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Submission #744137

# Submission time Handle Problem Language Result Execution time Memory
744137 2023-05-18T08:31:35 Z Kenjikrab Strange Device (APIO19_strange_device) C++14
100 / 100
 578 ms 52808 KB 
#include<bits/stdc++.h>
#define int long long
#define pii pair<int,int>
#define fi first
#define se second
#define db double
using namespace std;
int const n_max=1e6+10;
int gcd(int a,int b)
{
    if(b%a==0)return a;
    return gcd(b%a,a);
}
int st[n_max];
int en[n_max];
signed main()
{
    cin.tie(nullptr)->sync_with_stdio(false);
    int n,A,B;
    cin>>n>>A>>B;
    int h=gcd(min(A,B+1),max(A,B+1));
    int sum=0;
    for(int i=0;i<n;i++)
    {
        cin>>st[i]>>en[i];
        sum+=en[i]-st[i]+1;
    }
    int val=A/h;
    if((db) en[n-1]/val<= (db) B)
    {
        cout<<sum;
        return 0;
    }
    val*=B;
    vector<pii> keep;
    for(int i=0;i<n;i++)
    {
        if(en[i]-st[i]+1>=val)
        {
            cout<<val;
            return 0;
        }
        st[i]%=val;
        en[i]%=val;
        if(en[i]>=st[i])
        {
            keep.push_back({st[i],en[i]});
        }
        else
        {
            keep.push_back({st[i],val-1});
            keep.push_back({0,en[i]});
        }
    }
    sort(keep.begin(),keep.end());
    sum=0;
    int maxi=-1;
    for(int i=0;i<keep.size();i++)
    {
        int u=keep[i].fi;
        int v=keep[i].se;
        if(v<=maxi)continue;
        sum+=v-max(u,maxi+1)+1;
        maxi=max(v,maxi);
    }
    cout<<sum;
    return 0;
}

Compilation message

strange_device.cpp: In function 'int main()':
strange_device.cpp:58:18: 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]
   58 |     for(int i=0;i<keep.size();i++)
      |                 ~^~~~~~~~~~~~

Subtask #1
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 340 KB Output is correct
2 Correct 6 ms 1236 KB Output is correct
3 Correct 5 ms 1236 KB Output is correct
4 Correct 1 ms 340 KB Output is correct
5 Correct 1 ms 332 KB Output is correct
6 Correct 1 ms 212 KB Output is correct
7 Correct 1 ms 340 KB Output is correct
8 Correct 1 ms 332 KB Output is correct
9 Correct 1 ms 340 KB Output is correct
10 Correct 1 ms 212 KB Output is correct
11 Correct 0 ms 340 KB Output is correct
12 Correct 1 ms 212 KB Output is correct
13 Correct 1 ms 212 KB Output is correct
14 Correct 1 ms 324 KB Output is correct
15 Correct 1 ms 340 KB Output is correct
16 Correct 5 ms 1236 KB Output is correct
17 Correct 46 ms 7844 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 1 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 340 KB Output is correct
2 Correct 1 ms 416 KB Output is correct
3 Correct 1 ms 336 KB Output is correct
4 Correct 1 ms 340 KB Output is correct
5 Correct 343 ms 34464 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 499 ms 52808 KB Output is correct
3 Correct 420 ms 34512 KB Output is correct
4 Correct 426 ms 46804 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 499 ms 52808 KB Output is correct
3 Correct 420 ms 34512 KB Output is correct
4 Correct 426 ms 46804 KB Output is correct
5 Correct 1 ms 212 KB Output is correct
6 Correct 426 ms 46724 KB Output is correct
7 Correct 432 ms 46240 KB Output is correct
8 Correct 436 ms 46656 KB Output is correct
9 Correct 435 ms 46144 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 499 ms 52808 KB Output is correct
3 Correct 420 ms 34512 KB Output is correct
4 Correct 426 ms 46804 KB Output is correct
5 Correct 1 ms 212 KB Output is correct
6 Correct 56 ms 7720 KB Output is correct
7 Correct 44 ms 7728 KB Output is correct
8 Correct 44 ms 7680 KB Output is correct
9 Correct 54 ms 7752 KB Output is correct
10 Correct 43 ms 7732 KB Output is correct
11 Correct 45 ms 7784 KB Output is correct
12 Correct 41 ms 7788 KB Output is correct
13 Correct 45 ms 7780 KB Output is correct
14 Correct 42 ms 7800 KB Output is correct
15 Correct 46 ms 7756 KB Output is correct
16 Correct 48 ms 7752 KB Output is correct
17 Correct 42 ms 7912 KB Output is correct
18 Correct 470 ms 46736 KB Output is correct
19 Correct 445 ms 46760 KB Output is correct
20 Correct 468 ms 46612 KB Output is correct
21 Correct 45 ms 7720 KB Output is correct
22 Correct 39 ms 7728 KB Output is correct
23 Correct 142 ms 26604 KB Output is correct

