Submission #252087

#	Submission time	Handle	Problem	Language	Result	Execution time	Memory
252087	2020-07-24T06:11:48 Z	jeqcho	Strange Device (APIO19_strange_device)	C++17	100 / 100	587 ms	16760 KB

strange_device

#include<bits/stdc++.h>
#define ll long long
#define N 1000005
 
using namespace std;
inline ll Get() {ll x=0,f=1;char ch=getchar();while(ch<'0'||ch>'9') {if(ch=='-') f=-1;ch=getchar();}while('0'<=ch&&ch<='9') {x=(x<<1)+(x<<3)+ch-'0';ch=getchar();}return x*f;}
 
int n;
ll A,B,len;
struct node {
    ll l,r;
    bool operator <(const node &a)const {
        if(l!=a.l) return l<a.l;
        return r<a.r;
    }
}s[N<<1];
ll gcd(ll a,ll b) {return !b?a:gcd(b,a%b);}
 
int main() {
    n=Get(),A=Get(),B=Get();
    for(int i=1;i<=n;i++) s[i].l=Get(),s[i].r=Get();
    ll g=gcd(A,B+1);
    ll ans=0;
    if((long double)A/g*B>1e18) {
        for(int i=1;i<=n;i++) ans+=s[i].r-s[i].l+1;
    } else {
        ll len=A/g*B;
        int tot=n;
        for(int i=1;i<=n;i++) {
            if(s[i].r-s[i].l+1>=len) {
                cout<<len;
                return 0;
            }
            s[i].l%=len,s[i].r%=len;
            if(s[i].l>s[i].r) {
                s[++tot].l=0,s[tot].r=s[i].r;
                s[i].r=len-1;
            }
        }
        sort(s+1,s+1+tot);
        ll last=-1;
        for(int i=1;i<=tot;i++) {
            if(s[i].r<last) continue ;
            ans+=s[i].r-max(s[i].l-1,last);
            last=s[i].r;
        }
    }
    cout<<ans;
    
    return 0;
}

Subtask #1
10.0 / 10.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	1 ms	256 KB	Output is correct
2	Correct	5 ms	512 KB	Output is correct
3	Correct	6 ms	512 KB	Output is correct
4	Correct	0 ms	256 KB	Output is correct
5	Correct	0 ms	256 KB	Output is correct
6	Correct	0 ms	256 KB	Output is correct
7	Correct	0 ms	384 KB	Output is correct
8	Correct	0 ms	256 KB	Output is correct
9	Correct	0 ms	256 KB	Output is correct
10	Correct	0 ms	256 KB	Output is correct
11	Correct	0 ms	256 KB	Output is correct
12	Correct	0 ms	256 KB	Output is correct
13	Correct	0 ms	256 KB	Output is correct
14	Correct	0 ms	256 KB	Output is correct
15	Correct	0 ms	384 KB	Output is correct
16	Correct	5 ms	512 KB	Output is correct
17	Correct	57 ms	2040 KB	Output is correct
18	Correct	0 ms	384 KB	Output is correct

Subtask #2
5.0 / 5.0

#	Verdict	Memory	Grader output
1	Correct	256 KB	Output is correct
2	Correct	256 KB	Output is correct
3	Correct	256 KB	Output is correct
4	Correct	256 KB	Output is correct
5	Correct	256 KB	Output is correct

Subtask #3
5.0 / 5.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	0 ms	256 KB	Output is correct
2	Correct	1 ms	384 KB	Output is correct
3	Correct	1 ms	384 KB	Output is correct
4	Correct	1 ms	384 KB	Output is correct
5	Correct	340 ms	15992 KB	Output is correct

Subtask #4
5.0 / 5.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	0 ms	256 KB	Output is correct
2	Correct	534 ms	16636 KB	Output is correct
3	Correct	517 ms	16632 KB	Output is correct
4	Correct	535 ms	16760 KB	Output is correct

