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Submission #742760

# Submission time Handle Problem Language Result Execution time Memory
742760 2023-05-16T20:49:03 Z speedyArda Strange Device (APIO19_strange_device) C++14
100 / 100
 2814 ms 169464 KB 
#include "bits/stdc++.h"

using namespace std;
using ll = long long;
const int MAXN = 2e6+5;
map<ll, bool> visited;
vector< pair<ll, ll> > imp;
ll n, a, b;
ll _gcd(ll x, ll y)
{
    if(x < y)
        swap(x, y);
    if(y == 0)
        return x;
    return _gcd(y, x % y);
}
int main() 
{

    cin >> n >> a >> b;
    ll sum = 0;
    ll big = 1;
    map<pair<ll, ll>, bool> used;
    ll time = 0;
    ll gcd_val = _gcd(a, (b+1LL));
    if(2e18 / b * gcd_val < a)
    {
        big = 2e18;
    } else
        big = a * b / gcd_val;

    for(int i = 1; i <= n; i++)
    {

        ll f, s;
        cin >> f >> s;

        if(s - f >= big - 1)
        {
            imp.push_back({0, 1});
            imp.push_back({big - 1, 2});
        } else 
        {
            if(f % big <= s % big)
            {
                imp.push_back({f % big, 1});
                imp.push_back({s % big, 2});
            } else 
            {
                imp.push_back({0, 1});
                imp.push_back({s % big, 2});
                imp.push_back({f % big, 1});
                imp.push_back({big - 1, 2});
            }

        }

       
    }

   // cout << seg[0].sum << "\n";
    sort(imp.begin(), imp.end());
        ll cnt = 0;
        ll ans = 0;
        ll last = -1;
        for(pair<ll, ll> e : imp)
        {
            //cout << ans << " " << cnt << " " << last << "\n";
            if(last != -1 && cnt > 0)
            {
                ans += e.first - last;
                if(!visited[last])
                {
                    ans++;
                    visited[last] = true;
                }
                visited[e.first] = true;
            }
            if(e.second == 1)
            {
                cnt++;
                last = e.first;
            } else 
            {   
                cnt--;
                last = e.first;
            }   
        }
        cout << ans << "\n";
}

Compilation message

strange_device.cpp: In function 'int main()':
strange_device.cpp:21:8: warning: unused variable 'sum' [-Wunused-variable]
   21 |     ll sum = 0;
      |        ^~~
strange_device.cpp:24:8: warning: unused variable 'time' [-Wunused-variable]
   24 |     ll time = 0;
      |        ^~~~

Subtask #1
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 212 KB Output is correct
2 Correct 18 ms 2224 KB Output is correct
3 Correct 21 ms 2136 KB Output is correct
4 Correct 1 ms 212 KB Output is correct
5 Correct 1 ms 212 KB Output is correct
6 Correct 0 ms 212 KB Output is correct
7 Correct 1 ms 212 KB Output is correct
8 Correct 1 ms 212 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 300 KB Output is correct
12 Correct 1 ms 292 KB Output is correct
13 Correct 1 ms 212 KB Output is correct
14 Correct 0 ms 212 KB Output is correct
15 Correct 1 ms 212 KB Output is correct
16 Correct 18 ms 2152 KB Output is correct
17 Correct 243 ms 10300 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 0 ms 212 KB Output is correct
2 Correct 1 ms 212 KB Output is correct
3 Correct 1 ms 300 KB Output is correct
4 Correct 1 ms 304 KB Output is correct
5 Correct 1 ms 300 KB Output is correct

Subtask #3
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 212 KB Output is correct
2 Correct 2 ms 340 KB Output is correct
3 Correct 2 ms 340 KB Output is correct
4 Correct 2 ms 340 KB Output is correct
5 Correct 960 ms 33280 KB Output is correct

Subtask #4
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 212 KB Output is correct
2 Correct 1885 ms 94204 KB Output is correct
3 Correct 2100 ms 159400 KB Output is correct
4 Correct 2047 ms 169340 KB Output is correct

Subtask #5
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 212 KB Output is correct
2 Correct 1885 ms 94204 KB Output is correct
3 Correct 2100 ms 159400 KB Output is correct
4 Correct 2047 ms 169340 KB Output is correct
5 Correct 1 ms 212 KB Output is correct
6 Correct 2165 ms 169404 KB Output is correct
7 Correct 1923 ms 106848 KB Output is correct
8 Correct 2149 ms 169288 KB Output is correct
9 Correct 2143 ms 169324 KB Output is correct

Subtask #6
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 212 KB Output is correct
2 Correct 1885 ms 94204 KB Output is correct
3 Correct 2100 ms 159400 KB Output is correct
4 Correct 2047 ms 169340 KB Output is correct
5 Correct 1 ms 212 KB Output is correct
6 Correct 183 ms 19560 KB Output is correct
7 Correct 207 ms 19600 KB Output is correct
8 Correct 184 ms 19600 KB Output is correct
9 Correct 189 ms 19604 KB Output is correct
10 Correct 201 ms 19576 KB Output is correct
11 Correct 201 ms 19548 KB Output is correct
12 Correct 200 ms 19684 KB Output is correct
13 Correct 198 ms 19664 KB Output is correct
14 Correct 194 ms 19688 KB Output is correct
15 Correct 238 ms 19600 KB Output is correct
16 Correct 194 ms 19596 KB Output is correct
17 Correct 186 ms 19596 KB Output is correct
18 Correct 2221 ms 169336 KB Output is correct
19 Correct 2177 ms 169464 KB Output is correct
20 Correct 2305 ms 169268 KB Output is correct
21 Correct 200 ms 19576 KB Output is correct
22 Correct 220 ms 19616 KB Output is correct
23 Correct 444 ms 26840 KB Output is correct

