Output is correct
10 Correct 1 ms 212 KB Output is correct
11 Correct 1 ms 212 KB Output is correct
12 Correct 1 ms 312 KB Output is correct
13 Correct 1 ms 212 KB Output is correct
14 Correct 1 ms 212 KB Output is correct
15 Correct 1 ms 324 KB Output is correct
16 Correct 4 ms 1084 KB Output is correct
17 Correct 47 ms 4808 KB Output is correct
18 Correct 1 ms 212 KB Output is correct

Subtask #2
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 212 KB Output is correct
2 Correct 1 ms 212 KB Output is correct
3 Correct 0 ms 212 KB Output is correct
4 Correct 1 ms 212 KB Output is correct
5 Correct 1 ms 212 KB Output is correct

Subtask #3
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 324 KB Output is correct
2 Correct 1 ms 340 KB Output is correct
3 Correct 1 ms 340 KB Output is correct
4 Correct 1 ms 328 KB Output is correct
5 Correct 318 ms 17448 KB Output is correct

Subtask #4
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 212 KB Output is correct
2 Correct 403 ms 16860 KB Output is correct
3 Correct 403 ms 16940 KB Output is correct
4 Correct 446 ms 20704 KB Output is correct

Subtask #5
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 212 KB Output is correct
2 Correct 403 ms 16860 KB Output is correct
3 Correct 403 ms 16940 KB Output is correct
4 Correct 446 ms 20704 KB Output is correct
5 Correct 1 ms 212 KB Output is correct
6 Correct 409 ms 20192 KB Output is correct
7 Correct 423 ms 19884 KB Output is correct
8 Correct 409 ms 20108 KB Output is correct
9 Correct 423 ms 19916 KB Output is correct

Subtask #6
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 212 KB Output is correct
2 Correct 403 ms 16860 KB Output is correct
3 Correct 403 ms 16940 KB Output is correct
4 Correct 446 ms 20704 KB Output is correct
5 Correct 1 ms 212 KB Output is correct
6 Correct 41 ms 4276 KB Output is correct
7 Correct 41 ms 4208 KB Output is correct
8 Correct 45 ms 4288 KB Output is correct
9 Correct 49 ms 4284 KB Output is correct
10 Correct 42 ms 4296 KB Output is correct
11 Correct 42 ms 4204 KB Output is correct
12 Correct 43 ms 4168 KB Output is correct
13 Correct 43 ms 4224 KB Output is correct
14 Correct 44 ms 4232 KB Output is correct
15 Correct 48 ms 4268 KB Output is correct
16 Correct 42 ms 4048 KB Output is correct
17 Correct 42 ms 4184 KB Output is correct
18 Correct 462 ms 19228 KB Output is correct
19 Correct 403 ms 19132 KB Output is correct
20 Correct 425 ms 18136 KB Output is correct
21 Correct 55 ms 3784 KB Output is correct
22 Correct 50 ms 3656 KB Output is correct
23 Correct 127 ms 9660 KB Output is correct

Subtask #7
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 212 KB Output is correct
2 Correct 44 ms 3556 KB Output is correct
3 Correct 42 ms 3616 KB Output is correct
4 Correct 458 ms 18048 KB Output is correct
5 Correct 41 ms 3528 KB Output is correct
6 Correct 42 ms 3608 KB Output is correct
7 Correct 47 ms 3712 KB Output is correct
8 Correct 56 ms 3592 KB Output is correct
9 Correct 54 ms 3644 KB Output is correct
10 Correct 44 ms 3636 KB Output is correct
11 Correct 46 ms 3520 KB Output is correct
12 Correct 40 ms 3528 KB Output is correct
13 Correct 44 ms 3472 KB Output is correct
14 Correct 443 ms 17916 KB Output is correct
15 Correct 46 ms 3524 KB Output is correct
16 Correct 403 ms 18004 KB Output is correct
17 Correct 440 ms 17740 KB Output is correct
18 Correct 1 ms 212 KB Output is correct