Subtask #5
5.0 / 5.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	0 ms	256 KB	Output is correct
2	Correct	534 ms	16636 KB	Output is correct
3	Correct	517 ms	16632 KB	Output is correct
4	Correct	535 ms	16760 KB	Output is correct
5	Correct	0 ms	256 KB	Output is correct
6	Correct	514 ms	16540 KB	Output is correct
7	Correct	518 ms	16612 KB	Output is correct
8	Correct	521 ms	16760 KB	Output is correct
9	Correct	556 ms	16760 KB	Output is correct

Subtask #6
20.0 / 20.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	0 ms	256 KB	Output is correct
2	Correct	534 ms	16636 KB	Output is correct
3	Correct	517 ms	16632 KB	Output is correct
4	Correct	535 ms	16760 KB	Output is correct
5	Correct	0 ms	256 KB	Output is correct
6	Correct	54 ms	2040 KB	Output is correct
7	Correct	54 ms	1912 KB	Output is correct
8	Correct	50 ms	1912 KB	Output is correct
9	Correct	51 ms	1912 KB	Output is correct
10	Correct	53 ms	1812 KB	Output is correct
11	Correct	53 ms	1912 KB	Output is correct
12	Correct	51 ms	1912 KB	Output is correct
13	Correct	53 ms	1912 KB	Output is correct
14	Correct	53 ms	1912 KB	Output is correct
15	Correct	56 ms	1912 KB	Output is correct
16	Correct	55 ms	1912 KB	Output is correct
17	Correct	52 ms	1912 KB	Output is correct
18	Correct	524 ms	16080 KB	Output is correct
19	Correct	508 ms	16028 KB	Output is correct
20	Correct	569 ms	15992 KB	Output is correct
21	Correct	58 ms	1912 KB	Output is correct
22	Correct	48 ms	1916 KB	Output is correct
23	Correct	162 ms	5624 KB	Output is correct

Subtask #7
20.0 / 20.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	0 ms	256 KB	Output is correct
2	Correct	56 ms	1912 KB	Output is correct
3	Correct	54 ms	1912 KB	Output is correct
4	Correct	587 ms	16120 KB	Output is correct
5	Correct	53 ms	1912 KB	Output is correct
6	Correct	54 ms	1912 KB	Output is correct
7	Correct	54 ms	1912 KB	Output is correct
8	Correct	55 ms	1912 KB	Output is correct
9	Correct	62 ms	1912 KB	Output is correct
10	Correct	55 ms	1912 KB	Output is correct
11	Correct	55 ms	1920 KB	Output is correct
12	Correct	49 ms	1912 KB	Output is correct
13	Correct	54 ms	1912 KB	Output is correct
14	Correct	565 ms	16120 KB	Output is correct
15	Correct	54 ms	1912 KB	Output is correct
16	Correct	515 ms	15992 KB	Output is correct
17	Correct	513 ms	15992 KB	Output is correct
18	Correct	0 ms	256 KB	Output is correct

