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Submission #447440

# Submission time Handle Problem Language Result Execution time Memory
447440 2021-07-26T10:41:43 Z Mahdi Strange Device (APIO19_strange_device) C++17
100 / 100
 2460 ms 93728 KB 
#include<bits/stdc++.h>
using namespace std;
#define all(v) v.begin(), v.end()
#define pii pair<int, int>
#define F first
#define S second
typedef long long ll;
const int N=1e6+5;
ll A, B, l[N], r[N], ans;
map<ll, ll>m;
int n;

void add(ll x, ll y){
    if(m.empty()){
        m.insert({x, y});
        return;
    }
    auto it=m.upper_bound(x);
    if(it!=m.begin()){
        --it;
        if(it->S>=x){
            if(it->S>=y)
                return;
            x=it->F;
            m.erase(it);
        }
    }
    it=m.upper_bound(x);
    while(it!=m.end()){
        if(it->S<=y)
            m.erase(it);
        else{
            if(it->F<=y){
                y=it->S;
                m.erase(it);
            }
            break;
        }
        it=m.upper_bound(x);
    }
    m.insert({x, y});
}

int main(){
    //ios_base::sync_with_stdio(0); cin.tie(0); cout.tie(0);
    cin>>n>>A>>B;
    for(int i=0;i<n;++i)
        cin>>l[i]>>r[i];
    ll x=__gcd(A, B+1);
    x=A/x;
    ll inf=1e18;
    if(inf/x<B){
        for(int i=0;i<n;++i)
            ans+=r[i]-l[i]+1;
        cout<<ans;
        return 0;
    }
    B*=x;
    for(int i=0;i<n;++i){
        if(l[i]+B-1<=r[i]){
            cout<<B;
            return 0;
        }
        l[i]%=B;
        r[i]%=B;
        if(r[i]>=l[i])
            add(l[i], r[i]);
        else{
            add(l[i], B-1);
            add(0, r[i]);
        }
    }
    auto it=m.begin();
    while(it!=m.end()){
        ans+=it->S-it->F+1;
        ++it;
    }
    cout<<ans;
}

Subtask #1
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 204 KB Output is correct
2 Correct 19 ms 952 KB Output is correct
3 Correct 18 ms 1064 KB Output is correct
4 Correct 0 ms 204 KB Output is correct
5 Correct 0 ms 296 KB Output is correct
6 Correct 0 ms 204 KB Output is correct
7 Correct 1 ms 204 KB Output is correct
8 Correct 1 ms 296 KB Output is correct
9 Correct 1 ms 304 KB Output is correct
10 Correct 1 ms 204 KB Output is correct
11 Correct 1 ms 204 KB Output is correct
12 Correct 1 ms 204 KB Output is correct
13 Correct 1 ms 204 KB Output is correct
14 Correct 0 ms 204 KB Output is correct
15 Correct 1 ms 204 KB Output is correct
16 Correct 17 ms 1416 KB Output is correct
17 Correct 191 ms 11716 KB Output is correct
18 Correct 1 ms 204 KB Output is correct

Subtask #2
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 204 KB Output is correct
2 Correct 0 ms 204 KB Output is correct
3 Correct 0 ms 204 KB Output is correct
4 Correct 0 ms 204 KB Output is correct
5 Correct 1 ms 204 KB Output is correct

Subtask #3
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 204 KB Output is correct
2 Correct 2 ms 332 KB Output is correct
3 Correct 3 ms 332 KB Output is correct
4 Correct 3 ms 316 KB Output is correct
5 Correct 1194 ms 41080 KB Output is correct

Subtask #4
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 204 KB Output is correct
2 Correct 1993 ms 78520 KB Output is correct
3 Correct 1949 ms 78432 KB Output is correct
4 Correct 2274 ms 78532 KB Output is correct

Subtask #5
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 204 KB Output is correct
2 Correct 1993 ms 78520 KB Output is correct
3 Correct 1949 ms 78432 KB Output is correct
4 Correct 2274 ms 78532 KB Output is correct
5 Correct 0 ms 204 KB Output is correct
6 Correct 1984 ms 78756 KB Output is correct
7 Correct 2017 ms 78536 KB Output is correct
8 Correct 1992 ms 78480 KB Output is correct
9 Correct 2260 ms 78612 KB Output is correct

Subtask #6
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 204 KB Output is correct
2 Correct 1993 ms 78520 KB Output is correct
3 Correct 1949 ms 78432 KB Output is correct
4 Correct 2274 ms 78532 KB Output is correct
5 Correct 0 ms 204 KB Output is correct
6 Correct 181 ms 7988 KB Output is correct
7 Correct 182 ms 8088 KB Output is correct
8 Correct 177 ms 8132 KB Output is correct
9 Correct 188 ms 8000 KB Output is correct
10 Correct 179 ms 8064 KB Output is correct
11 Correct 176 ms 8020 KB Output is correct
12 Correct 184 ms 8164 KB Output is correct
13 Correct 188 ms 8064 KB Output is correct
14 Correct 181 ms 8052 KB Output is correct
15 Correct 193 ms 8240 KB Output is correct
16 Correct 195 ms 11800 KB Output is correct
17 Correct 197 ms 11760 KB Output is correct
18 Correct 1887 ms 90316 KB Output is correct
19 Correct 2062 ms 90324 KB Output is correct
20 Correct 2179 ms 90120 KB Output is correct
21 Correct 187 ms 11720 KB Output is correct
22 Correct 183 ms 11776 KB Output is correct
23 Correct 485 ms 18288 KB Output is correct

