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Submission #346641

# Submission time Handle Problem Language Result Execution time Memory
346641 2021-01-10T14:00:10 Z YJU Strange Device (APIO19_strange_device) C++14
100 / 100
 529 ms 27120 KB 
#include<bits/stdc++.h>
#pragma GCC optimize("unroll-loops,no-stack-protector")
using namespace std;
typedef long long ll;
typedef long double ld;
typedef pair<ll,ll> pll;
const ll MOD=1e9+7;
const ll MOD2=998244353;
const ll N=2e5+5;
const ld pi=acos(-1);
const ll INF=1e18;
#define SQ(i) ((i)*(i))
#define REP(i,n) for(ll i=0;i<n;i++)
#define REP1(i,n) for(ll i=1;i<=n;i++)
#define pb push_back
#define mp make_pair
#define X first
#define Y second
#define setp setprecision
#define lwb lower_bound
#define SZ(_a) (ll)_a.size()

ll n,a,b,ans,last=-1,x,y;
vector<pll> v;

int main(){
	ios_base::sync_with_stdio(0);cin.tie(0);
	cin>>n>>a>>b;
	ll g=__gcd(a,b+1);
	if((long double)a/g*b>1e18){
		REP(i,n)cin>>x>>y,ans+=y-x+1;
		cout<<ans<<"\n";return 0;
	}
	ll ab=(a/g*b);
	REP(i,n){
		cin>>x>>y;
		if(y-x+1>=ab){cout<<ab<<"\n";return 0;}
		x%=ab;y%=ab;
		if(x>y){
			v.pb(mp(x,ab-1));
			v.pb(mp(0,y));
		}else{
			v.pb(mp(x,y));
		}
	}
	sort(v.begin(),v.end());
	for(auto i:v){
		ans+=max(0LL,i.Y-max(last,i.X-1));
		last=max(last,i.Y);
	}
	cout<<min(ans,ab)<<"\n";
	return 0;
}

Subtask #1
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 364 KB Output is correct
2 Correct 5 ms 768 KB Output is correct
3 Correct 5 ms 748 KB Output is correct
4 Correct 1 ms 364 KB Output is correct
5 Correct 0 ms 364 KB Output is correct
6 Correct 0 ms 364 KB Output is correct
7 Correct 1 ms 364 KB Output is correct
8 Correct 1 ms 364 KB Output is correct
9 Correct 1 ms 364 KB Output is correct
10 Correct 0 ms 364 KB Output is correct
11 Correct 0 ms 364 KB Output is correct
12 Correct 0 ms 364 KB Output is correct
13 Correct 1 ms 364 KB Output is correct
14 Correct 0 ms 364 KB Output is correct
15 Correct 1 ms 364 KB Output is correct
16 Correct 6 ms 748 KB Output is correct
17 Correct 53 ms 2920 KB Output is correct
18 Correct 1 ms 384 KB Output is correct

Subtask #2
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 364 KB Output is correct
2 Correct 1 ms 364 KB Output is correct
3 Correct 0 ms 364 KB Output is correct
4 Correct 0 ms 364 KB Output is correct
5 Correct 1 ms 364 KB Output is correct

Subtask #3
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 364 KB Output is correct
2 Correct 1 ms 364 KB Output is correct
3 Correct 1 ms 364 KB Output is correct
4 Correct 1 ms 364 KB Output is correct
5 Correct 332 ms 17232 KB Output is correct

Subtask #4
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 364 KB Output is correct
2 Correct 458 ms 16952 KB Output is correct
3 Correct 452 ms 17352 KB Output is correct
4 Correct 436 ms 17232 KB Output is correct

Subtask #5
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 364 KB Output is correct
2 Correct 458 ms 16952 KB Output is correct
3 Correct 452 ms 17352 KB Output is correct
4 Correct 436 ms 17232 KB Output is correct
5 Correct 0 ms 364 KB Output is correct
6 Correct 447 ms 17232 KB Output is correct
7 Correct 456 ms 17380 KB Output is correct
8 Correct 445 ms 17232 KB Output is correct
9 Correct 494 ms 17272 KB Output is correct

Subtask #6
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 364 KB Output is correct
2 Correct 458 ms 16952 KB Output is correct
3 Correct 452 ms 17352 KB Output is correct
4 Correct 436 ms 17232 KB Output is correct
5 Correct 1 ms 384 KB Output is correct
6 Correct 44 ms 2920 KB Output is correct
7 Correct 48 ms 2792 KB Output is correct
8 Correct 44 ms 2792 KB Output is correct
9 Correct 47 ms 2792 KB Output is correct
10 Correct 46 ms 2976 KB Output is correct
11 Correct 45 ms 2844 KB Output is correct
12 Correct 43 ms 2792 KB Output is correct
13 Correct 48 ms 2792 KB Output is correct
14 Correct 46 ms 2792 KB Output is correct
15 Correct 49 ms 2792 KB Output is correct
16 Correct 51 ms 2792 KB Output is correct
17 Correct 45 ms 2792 KB Output is correct
18 Correct 454 ms 17232 KB Output is correct
19 Correct 450 ms 17232 KB Output is correct
20 Correct 499 ms 17232 KB Output is correct
21 Correct 48 ms 2792 KB Output is correct
22 Correct 42 ms 2792 KB Output is correct
23 Correct 140 ms 8944 KB Output is correct