Subtask #8
30.0 / 30.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	1 ms	256 KB	Output is correct
2	Correct	5 ms	512 KB	Output is correct
3	Correct	6 ms	512 KB	Output is correct
4	Correct	0 ms	256 KB	Output is correct
5	Correct	0 ms	256 KB	Output is correct
6	Correct	0 ms	256 KB	Output is correct
7	Correct	0 ms	384 KB	Output is correct
8	Correct	0 ms	256 KB	Output is correct
9	Correct	0 ms	256 KB	Output is correct
10	Correct	0 ms	256 KB	Output is correct
11	Correct	0 ms	256 KB	Output is correct
12	Correct	0 ms	256 KB	Output is correct
13	Correct	0 ms	256 KB	Output is correct
14	Correct	0 ms	256 KB	Output is correct
15	Correct	0 ms	384 KB	Output is correct
16	Correct	5 ms	512 KB	Output is correct
17	Correct	57 ms	2040 KB	Output is correct
18	Correct	0 ms	384 KB	Output is correct
19	Correct	0 ms	256 KB	Output is correct
20	Correct	0 ms	256 KB	Output is correct
21	Correct	0 ms	256 KB	Output is correct
22	Correct	0 ms	256 KB	Output is correct
23	Correct	0 ms	256 KB	Output is correct
24	Correct	0 ms	256 KB	Output is correct
25	Correct	1 ms	384 KB	Output is correct
26	Correct	1 ms	384 KB	Output is correct
27	Correct	1 ms	384 KB	Output is correct
28	Correct	340 ms	15992 KB	Output is correct
29	Correct	0 ms	256 KB	Output is correct
30	Correct	534 ms	16636 KB	Output is correct
31	Correct	517 ms	16632 KB	Output is correct
32	Correct	535 ms	16760 KB	Output is correct
33	Correct	0 ms	256 KB	Output is correct
34	Correct	514 ms	16540 KB	Output is correct
35	Correct	518 ms	16612 KB	Output is correct
36	Correct	521 ms	16760 KB	Output is correct
37	Correct	556 ms	16760 KB	Output is correct
38	Correct	0 ms	256 KB	Output is correct
39	Correct	54 ms	2040 KB	Output is correct
40	Correct	54 ms	1912 KB	Output is correct
41	Correct	50 ms	1912 KB	Output is correct
42	Correct	51 ms	1912 KB	Output is correct
43	Correct	53 ms	1812 KB	Output is correct
44	Correct	53 ms	1912 KB	Output is correct
45	Correct	51 ms	1912 KB	Output is correct
46	Correct	53 ms	1912 KB	Output is correct
47	Correct	53 ms	1912 KB	Output is correct
48	Correct	56 ms	1912 KB	Output is correct
49	Correct	55 ms	1912 KB	Output is correct
50	Correct	52 ms	1912 KB	Output is correct
51	Correct	524 ms	16080 KB	Output is correct
52	Correct	508 ms	16028 KB	Output is correct
53	Correct	569 ms	15992 KB	Output is correct
54	Correct	58 ms	1912 KB	Output is correct
55	Correct	48 ms	1916 KB	Output is correct
56	Correct	162 ms	5624 KB	Output is correct
57	Correct	0 ms	256 KB	Output is correct
58	Correct	56 ms	1912 KB	Output is correct
59	Correct	54 ms	1912 KB	Output is correct
60	Correct	587 ms	16120 KB	Output is correct
61	Correct	53 ms	1912 KB	Output is correct
62	Correct	54 ms	1912 KB	Output is correct
63	Correct	54 ms	1912 KB	Output is correct
64	Correct	55 ms	1912 KB	Output is correct
65	Correct	62 ms	1912 KB	Output is correct
66	Correct	55 ms	1912 KB	Output is correct
67	Correct	55 ms	1920 KB	Output is correct
68	Correct	49 ms	1912 KB	Output is correct
69	Correct	54 ms	1912 KB	Output is correct
70	Correct	565 ms	16120 KB	Output is correct
71	Correct	54 ms	1912 KB	Output is correct
72	Correct	515 ms	15992 KB	Output is correct
73	Correct	513 ms	15992 KB	Output is correct
74	Correct	0 ms	256 KB	Output is correct
75	Correct	0 ms	256 KB	Output is correct
76	Correct	0 ms	256 KB	Output is correct
77	Correct	0 ms	256 KB	Output is correct
78	Correct	0 ms	256 KB	Output is correct
79	Correct	5 ms	512 KB	Output is correct
80	Correct	584 ms	16064 KB	Output is correct
81	Correct	586 ms	16148 KB	Output is correct
82	Correct	561 ms	15992 KB	Output is correct
83	Correct	563 ms	16120 KB	Output is correct
84	Correct	562 ms	16120 KB	Output is correct
85	Correct	555 ms	15992 KB	Output is correct
86	Correct	158 ms	5752 KB	Output is correct
87	Correct	0 ms	256 KB	Output is correct

Submission #252087

Compilation message