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Submission #729643

# Submission time Handle Problem Language Result Execution time Memory
729643 2023-04-24T10:24:07 Z danikoynov Strange Device (APIO19_strange_device) C++14
0 / 100
 5000 ms 524288 KB 
#include<bits/stdc++.h>
#define endl '\n'

using namespace std;
typedef long long ll;

void speed()
{
    ios_base::sync_with_stdio(false);
    cin.tie(NULL);
    cout.tie(NULL);
}

const int maxn = 1e6 + 10;

int n;
ll l[maxn], r[maxn];
ll A, B;


void solve()
{
    cin >> n >> A >> B;

    for (int i = 1; i <= n; i ++)
    {
        cin >> l[i] >> r[i];
    }
    ll g = __gcd(A, B + 1);
    /// period is A * B / g
    if ((double)(1e18) / (double)(A) < (double)(B) / (double)(g))
    {
        ll ans = 0;
        for (int i = 1; i <= n; i ++)
        {
            ans = ans + (r[i] - l[i] + 1);
        }
        cout << ans << endl;
        return;
    }

    double period = A * B / g;
    unordered_set < ll > st;
    for (int i = 1; i <= n; i ++)
    {

        for (ll j = l[i]; j <= r[i]; j ++)
        {
                 ll x = (j + (j / B)) % A, y = j % B;

                 ///cout << x << " " << y << endl;
            st.insert({x * B + A});
        }
    }

    cout << st.size() << endl;
}


int main()
{
    solve();
    return 0;
}
/**
1  10000 3312452154131231
1 1
*/

Compilation message

strange_device.cpp: In function 'void solve()':
strange_device.cpp:49:44: warning: unused variable 'y' [-Wunused-variable]
   49 |                  ll x = (j + (j / B)) % A, y = j % B;
      |                                            ^
strange_device.cpp:42:12: warning: unused variable 'period' [-Wunused-variable]
   42 |     double period = A * B / g;
      |            ^~~~~~

Subtask #1
0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 212 KB Output is correct
2 Incorrect 21 ms 796 KB Output isn't correct
3 Halted 0 ms 0 KB -

Subtask #2
0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 212 KB Output is correct
2 Execution timed out 5038 ms 212 KB Time limit exceeded
3 Halted 0 ms 0 KB -

Subtask #3
0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 212 KB Output is correct
2 Incorrect 23 ms 880 KB Output isn't correct
3 Halted 0 ms 0 KB -

Subtask #4
0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 212 KB Output is correct
2 Correct 1325 ms 58740 KB Output is correct
3 Runtime error 2161 ms 524288 KB Execution killed with signal 9
4 Halted 0 ms 0 KB -

Subtask #5
0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 212 KB Output is correct
2 Correct 1325 ms 58740 KB Output is correct
3 Runtime error 2161 ms 524288 KB Execution killed with signal 9
4 Halted 0 ms 0 KB -

Subtask #6
0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 212 KB Output is correct
2 Correct 1325 ms 58740 KB Output is correct
3 Runtime error 2161 ms 524288 KB Execution killed with signal 9
4 Halted 0 ms 0 KB -

Subtask #7
0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 304 KB Output is correct
2 Incorrect 958 ms 4412 KB Output isn't correct
3 Halted 0 ms 0 KB -

Subtask #8
0 / 30.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 212 KB Output is correct
2 Incorrect 21 ms 796 KB Output isn't correct
3 Halted 0 ms 0 KB -