Subtask #7
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 204 KB Output is correct
2 Correct 189 ms 7980 KB Output is correct
3 Correct 191 ms 8096 KB Output is correct
4 Correct 2144 ms 78616 KB Output is correct
5 Correct 197 ms 8112 KB Output is correct
6 Correct 194 ms 8036 KB Output is correct
7 Correct 194 ms 8004 KB Output is correct
8 Correct 189 ms 8116 KB Output is correct
9 Correct 190 ms 8156 KB Output is correct
10 Correct 181 ms 8040 KB Output is correct
11 Correct 186 ms 8044 KB Output is correct
12 Correct 197 ms 8220 KB Output is correct
13 Correct 206 ms 8032 KB Output is correct
14 Correct 2383 ms 78484 KB Output is correct
15 Correct 178 ms 11220 KB Output is correct
16 Correct 1911 ms 93728 KB Output is correct
17 Correct 1896 ms 93692 KB Output is correct
18 Correct 1 ms 204 KB Output is correct

Subtask #8
30.0 / 30.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 204 KB Output is correct
2 Correct 19 ms 952 KB Output is correct
3 Correct 18 ms 1064 KB Output is correct
4 Correct 0 ms 204 KB Output is correct
5 Correct 0 ms 296 KB Output is correct
6 Correct 0 ms 204 KB Output is correct
7 Correct 1 ms 204 KB Output is correct
8 Correct 1 ms 296 KB Output is correct
9 Correct 1 ms 304 KB Output is correct
10 Correct 1 ms 204 KB Output is correct
11 Correct 1 ms 204 KB Output is correct
12 Correct 1 ms 204 KB Output is correct
13 Correct 1 ms 204 KB Output is correct
14 Correct 0 ms 204 KB Output is correct
15 Correct 1 ms 204 KB Output is correct
16 Correct 17 ms 1416 KB Output is correct
17 Correct 191 ms 11716 KB Output is correct
18 Correct 1 ms 204 KB Output is correct
19 Correct 1 ms 204 KB Output is correct
20 Correct 0 ms 204 KB Output is correct
21 Correct 0 ms 204 KB Output is correct
22 Correct 0 ms 204 KB Output is correct
23 Correct 1 ms 204 KB Output is correct
24 Correct 0 ms 204 KB Output is correct
25 Correct 2 ms 332 KB Output is correct
26 Correct 3 ms 332 KB Output is correct
27 Correct 3 ms 316 KB Output is correct
28 Correct 1194 ms 41080 KB Output is correct
29 Correct 0 ms 204 KB Output is correct
30 Correct 1993 ms 78520 KB Output is correct
31 Correct 1949 ms 78432 KB Output is correct
32 Correct 2274 ms 78532 KB Output is correct
33 Correct 0 ms 204 KB Output is correct
34 Correct 1984 ms 78756 KB Output is correct
35 Correct 2017 ms 78536 KB Output is correct
36 Correct 1992 ms 78480 KB Output is correct
37 Correct 2260 ms 78612 KB Output is correct
38 Correct 0 ms 204 KB Output is correct
39 Correct 181 ms 7988 KB Output is correct
40 Correct 182 ms 8088 KB Output is correct
41 Correct 177 ms 8132 KB Output is correct
42 Correct 188 ms 8000 KB Output is correct
43 Correct 179 ms 8064 KB Output is correct
44 Correct 176 ms 8020 KB Output is correct
45 Correct 184 ms 8164 KB Output is correct
46 Correct 188 ms 8064 KB Output is correct
47 Correct 181 ms 8052 KB Output is correct
48 Correct 193 ms 8240 KB Output is correct
49 Correct 195 ms 11800 KB Output is correct
50 Correct 197 ms 11760 KB Output is correct
51 Correct 1887 ms 90316 KB Output is correct
52 Correct 2062 ms 90324 KB Output is correct
53 Correct 2179 ms 90120 KB Output is correct
54 Correct 187 ms 11720 KB Output is correct
55 Correct 183 ms 11776 KB Output is correct
56 Correct 485 ms 18288 KB Output is correct
57 Correct 0 ms 204 KB Output is correct
58 Correct 189 ms 7980 KB Output is correct
59 Correct 191 ms 8096 KB Output is correct
60 Correct 2144 ms 78616 KB Output is correct
61 Correct 197 ms 8112 KB Output is correct
62 Correct 194 ms 8036 KB Output is correct
63 Correct 194 ms 8004 KB Output is correct
64 Correct 189 ms 8116 KB Output is correct
65 Correct 190 ms 8156 KB Output is correct
66 Correct 181 ms 8040 KB Output is correct
67 Correct 186 ms 8044 KB Output is correct
68 Correct 197 ms 8220 KB Output is correct
69 Correct 206 ms 8032 KB Output is correct
70 Correct 2383 ms 78484 KB Output is correct
71 Correct 178 ms 11220 KB Output is correct
72 Correct 1911 ms 93728 KB Output is correct
73 Correct 1896 ms 93692 KB Output is correct
74 Correct 1 ms 204 KB Output is correct
75 Correct 0 ms 204 KB Output is correct
76 Correct 0 ms 204 KB Output is correct
77 Correct 1 ms 204 KB Output is correct
78 Correct 1 ms 204 KB Output is correct
79 Correct 18 ms 1392 KB Output is correct
80 Correct 2238 ms 90976 KB Output is correct
81 Correct 2156 ms 93680 KB Output is correct
82 Correct 2460 ms 93692 KB Output is correct
83 Correct 2229 ms 93712 KB Output is correct
84 Correct 2423 ms 93636 KB Output is correct
85 Correct 2148 ms 93184 KB Output is correct
86 Correct 487 ms 18116 KB Output is correct
87 Correct 1 ms 204 KB Output is correct