Subtask #8
30.0 / 30.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 212 KB Output is correct
2 Correct 5 ms 976 KB Output is correct
3 Correct 5 ms 1064 KB Output is correct
4 Correct 1 ms 212 KB Output is correct
5 Correct 1 ms 212 KB Output is correct
6 Correct 1 ms 212 KB Output is correct
7 Correct 1 ms 316 KB Output is correct
8 Correct 1 ms 316 KB Output is correct
9 Correct 1 ms 212 KB Output is correct
10 Correct 1 ms 212 KB Output is correct
11 Correct 1 ms 212 KB Output is correct
12 Correct 1 ms 312 KB Output is correct
13 Correct 1 ms 212 KB Output is correct
14 Correct 1 ms 212 KB Output is correct
15 Correct 1 ms 324 KB Output is correct
16 Correct 4 ms 1084 KB Output is correct
17 Correct 47 ms 4808 KB Output is correct
18 Correct 1 ms 212 KB Output is correct
19 Correct 1 ms 212 KB Output is correct
20 Correct 1 ms 212 KB Output is correct
21 Correct 0 ms 212 KB Output is correct
22 Correct 1 ms 212 KB Output is correct
23 Correct 1 ms 212 KB Output is correct
24 Correct 1 ms 324 KB Output is correct
25 Correct 1 ms 340 KB Output is correct
26 Correct 1 ms 340 KB Output is correct
27 Correct 1 ms 328 KB Output is correct
28 Correct 318 ms 17448 KB Output is correct
29 Correct 1 ms 212 KB Output is correct
30 Correct 403 ms 16860 KB Output is correct
31 Correct 403 ms 16940 KB Output is correct
32 Correct 446 ms 20704 KB Output is correct
33 Correct 1 ms 212 KB Output is correct
34 Correct 409 ms 20192 KB Output is correct
35 Correct 423 ms 19884 KB Output is correct
36 Correct 409 ms 20108 KB Output is correct
37 Correct 423 ms 19916 KB Output is correct
38 Correct 1 ms 212 KB Output is correct
39 Correct 41 ms 4276 KB Output is correct
40 Correct 41 ms 4208 KB Output is correct
41 Correct 45 ms 4288 KB Output is correct
42 Correct 49 ms 4284 KB Output is correct
43 Correct 42 ms 4296 KB Output is correct
44 Correct 42 ms 4204 KB Output is correct
45 Correct 43 ms 4168 KB Output is correct
46 Correct 43 ms 4224 KB Output is correct
47 Correct 44 ms 4232 KB Output is correct
48 Correct 48 ms 4268 KB Output is correct
49 Correct 42 ms 4048 KB Output is correct
50 Correct 42 ms 4184 KB Output is correct
51 Correct 462 ms 19228 KB Output is correct
52 Correct 403 ms 19132 KB Output is correct
53 Correct 425 ms 18136 KB Output is correct
54 Correct 55 ms 3784 KB Output is correct
55 Correct 50 ms 3656 KB Output is correct
56 Correct 127 ms 9660 KB Output is correct
57 Correct 1 ms 212 KB Output is correct
58 Correct 44 ms 3556 KB Output is correct
59 Correct 42 ms 3616 KB Output is correct
60 Correct 458 ms 18048 KB Output is correct
61 Correct 41 ms 3528 KB Output is correct
62 Correct 42 ms 3608 KB Output is correct
63 Correct 47 ms 3712 KB Output is correct
64 Correct 56 ms 3592 KB Output is correct
65 Correct 54 ms 3644 KB Output is correct
66 Correct 44 ms 3636 KB Output is correct
67 Correct 46 ms 3520 KB Output is correct
68 Correct 40 ms 3528 KB Output is correct
69 Correct 44 ms 3472 KB Output is correct
70 Correct 443 ms 17916 KB Output is correct
71 Correct 46 ms 3524 KB Output is correct
72 Correct 403 ms 18004 KB Output is correct
73 Correct 440 ms 17740 KB Output is correct
74 Correct 1 ms 212 KB Output is correct
75 Correct 1 ms 212 KB Output is correct
76 Correct 1 ms 212 KB Output is correct
77 Correct 0 ms 212 KB Output is correct
78 Correct 1 ms 320 KB Output is correct
79 Correct 4 ms 972 KB Output is correct
80 Correct 530 ms 44296 KB Output is correct
81 Correct 517 ms 44548 KB Output is correct
82 Correct 482 ms 44452 KB Output is correct
83 Correct 494 ms 44688 KB Output is correct
84 Correct 469 ms 44760 KB Output is correct
85 Correct 527 ms 53176 KB Output is correct
86 Correct 139 ms 18412 KB Output is correct
87 Correct 1 ms 212 KB Output is correct