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Submission #663103

# Submission time Handle Problem Language Result Execution time Memory
663103 2022-11-26T15:48:54 Z Ai7081 Strange Device (APIO19_strange_device) C++17
65 / 100
 486 ms 16872 KB 
#include <bits/stdc++.h>
using namespace std;
#define ll long long
#define pii pair<ll, ll>

ll n, a, b, l, r, loop;
vector<pii> v;

ll gcd(ll c1, ll c2) {
    if (!(max(c1,c2)%min(c1,c2))) return min(c1, c2);
    return gcd(min(c1,c2), max(c1,c2)%min(c1,c2));
}

int main() {
    ios_base::sync_with_stdio(false); cin.tie(0);
    cin >> n >> a >> b;
    a/=gcd(a,b+1);
    double dloop=(double)a*double(b);
    loop = (dloop>1e18 ? (ll)1e18+1 : (ll)dloop);
    while (n--) {
        cin >> l >> r, l%=loop, r%=loop;
        if (l>r) v.push_back({0,r}), v.push_back({l,loop-1});
        else v.push_back({l,r});
    }
    sort(v.begin(), v.end());
    ll out=0, ma=-1;
    for (auto [x,y]:v) out += (ma<x ? y-x+1 : max((ll)0,y-ma)), ma=max(ma,y);
    cout << out;
    return 0;
}

/*
3 3 3
4 4
7 9
17 18
ans: 4

3 5 10
1 20
50 68
89 98
ans: 31

1 1000000000000000 1000000000000000000
100000 1000000
*/

Subtask #1
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 212 KB Output is correct
2 Correct 4 ms 600 KB Output is correct
3 Correct 4 ms 600 KB Output is correct
4 Correct 1 ms 212 KB Output is correct
5 Correct 0 ms 212 KB Output is correct
6 Correct 0 ms 212 KB Output is correct
7 Correct 0 ms 212 KB Output is correct
8 Correct 0 ms 212 KB Output is correct
9 Correct 0 ms 212 KB Output is correct
10 Correct 0 ms 212 KB Output is correct
11 Correct 0 ms 212 KB Output is correct
12 Correct 0 ms 212 KB Output is correct
13 Correct 1 ms 212 KB Output is correct
14 Correct 1 ms 212 KB Output is correct
15 Correct 1 ms 212 KB Output is correct
16 Correct 6 ms 600 KB Output is correct
17 Correct 47 ms 2492 KB Output is correct
18 Correct 0 ms 212 KB Output is correct

Subtask #2
0 / 5.0

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

Subtask #3
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 212 KB Output is correct
2 Correct 1 ms 340 KB Output is correct
3 Correct 1 ms 340 KB Output is correct
4 Correct 2 ms 340 KB Output is correct
5 Correct 306 ms 16848 KB Output is correct

Subtask #4
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 212 KB Output is correct
2 Correct 436 ms 16804 KB Output is correct
3 Correct 420 ms 16860 KB Output is correct
4 Correct 431 ms 16792 KB Output is correct

Subtask #5
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 212 KB Output is correct
2 Correct 436 ms 16804 KB Output is correct
3 Correct 420 ms 16860 KB Output is correct
4 Correct 431 ms 16792 KB Output is correct
5 Correct 1 ms 212 KB Output is correct
6 Correct 445 ms 16804 KB Output is correct
7 Correct 451 ms 16804 KB Output is correct
8 Correct 386 ms 16808 KB Output is correct
9 Correct 439 ms 16868 KB Output is correct

Subtask #6
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 212 KB Output is correct
2 Correct 436 ms 16804 KB Output is correct
3 Correct 420 ms 16860 KB Output is correct
4 Correct 431 ms 16792 KB Output is correct
5 Correct 0 ms 212 KB Output is correct
6 Correct 43 ms 2396 KB Output is correct
7 Correct 55 ms 2488 KB Output is correct
8 Correct 50 ms 2512 KB Output is correct
9 Correct 41 ms 2440 KB Output is correct
10 Correct 37 ms 2512 KB Output is correct
11 Correct 51 ms 2484 KB Output is correct
12 Correct 36 ms 2420 KB Output is correct
13 Correct 42 ms 2500 KB Output is correct
14 Correct 39 ms 2512 KB Output is correct
15 Correct 43 ms 2388 KB Output is correct
16 Correct 40 ms 2480 KB Output is correct
17 Correct 43 ms 2536 KB Output is correct
18 Correct 380 ms 16808 KB Output is correct
19 Correct 389 ms 16852 KB Output is correct
20 Correct 419 ms 16840 KB Output is correct
21 Correct 49 ms 2432 KB Output is correct
22 Correct 39 ms 2512 KB Output is correct
23 Correct 129 ms 8632 KB Output is correct

Subtask #7
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 212 KB Output is correct
2 Correct 43 ms 2484 KB Output is correct
3 Correct 41 ms 2492 KB Output is correct
4 Correct 447 ms 16864 KB Output is correct
5 Correct 53 ms 2512 KB Output is correct
6 Correct 44 ms 2512 KB Output is correct
7 Correct 43 ms 2428 KB Output is correct
8 Correct 46 ms 2520 KB Output is correct
9 Correct 44 ms 2388 KB Output is correct
10 Correct 47 ms 2500 KB Output is correct
11 Correct 52 ms 2488 KB Output is correct
12 Correct 40 ms 2520 KB Output is correct
13 Correct 48 ms 2500 KB Output is correct
14 Correct 486 ms 16860 KB Output is correct
15 Correct 43 ms 2512 KB Output is correct
16 Correct 417 ms 16872 KB Output is correct
17 Correct 395 ms 16748 KB Output is correct
18 Correct 0 ms 212 KB Output is correct

Subtask #8
0 / 30.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 212 KB Output is correct
2 Correct 4 ms 600 KB Output is correct
3 Correct 4 ms 600 KB Output is correct
4 Correct 1 ms 212 KB Output is correct
5 Correct 0 ms 212 KB Output is correct
6 Correct 0 ms 212 KB Output is correct
7 Correct 0 ms 212 KB Output is correct
8 Correct 0 ms 212 KB Output is correct
9 Correct 0 ms 212 KB Output is correct
10 Correct 0 ms 212 KB Output is correct
11 Correct 0 ms 212 KB Output is correct
12 Correct 0 ms 212 KB Output is correct
13 Correct 1 ms 212 KB Output is correct
14 Correct 1 ms 212 KB Output is correct
15 Correct 1 ms 212 KB Output is correct
16 Correct 6 ms 600 KB Output is correct
17 Correct 47 ms 2492 KB Output is correct
18 Correct 0 ms 212 KB Output is correct
19 Correct 0 ms 212 KB Output is correct
20 Incorrect 0 ms 212 KB Output isn't correct
21 Halted 0 ms 0 KB -