Subtask #7
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 340 KB Output is correct
2 Correct 44 ms 7744 KB Output is correct
3 Correct 45 ms 7764 KB Output is correct
4 Correct 518 ms 45148 KB Output is correct
5 Correct 49 ms 7772 KB Output is correct
6 Correct 57 ms 7752 KB Output is correct
7 Correct 48 ms 7688 KB Output is correct
8 Correct 54 ms 7752 KB Output is correct
9 Correct 46 ms 7712 KB Output is correct
10 Correct 47 ms 7732 KB Output is correct
11 Correct 44 ms 7788 KB Output is correct
12 Correct 38 ms 7704 KB Output is correct
13 Correct 44 ms 7736 KB Output is correct
14 Correct 501 ms 45156 KB Output is correct
15 Correct 62 ms 7792 KB Output is correct
16 Correct 470 ms 46564 KB Output is correct
17 Correct 436 ms 46576 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 340 KB Output is correct
2 Correct 6 ms 1236 KB Output is correct
3 Correct 5 ms 1236 KB Output is correct
4 Correct 1 ms 340 KB Output is correct
5 Correct 1 ms 332 KB Output is correct
6 Correct 1 ms 212 KB Output is correct
7 Correct 1 ms 340 KB Output is correct
8 Correct 1 ms 332 KB Output is correct
9 Correct 1 ms 340 KB Output is correct
10 Correct 1 ms 212 KB Output is correct
11 Correct 0 ms 340 KB Output is correct
12 Correct 1 ms 212 KB Output is correct
13 Correct 1 ms 212 KB Output is correct
14 Correct 1 ms 324 KB Output is correct
15 Correct 1 ms 340 KB Output is correct
16 Correct 5 ms 1236 KB Output is correct
17 Correct 46 ms 7844 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 1 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 340 KB Output is correct
25 Correct 1 ms 416 KB Output is correct
26 Correct 1 ms 336 KB Output is correct
27 Correct 1 ms 340 KB Output is correct
28 Correct 343 ms 34464 KB Output is correct
29 Correct 1 ms 212 KB Output is correct
30 Correct 499 ms 52808 KB Output is correct
31 Correct 420 ms 34512 KB Output is correct
32 Correct 426 ms 46804 KB Output is correct
33 Correct 1 ms 212 KB Output is correct
34 Correct 426 ms 46724 KB Output is correct
35 Correct 432 ms 46240 KB Output is correct
36 Correct 436 ms 46656 KB Output is correct
37 Correct 435 ms 46144 KB Output is correct
38 Correct 1 ms 212 KB Output is correct
39 Correct 56 ms 7720 KB Output is correct
40 Correct 44 ms 7728 KB Output is correct
41 Correct 44 ms 7680 KB Output is correct
42 Correct 54 ms 7752 KB Output is correct
43 Correct 43 ms 7732 KB Output is correct
44 Correct 45 ms 7784 KB Output is correct
45 Correct 41 ms 7788 KB Output is correct
46 Correct 45 ms 7780 KB Output is correct
47 Correct 42 ms 7800 KB Output is correct
48 Correct 46 ms 7756 KB Output is correct
49 Correct 48 ms 7752 KB Output is correct
50 Correct 42 ms 7912 KB Output is correct
51 Correct 470 ms 46736 KB Output is correct
52 Correct 445 ms 46760 KB Output is correct
53 Correct 468 ms 46612 KB Output is correct
54 Correct 45 ms 7720 KB Output is correct
55 Correct 39 ms 7728 KB Output is correct
56 Correct 142 ms 26604 KB Output is correct
57 Correct 1 ms 340 KB Output is correct
58 Correct 44 ms 7744 KB Output is correct
59 Correct 45 ms 7764 KB Output is correct
60 Correct 518 ms 45148 KB Output is correct
61 Correct 49 ms 7772 KB Output is correct
62 Correct 57 ms 7752 KB Output is correct
63 Correct 48 ms 7688 KB Output is correct
64 Correct 54 ms 7752 KB Output is correct
65 Correct 46 ms 7712 KB Output is correct
66 Correct 47 ms 7732 KB Output is correct
67 Correct 44 ms 7788 KB Output is correct
68 Correct 38 ms 7704 KB Output is correct
69 Correct 44 ms 7736 KB Output is correct
70 Correct 501 ms 45156 KB Output is correct
71 Correct 62 ms 7792 KB Output is correct
72 Correct 470 ms 46564 KB Output is correct
73 Correct 436 ms 46576 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 332 KB Output is correct
77 Correct 1 ms 328 KB Output is correct
78 Correct 1 ms 212 KB Output is correct
79 Correct 8 ms 1260 KB Output is correct
80 Correct 578 ms 46600 KB Output is correct
81 Correct 560 ms 46612 KB Output is correct
82 Correct 531 ms 46720 KB Output is correct
83 Correct 495 ms 46596 KB Output is correct
84 Correct 515 ms 46584 KB Output is correct
85 Correct 499 ms 46724 KB Output is correct
86 Correct 151 ms 26456 KB Output is correct
87 Correct 1 ms 328 KB Output is correct