oj.uz

Submission #133277

# Submission time Handle Problem Language Result Execution time Memory
133277 2019-07-20T10:35:16 Z mbrc Strange Device (APIO19_strange_device) C++14
100 / 100
 747 ms 19008 KB 
#define DEBUG
// #define FASTIO

#include <cstring>
#include <cassert>
#include <utility>
#include <iostream>
#include <cstdio>
#include <iomanip>
#include <bitset>
#include <chrono>
#include <cstdlib>
#include <functional>
#include <tuple>
#include <climits>
#include <limits>
#include <deque>
#include <list>
#include <array>
#include <stack>
#include <queue>
#include <random>
#include <complex>
#include <string>
#include <vector>
#include <set>
#include <map>
#include <unordered_map>
#include <unordered_set>
#include <algorithm>

#define F first
#define S second 
#define pb push_back
#define endl "\n"

#ifdef FASTIO

#define pr(x) printf("%d", x)
#define ps    printf(" ")
#define endc  printf("\n")
#define pl(x) printf("%lld", x)
#define pf(x) printf("%lf", x)
#define sc(x) scanf("%d", &x)
#define sl(x) scanf("%lld", &x)
#define sf(x) scanf("%lf", &x)
#define IOS 

#endif

#ifndef FASTIO
    #define IOS { ios :: sync_with_stdio(false); cin.tie(0); }
#endif

#ifdef DEBUG
    #define dbg(s) {s;}
#endif

#ifndef DEBUG
    #define dbg(s)
#endif

using namespace std;

mt19937 rng(chrono::steady_clock::now().time_since_epoch().count());
int grand(int x) { // from [0, n-1]
    return uniform_int_distribution<int>(0, x - 1)(rng);
}

#define int ll
#define i32 int32_t
#define all(v) (v).begin(),(v).end()

typedef long long ll;
typedef long double ld;
typedef pair< int, int > pii;
typedef pair< ll, ll > pll;

inline string ps(pii z) {
    stringstream ss; ss << "[" << z.F << ", " << z.S << "]";
    return ss.str();
}

ll gcd(ll x, ll y) {
    if (x < y) return gcd(y, x);
    if (y == 0) return x;
    return gcd(y, x % y);
} 

const ll mod = 1e9 + 7;

ll modexp(ll x, ll ex) {
    ll ans = 1ll;
    while (ex > 0) {
        if (ex & 1ll) ans = (ans * x) % mod;
        ex >>= 1ll;
        x = (x * x) % mod;
    }
    return ans;
}

const int maxn = 1e6 + 7;

const ll inf = 1e18 + 7;

vector < pii > v;

i32 main() {
    //freopen("<file>.in", "r", stdin);
    //freopen("<file>.out", "w", stdout);

    IOS;
    
    int n, A, B; cin >> n >> A >> B;
    int g = gcd(A, B + 1); A /= g;
    if (A >= inf / B) A = inf;
    else A *= B;

    for (int j = 1; j <= n; j++) {
        int l, r; cin >> l >> r;
        if (r - l >= A) {
            cout << A << endl; return 0;
        }
        if (l <= A * (r / A)) {
            v.pb({0, r % A});
            if (l < A * (r / A))
                v.pb({l % A, A - 1});
        } else {
            v.pb({l % A, r % A});
        }
    }

    sort(all(v));
    
    int ans = 0;

    for (int j = 0; j < v.size(); ) {
        int i = j; pii ci = v[j];
        while (i + 1 < v.size() && v[i + 1].F <= ci.S) {
            i++; ci.S = max(ci.S, v[i].S);
        }
        j = i + 1;
        ans += ci.S - ci.F + 1;
    }
    cout << ans << endl;
}

Compilation message

strange_device.cpp: In function 'int32_t main()':
strange_device.cpp:137:23: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
     for (int j = 0; j < v.size(); ) {
                     ~~^~~~~~~~~~
strange_device.cpp:139:22: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
         while (i + 1 < v.size() && v[i + 1].F <= ci.S) {
                ~~~~~~^~~~~~~~~~

