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Submission #250173

# Submission time Handle Problem Language Result Execution time Memory
250173 2020-07-17T05:43:54 Z WhaleVomit Strange Device (APIO19_strange_device) C++14
35 / 100
 612 ms 17156 KB 
#include <bits/stdc++.h>
using namespace std;

#define f first
#define s second
#define pb push_back
#define mp make_pair
#define all(v) v.begin(), v.end()
#define sz(v) (int)v.size()

#define MOO(i, a, b) for(int i=a; i<b; i++)
#define M00(i, a) for(int i=0; i<a; i++)
#define MOOd(i,a,b) for(int i = (b)-1; i >= a; i--)
#define M00d(i,a) for(int i = (a)-1; i>=0; i--)

#define FAST ios::sync_with_stdio(0); cin.tie(0);
#define finish(x) return cout << x << '\n', 0;
#define dbg(x) cerr << ">>> " << #x << " = " << x << "\n";
#define _ << " _ " <<

template<class T> bool ckmin(T& a, const T& b) {return b < a ? a = b, 1 : 0;}
template<class T> bool ckmax(T& a, const T& b) {return a < b ? a = b, 1 : 0;}

typedef long long ll;
typedef long double ld;
typedef vector<int> vi;
typedef pair<int,int> pi;
typedef pair<ld,ld> pd;
typedef complex<ld> cd;

const int MAX_N = 1000010;
const ll inf = (ll)(2e18);
int n;
ll A, B;

ll gcd(ll a, ll b) {
    if(a > b) swap(a,b);
    if(a == 0) return b;
    return gcd(b%a, a);
}

bool overflow(ll a, ll b) {
    ll val = a*b;
    if(val / b == a) return 0;
    return 1;
}

int main() { FAST
    cin >> n >> A >> B;
    ll period = A/gcd(A,B+1);
    if(overflow(B, period)) {
        period = inf;
    } else {
        period = B * period;
    }
    vector<pair<ll,ll>> intervals;
    M00(i, n) {
        ll l, r; cin >> l >> r;
        if(r-l+1 >= period) {
            finish(period);
        }
        l %= period;
        r %= period;
        if(l <= r) intervals.pb(mp(l, r));
        else {
            intervals.pb(mp(l, period-1));
            intervals.pb(mp(0,r));
        }
    }
    sort(all(intervals));
    ll last = -1;
    ll res = 0;
    for(pair<ll,ll> interval: intervals) {
        if(interval.f > last+1) {
            res += interval.s - interval.f + 1;
        } else {
            if(interval.s > last) res += interval.s - last;
        }
        ckmax(last, interval.s);
    }
    finish(res);
}

Subtask #1
0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 384 KB Output is correct
2 Correct 5 ms 768 KB Output is correct
3 Correct 9 ms 768 KB Output is correct
4 Correct 0 ms 384 KB Output is correct
5 Correct 1 ms 384 KB Output is correct
6 Correct 0 ms 384 KB Output is correct
7 Correct 0 ms 384 KB Output is correct
8 Correct 0 ms 384 KB Output is correct
9 Correct 0 ms 384 KB Output is correct
10 Correct 0 ms 384 KB Output is correct
11 Correct 1 ms 384 KB Output is correct
12 Correct 0 ms 384 KB Output is correct
13 Correct 0 ms 384 KB Output is correct
14 Correct 1 ms 384 KB Output is correct
15 Correct 0 ms 384 KB Output is correct
16 Correct 7 ms 768 KB Output is correct
17 Correct 57 ms 2544 KB Output is correct
18 Incorrect 1 ms 384 KB Output isn't correct

Subtask #2
0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 384 KB Output is correct
2 Correct 1 ms 384 KB Output is correct
3 Correct 1 ms 384 KB Output is correct
4 Correct 1 ms 384 KB Output is correct
5 Incorrect 0 ms 384 KB Output isn't correct

Subtask #3
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 384 KB Output is correct
2 Correct 1 ms 384 KB Output is correct
3 Correct 1 ms 384 KB Output is correct
4 Correct 4 ms 384 KB Output is correct
5 Correct 378 ms 16852 KB Output is correct