Subtask #7
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 364 KB Output is correct
2 Correct 48 ms 2536 KB Output is correct
3 Correct 47 ms 2920 KB Output is correct
4 Correct 523 ms 17232 KB Output is correct
5 Correct 47 ms 2792 KB Output is correct
6 Correct 49 ms 2792 KB Output is correct
7 Correct 49 ms 2792 KB Output is correct
8 Correct 48 ms 2792 KB Output is correct
9 Correct 46 ms 2792 KB Output is correct
10 Correct 49 ms 2792 KB Output is correct
11 Correct 48 ms 2792 KB Output is correct
12 Correct 42 ms 2792 KB Output is correct
13 Correct 47 ms 2792 KB Output is correct
14 Correct 495 ms 17372 KB Output is correct
15 Correct 47 ms 2804 KB Output is correct
16 Correct 448 ms 17232 KB Output is correct
17 Correct 440 ms 17232 KB Output is correct
18 Correct 1 ms 364 KB Output is correct

Subtask #8
30.0 / 30.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 364 KB Output is correct
2 Correct 5 ms 768 KB Output is correct
3 Correct 5 ms 748 KB Output is correct
4 Correct 1 ms 364 KB Output is correct
5 Correct 0 ms 364 KB Output is correct
6 Correct 0 ms 364 KB Output is correct
7 Correct 1 ms 364 KB Output is correct
8 Correct 1 ms 364 KB Output is correct
9 Correct 1 ms 364 KB Output is correct
10 Correct 0 ms 364 KB Output is correct
11 Correct 0 ms 364 KB Output is correct
12 Correct 0 ms 364 KB Output is correct
13 Correct 1 ms 364 KB Output is correct
14 Correct 0 ms 364 KB Output is correct
15 Correct 1 ms 364 KB Output is correct
16 Correct 6 ms 748 KB Output is correct
17 Correct 53 ms 2920 KB Output is correct
18 Correct 1 ms 384 KB Output is correct
19 Correct 0 ms 364 KB Output is correct
20 Correct 1 ms 364 KB Output is correct
21 Correct 0 ms 364 KB Output is correct
22 Correct 0 ms 364 KB Output is correct
23 Correct 1 ms 364 KB Output is correct
24 Correct 0 ms 364 KB Output is correct
25 Correct 1 ms 364 KB Output is correct
26 Correct 1 ms 364 KB Output is correct
27 Correct 1 ms 364 KB Output is correct
28 Correct 332 ms 17232 KB Output is correct
29 Correct 1 ms 364 KB Output is correct
30 Correct 458 ms 16952 KB Output is correct
31 Correct 452 ms 17352 KB Output is correct
32 Correct 436 ms 17232 KB Output is correct
33 Correct 0 ms 364 KB Output is correct
34 Correct 447 ms 17232 KB Output is correct
35 Correct 456 ms 17380 KB Output is correct
36 Correct 445 ms 17232 KB Output is correct
37 Correct 494 ms 17272 KB Output is correct
38 Correct 1 ms 384 KB Output is correct
39 Correct 44 ms 2920 KB Output is correct
40 Correct 48 ms 2792 KB Output is correct
41 Correct 44 ms 2792 KB Output is correct
42 Correct 47 ms 2792 KB Output is correct
43 Correct 46 ms 2976 KB Output is correct
44 Correct 45 ms 2844 KB Output is correct
45 Correct 43 ms 2792 KB Output is correct
46 Correct 48 ms 2792 KB Output is correct
47 Correct 46 ms 2792 KB Output is correct
48 Correct 49 ms 2792 KB Output is correct
49 Correct 51 ms 2792 KB Output is correct
50 Correct 45 ms 2792 KB Output is correct
51 Correct 454 ms 17232 KB Output is correct
52 Correct 450 ms 17232 KB Output is correct
53 Correct 499 ms 17232 KB Output is correct
54 Correct 48 ms 2792 KB Output is correct
55 Correct 42 ms 2792 KB Output is correct
56 Correct 140 ms 8944 KB Output is correct
57 Correct 0 ms 364 KB Output is correct
58 Correct 48 ms 2536 KB Output is correct
59 Correct 47 ms 2920 KB Output is correct
60 Correct 523 ms 17232 KB Output is correct
61 Correct 47 ms 2792 KB Output is correct
62 Correct 49 ms 2792 KB Output is correct
63 Correct 49 ms 2792 KB Output is correct
64 Correct 48 ms 2792 KB Output is correct
65 Correct 46 ms 2792 KB Output is correct
66 Correct 49 ms 2792 KB Output is correct
67 Correct 48 ms 2792 KB Output is correct
68 Correct 42 ms 2792 KB Output is correct
69 Correct 47 ms 2792 KB Output is correct
70 Correct 495 ms 17372 KB Output is correct
71 Correct 47 ms 2804 KB Output is correct
72 Correct 448 ms 17232 KB Output is correct
73 Correct 440 ms 17232 KB Output is correct
74 Correct 1 ms 364 KB Output is correct
75 Correct 1 ms 364 KB Output is correct
76 Correct 1 ms 364 KB Output is correct
77 Correct 1 ms 364 KB Output is correct
78 Correct 1 ms 364 KB Output is correct
79 Correct 5 ms 1132 KB Output is correct
80 Correct 520 ms 27028 KB Output is correct
81 Correct 529 ms 26960 KB Output is correct
82 Correct 490 ms 26960 KB Output is correct
83 Correct 488 ms 26960 KB Output is correct
84 Correct 493 ms 27120 KB Output is correct
85 Correct 493 ms 26960 KB Output is correct
86 Correct 152 ms 18484 KB Output is correct
87 Correct 1 ms 364 KB Output is correct