Subtask #1
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 376 KB Output is correct
2 Correct 8 ms 1016 KB Output is correct
3 Correct 9 ms 1016 KB Output is correct
4 Correct 2 ms 376 KB Output is correct
5 Correct 2 ms 376 KB Output is correct
6 Correct 2 ms 376 KB Output is correct
7 Correct 2 ms 376 KB Output is correct
8 Correct 2 ms 380 KB Output is correct
9 Correct 2 ms 376 KB Output is correct
10 Correct 2 ms 376 KB Output is correct
11 Correct 2 ms 376 KB Output is correct
12 Correct 2 ms 376 KB Output is correct
13 Correct 0 ms 376 KB Output is correct
14 Correct 2 ms 376 KB Output is correct
15 Correct 2 ms 376 KB Output is correct
16 Correct 9 ms 1036 KB Output is correct
17 Correct 69 ms 3312 KB Output is correct
18 Correct 2 ms 376 KB Output is correct

Subtask #2
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 376 KB Output is correct
2 Correct 2 ms 376 KB Output is correct
3 Correct 2 ms 376 KB Output is correct
4 Correct 2 ms 376 KB Output is correct
5 Correct 2 ms 348 KB Output is correct

Subtask #3
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 376 KB Output is correct
2 Correct 3 ms 376 KB Output is correct
3 Correct 3 ms 348 KB Output is correct
4 Correct 3 ms 376 KB Output is correct
5 Correct 449 ms 17736 KB Output is correct

Subtask #4
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 376 KB Output is correct
2 Correct 610 ms 19008 KB Output is correct
3 Correct 604 ms 17720 KB Output is correct
4 Correct 603 ms 17696 KB Output is correct

Subtask #5
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 376 KB Output is correct
2 Correct 610 ms 19008 KB Output is correct
3 Correct 604 ms 17720 KB Output is correct
4 Correct 603 ms 17696 KB Output is correct
5 Correct 2 ms 376 KB Output is correct
6 Correct 608 ms 17700 KB Output is correct
7 Correct 625 ms 17628 KB Output is correct
8 Correct 626 ms 17556 KB Output is correct
9 Correct 667 ms 17480 KB Output is correct

Subtask #6
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 376 KB Output is correct
2 Correct 610 ms 19008 KB Output is correct
3 Correct 604 ms 17720 KB Output is correct
4 Correct 603 ms 17696 KB Output is correct
5 Correct 2 ms 376 KB Output is correct
6 Correct 61 ms 3052 KB Output is correct
7 Correct 66 ms 3104 KB Output is correct
8 Correct 61 ms 3184 KB Output is correct
9 Correct 64 ms 3156 KB Output is correct
10 Correct 61 ms 3300 KB Output is correct
11 Correct 65 ms 3200 KB Output is correct
12 Correct 61 ms 3180 KB Output is correct
13 Correct 68 ms 3224 KB Output is correct
14 Correct 61 ms 3180 KB Output is correct
15 Correct 67 ms 3152 KB Output is correct
16 Correct 68 ms 3312 KB Output is correct
17 Correct 64 ms 3304 KB Output is correct
18 Correct 614 ms 17400 KB Output is correct
19 Correct 719 ms 17416 KB Output is correct
20 Correct 673 ms 17488 KB Output is correct
21 Correct 68 ms 3508 KB Output is correct
22 Correct 61 ms 3052 KB Output is correct
23 Correct 195 ms 10852 KB Output is correct

Subtask #7
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 376 KB Output is correct
2 Correct 67 ms 3464 KB Output is correct
3 Correct 68 ms 3080 KB Output is correct
4 Correct 686 ms 17252 KB Output is correct
5 Correct 67 ms 2924 KB Output is correct
6 Correct 67 ms 2928 KB Output is correct
7 Correct 67 ms 2928 KB Output is correct
8 Correct 69 ms 2932 KB Output is correct
9 Correct 65 ms 2920 KB Output is correct
10 Correct 67 ms 2928 KB Output is correct
11 Correct 68 ms 2924 KB Output is correct
12 Correct 60 ms 2924 KB Output is correct
13 Correct 69 ms 2972 KB Output is correct
14 Correct 681 ms 17340 KB Output is correct
15 Correct 67 ms 3308 KB Output is correct
16 Correct 618 ms 17480 KB Output is correct
17 Correct 607 ms 17376 KB Output is correct
18 Correct 2 ms 376 KB Output is correct