Subtask #4
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 384 KB Output is correct
2 Correct 511 ms 17032 KB Output is correct
3 Correct 553 ms 16852 KB Output is correct
4 Correct 612 ms 17156 KB Output is correct

Subtask #5
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 384 KB Output is correct
2 Correct 511 ms 17032 KB Output is correct
3 Correct 553 ms 16852 KB Output is correct
4 Correct 612 ms 17156 KB Output is correct
5 Correct 0 ms 384 KB Output is correct
6 Correct 591 ms 16852 KB Output is correct
7 Correct 524 ms 16852 KB Output is correct
8 Correct 513 ms 16892 KB Output is correct
9 Correct 544 ms 16852 KB Output is correct

Subtask #6
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 384 KB Output is correct
2 Correct 511 ms 17032 KB Output is correct
3 Correct 553 ms 16852 KB Output is correct
4 Correct 612 ms 17156 KB Output is correct
5 Correct 0 ms 384 KB Output is correct
6 Correct 49 ms 2544 KB Output is correct
7 Correct 53 ms 2544 KB Output is correct
8 Correct 71 ms 2540 KB Output is correct
9 Correct 50 ms 2544 KB Output is correct
10 Correct 49 ms 2552 KB Output is correct
11 Correct 51 ms 2544 KB Output is correct
12 Correct 47 ms 2548 KB Output is correct
13 Correct 51 ms 2544 KB Output is correct
14 Correct 50 ms 2552 KB Output is correct
15 Correct 53 ms 2548 KB Output is correct
16 Correct 54 ms 2544 KB Output is correct
17 Correct 52 ms 2544 KB Output is correct
18 Correct 524 ms 16852 KB Output is correct
19 Correct 487 ms 16852 KB Output is correct
20 Correct 563 ms 16852 KB Output is correct
21 Correct 55 ms 2544 KB Output is correct
22 Correct 47 ms 2672 KB Output is correct
23 Correct 160 ms 8672 KB Output is correct

Subtask #7
0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 384 KB Output is correct
2 Correct 54 ms 2544 KB Output is correct
3 Correct 54 ms 2544 KB Output is correct
4 Correct 570 ms 16852 KB Output is correct
5 Correct 53 ms 2544 KB Output is correct
6 Correct 51 ms 2544 KB Output is correct
7 Correct 55 ms 2552 KB Output is correct
8 Correct 55 ms 2544 KB Output is correct
9 Correct 53 ms 2544 KB Output is correct
10 Correct 54 ms 2540 KB Output is correct
11 Correct 55 ms 2540 KB Output is correct
12 Correct 49 ms 2544 KB Output is correct
13 Correct 55 ms 2552 KB Output is correct
14 Correct 572 ms 16856 KB Output is correct
15 Correct 54 ms 2552 KB Output is correct
16 Correct 515 ms 16852 KB Output is correct
17 Correct 497 ms 16980 KB Output is correct
18 Incorrect 0 ms 384 KB Output isn't correct

Subtask #8
0 / 30.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 384 KB Output is correct
2 Correct 5 ms 768 KB Output is correct
3 Correct 9 ms 768 KB Output is correct
4 Correct 0 ms 384 KB Output is correct
5 Correct 1 ms 384 KB Output is correct
6 Correct 0 ms 384 KB Output is correct
7 Correct 0 ms 384 KB Output is correct
8 Correct 0 ms 384 KB Output is correct
9 Correct 0 ms 384 KB Output is correct
10 Correct 0 ms 384 KB Output is correct
11 Correct 1 ms 384 KB Output is correct
12 Correct 0 ms 384 KB Output is correct
13 Correct 0 ms 384 KB Output is correct
14 Correct 1 ms 384 KB Output is correct
15 Correct 0 ms 384 KB Output is correct
16 Correct 7 ms 768 KB Output is correct
17 Correct 57 ms 2544 KB Output is correct
18 Incorrect 1 ms 384 KB Output isn't correct