Subtask #7
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 212 KB Output is correct
2 Correct 190 ms 16820 KB Output is correct
3 Correct 188 ms 16848 KB Output is correct
4 Correct 2268 ms 158132 KB Output is correct
5 Correct 191 ms 16788 KB Output is correct
6 Correct 186 ms 16744 KB Output is correct
7 Correct 195 ms 16904 KB Output is correct
8 Correct 202 ms 16844 KB Output is correct
9 Correct 192 ms 16936 KB Output is correct
10 Correct 189 ms 16748 KB Output is correct
11 Correct 184 ms 16752 KB Output is correct
12 Correct 182 ms 16732 KB Output is correct
13 Correct 196 ms 16816 KB Output is correct
14 Correct 2300 ms 158224 KB Output is correct
15 Correct 197 ms 16816 KB Output is correct
16 Correct 2181 ms 169376 KB Output is correct
17 Correct 2229 ms 169372 KB Output is correct
18 Correct 0 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 18 ms 2224 KB Output is correct
3 Correct 21 ms 2136 KB Output is correct
4 Correct 1 ms 212 KB Output is correct
5 Correct 1 ms 212 KB Output is correct
6 Correct 0 ms 212 KB Output is correct
7 Correct 1 ms 212 KB Output is correct
8 Correct 1 ms 212 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 300 KB Output is correct
12 Correct 1 ms 292 KB Output is correct
13 Correct 1 ms 212 KB Output is correct
14 Correct 0 ms 212 KB Output is correct
15 Correct 1 ms 212 KB Output is correct
16 Correct 18 ms 2152 KB Output is correct
17 Correct 243 ms 10300 KB Output is correct
18 Correct 1 ms 212 KB Output is correct
19 Correct 0 ms 212 KB Output is correct
20 Correct 1 ms 212 KB Output is correct
21 Correct 1 ms 300 KB Output is correct
22 Correct 1 ms 304 KB Output is correct
23 Correct 1 ms 300 KB Output is correct
24 Correct 0 ms 212 KB Output is correct
25 Correct 2 ms 340 KB Output is correct
26 Correct 2 ms 340 KB Output is correct
27 Correct 2 ms 340 KB Output is correct
28 Correct 960 ms 33280 KB Output is correct
29 Correct 0 ms 212 KB Output is correct
30 Correct 1885 ms 94204 KB Output is correct
31 Correct 2100 ms 159400 KB Output is correct
32 Correct 2047 ms 169340 KB Output is correct
33 Correct 1 ms 212 KB Output is correct
34 Correct 2165 ms 169404 KB Output is correct
35 Correct 1923 ms 106848 KB Output is correct
36 Correct 2149 ms 169288 KB Output is correct
37 Correct 2143 ms 169324 KB Output is correct
38 Correct 1 ms 212 KB Output is correct
39 Correct 183 ms 19560 KB Output is correct
40 Correct 207 ms 19600 KB Output is correct
41 Correct 184 ms 19600 KB Output is correct
42 Correct 189 ms 19604 KB Output is correct
43 Correct 201 ms 19576 KB Output is correct
44 Correct 201 ms 19548 KB Output is correct
45 Correct 200 ms 19684 KB Output is correct
46 Correct 198 ms 19664 KB Output is correct
47 Correct 194 ms 19688 KB Output is correct
48 Correct 238 ms 19600 KB Output is correct
49 Correct 194 ms 19596 KB Output is correct
50 Correct 186 ms 19596 KB Output is correct
51 Correct 2221 ms 169336 KB Output is correct
52 Correct 2177 ms 169464 KB Output is correct
53 Correct 2305 ms 169268 KB Output is correct
54 Correct 200 ms 19576 KB Output is correct
55 Correct 220 ms 19616 KB Output is correct
56 Correct 444 ms 26840 KB Output is correct
57 Correct 0 ms 212 KB Output is correct
58 Correct 190 ms 16820 KB Output is correct
59 Correct 188 ms 16848 KB Output is correct
60 Correct 2268 ms 158132 KB Output is correct
61 Correct 191 ms 16788 KB Output is correct
62 Correct 186 ms 16744 KB Output is correct
63 Correct 195 ms 16904 KB Output is correct
64 Correct 202 ms 16844 KB Output is correct
65 Correct 192 ms 16936 KB Output is correct
66 Correct 189 ms 16748 KB Output is correct
67 Correct 184 ms 16752 KB Output is correct
68 Correct 182 ms 16732 KB Output is correct
69 Correct 196 ms 16816 KB Output is correct
70 Correct 2300 ms 158224 KB Output is correct
71 Correct 197 ms 16816 KB Output is correct
72 Correct 2181 ms 169376 KB Output is correct
73 Correct 2229 ms 169372 KB Output is correct
74 Correct 0 ms 212 KB Output is correct
75 Correct 1 ms 296 KB Output is correct
76 Correct 1 ms 212 KB Output is correct
77 Correct 1 ms 212 KB Output is correct
78 Correct 1 ms 212 KB Output is correct
79 Correct 22 ms 2116 KB Output is correct
80 Correct 2387 ms 169316 KB Output is correct
81 Correct 2260 ms 169440 KB Output is correct
82 Correct 2237 ms 169380 KB Output is correct
83 Correct 2323 ms 169260 KB Output is correct
84 Correct 2814 ms 169200 KB Output is correct
85 Correct 2329 ms 169304 KB Output is correct
86 Correct 453 ms 26676 KB Output is correct
87 Correct 1 ms 212 KB Output is correct