Subtask #8
30.0 / 30.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 376 KB Output is correct
2 Correct 8 ms 1016 KB Output is correct
3 Correct 9 ms 1016 KB Output is correct
4 Correct 2 ms 376 KB Output is correct
5 Correct 2 ms 376 KB Output is correct
6 Correct 2 ms 376 KB Output is correct
7 Correct 2 ms 376 KB Output is correct
8 Correct 2 ms 380 KB Output is correct
9 Correct 2 ms 376 KB Output is correct
10 Correct 2 ms 376 KB Output is correct
11 Correct 2 ms 376 KB Output is correct
12 Correct 2 ms 376 KB Output is correct
13 Correct 0 ms 376 KB Output is correct
14 Correct 2 ms 376 KB Output is correct
15 Correct 2 ms 376 KB Output is correct
16 Correct 9 ms 1036 KB Output is correct
17 Correct 69 ms 3312 KB Output is correct
18 Correct 2 ms 376 KB Output is correct
19 Correct 2 ms 376 KB Output is correct
20 Correct 2 ms 376 KB Output is correct
21 Correct 2 ms 376 KB Output is correct
22 Correct 2 ms 376 KB Output is correct
23 Correct 2 ms 348 KB Output is correct
24 Correct 2 ms 376 KB Output is correct
25 Correct 3 ms 376 KB Output is correct
26 Correct 3 ms 348 KB Output is correct
27 Correct 3 ms 376 KB Output is correct
28 Correct 449 ms 17736 KB Output is correct
29 Correct 2 ms 376 KB Output is correct
30 Correct 610 ms 19008 KB Output is correct
31 Correct 604 ms 17720 KB Output is correct
32 Correct 603 ms 17696 KB Output is correct
33 Correct 2 ms 376 KB Output is correct
34 Correct 608 ms 17700 KB Output is correct
35 Correct 625 ms 17628 KB Output is correct
36 Correct 626 ms 17556 KB Output is correct
37 Correct 667 ms 17480 KB Output is correct
38 Correct 2 ms 376 KB Output is correct
39 Correct 61 ms 3052 KB Output is correct
40 Correct 66 ms 3104 KB Output is correct
41 Correct 61 ms 3184 KB Output is correct
42 Correct 64 ms 3156 KB Output is correct
43 Correct 61 ms 3300 KB Output is correct
44 Correct 65 ms 3200 KB Output is correct
45 Correct 61 ms 3180 KB Output is correct
46 Correct 68 ms 3224 KB Output is correct
47 Correct 61 ms 3180 KB Output is correct
48 Correct 67 ms 3152 KB Output is correct
49 Correct 68 ms 3312 KB Output is correct
50 Correct 64 ms 3304 KB Output is correct
51 Correct 614 ms 17400 KB Output is correct
52 Correct 719 ms 17416 KB Output is correct
53 Correct 673 ms 17488 KB Output is correct
54 Correct 68 ms 3508 KB Output is correct
55 Correct 61 ms 3052 KB Output is correct
56 Correct 195 ms 10852 KB Output is correct
57 Correct 2 ms 376 KB Output is correct
58 Correct 67 ms 3464 KB Output is correct
59 Correct 68 ms 3080 KB Output is correct
60 Correct 686 ms 17252 KB Output is correct
61 Correct 67 ms 2924 KB Output is correct
62 Correct 67 ms 2928 KB Output is correct
63 Correct 67 ms 2928 KB Output is correct
64 Correct 69 ms 2932 KB Output is correct
65 Correct 65 ms 2920 KB Output is correct
66 Correct 67 ms 2928 KB Output is correct
67 Correct 68 ms 2924 KB Output is correct
68 Correct 60 ms 2924 KB Output is correct
69 Correct 69 ms 2972 KB Output is correct
70 Correct 681 ms 17340 KB Output is correct
71 Correct 67 ms 3308 KB Output is correct
72 Correct 618 ms 17480 KB Output is correct
73 Correct 607 ms 17376 KB Output is correct
74 Correct 2 ms 376 KB Output is correct
75 Correct 2 ms 376 KB Output is correct
76 Correct 2 ms 376 KB Output is correct
77 Correct 2 ms 376 KB Output is correct
78 Correct 2 ms 376 KB Output is correct
79 Correct 8 ms 1144 KB Output is correct
80 Correct 705 ms 17564 KB Output is correct
81 Correct 747 ms 17488 KB Output is correct
82 Correct 652 ms 17488 KB Output is correct
83 Correct 672 ms 17400 KB Output is correct
84 Correct 676 ms 17596 KB Output is correct
85 Correct 663 ms 17484 KB Output is correct
86 Correct 192 ms 9500 KB Output is correct
87 Correct 2 ms 348 KB Output is correct