oj.uz

Submission #143019

# Submission time Handle Problem Language Result Execution time Memory
143019 2019-08-12T15:32:10 Z karma Strange Device (APIO19_strange_device) C++11
100 / 100
 712 ms 19224 KB 
#include<bits/stdc++.h>
#include<ext/pb_ds/assoc_container.hpp>
#include<ext/pb_ds/tree_policy.hpp>
#define FileName      "test"
#define ll            long long
#define ld            long double
#define ull           unsigned long long
#define Debug(x)      cerr << #x << "is " << x << '\n';
#define pb            emplace_back
#define mp            make_pair
#define x             first
#define y             second
//#define LuckyAurora
//#pragma GCC target ("avx2")
#pragma GCC optimization ("O3")
//#pragma GCC optimization ("unroll-loops")
//#pragma GCC target("sse,sse2,sse3,ssse3,sse4,popcnt,abm,mmx,avx,avx2,tune=native")

using namespace std;

template<typename T> inline void Cin(T &x)
{
    char c;
    T sign = 1;
    x = 0;
    for (c = getchar(); c < '0' || c > '9'; c = getchar())
        if (c == '-') sign = -1;
    for (; c >= '0' && c <= '9'; c = getchar())
        x = x * 10 + c - '0';
    x *= sign;
}
template <typename T> inline void Out(T x) {if(x > 9) Out(x / 10); putchar(x % 10 + '0');}
template <typename T> inline void Cout(T x, char c) {if(x < 0) putchar('-'); x = abs(x); Out(x); putchar(c);}
template <typename T, typename... Args> inline void Cin(T& a, Args&... args) {Cin(a);Cin(args...);}
template <typename T, typename... Args> inline void Cout(T a, char c, Args... args) {Cout(a, c);Cout(args...);}

typedef pair<int, int> pii;
const int N = int(1e6) + 1;

struct TIrene {
    ll l, r;
    TIrene(ll l = 0, ll r = 0): l(l), r(r) {}
    bool operator<(const TIrene& o)const& {
        return l < o.l || (l == o.l && r < o.r);
    }
};
vector<TIrene> v;
int n;
ll A, B, l, r, irene, Irene, low, high, res;
const ll inf = (ll)1e18;

// A / GCD(A, B + 1) * B

ll GCD(ll a, ll b)
{
    ll r;
    if(a < b) swap(a, b);
    while(b) {
        r = a % b;
        a = b, b = r;
    }
    return a;
}

ll Pos(ll x)
{
    if(inf >= Irene) return x % Irene;
    return x;
}

void Enter()
{
     cin >> n >> A >> B;
     irene = A / GCD(A, B + 1);
     Irene = LLONG_MAX;
     if(inf / irene >= B) Irene = B * irene;
     for(int i = 0; i < n; ++i) {
        cin >> l >> r;
        if(r - l + 1 >= Irene) {cout << Irene; exit(0);}
        low = Pos(l), high = Pos(r);
        //cout << low << ' ' << high << '\n';
        if(high >= low) v.pb(low, high);
        else v.pb(low, Irene - 1), v.pb(0, high);
     }
     sort(v.begin(), v.end());
}

void Solve()
{
     res = 0, high = -2, low = -1;
     for(int i = 0; i < int(v.size()); ++i) {
        if(v[i].l > high) {
            res += high - low + 1;
            low = v[i].l, high = v[i].r;
        } else high = max(high, v[i].r);
     }
     res += high - low + 1;
     cout << res;
}

int main()
{
    ios_base::sync_with_stdio(0);
    cin.tie(0); cout.tie(0);
    if(fopen(FileName".inp", "r")) {
        freopen(FileName".inp", "r", stdin);
        freopen(FileName".out", "w", stdout);
    }

    /*int nTest; cin >> nTest;
    while(nTest --)*/ Enter(), Solve();

    return 0;
}

Compilation message

strange_device.cpp:15:0: warning: ignoring #pragma GCC optimization [-Wunknown-pragmas]
 #pragma GCC optimization ("O3")
 
strange_device.cpp: In function 'int main()':
strange_device.cpp:106:16: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result]
         freopen(FileName".inp", "r", stdin);
         ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~
strange_device.cpp:107:16: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result]
         freopen(FileName".out", "w", stdout);
         ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~

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 256 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 256 KB Output is correct
12 Correct 2 ms 376 KB Output is correct
13 Correct 2 ms 256 KB Output is correct
14 Correct 2 ms 376 KB Output is correct
15 Correct 2 ms 376 KB Output is correct
16 Correct 8 ms 1144 KB Output is correct
17 Correct 67 ms 3896 KB Output is correct
18 Correct 2 ms 256 KB Output is correct

Subtask #2
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 9 ms 404 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 296 KB Output is correct
5 Correct 2 ms 376 KB Output is correct

Subtask #3
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 420 KB Output is correct
2 Correct 3 ms 376 KB Output is correct
3 Correct 3 ms 376 KB Output is correct
4 Correct 3 ms 376 KB Output is correct
5 Correct 458 ms 18784 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 605 ms 17404 KB Output is correct
3 Correct 606 ms 18864 KB Output is correct
4 Correct 607 ms 19028 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 605 ms 17404 KB Output is correct
3 Correct 606 ms 18864 KB Output is correct
4 Correct 607 ms 19028 KB Output is correct
5 Correct 2 ms 376 KB Output is correct
6 Correct 608 ms 19060 KB Output is correct
7 Correct 618 ms 19180 KB Output is correct
8 Correct 601 ms 19116 KB Output is correct
9 Correct 662 ms 19224 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 605 ms 17404 KB Output is correct
3 Correct 606 ms 18864 KB Output is correct
4 Correct 607 ms 19028 KB Output is correct
5 Correct 2 ms 376 KB Output is correct
6 Correct 62 ms 4848 KB Output is correct
7 Correct 67 ms 4720 KB Output is correct
8 Correct 63 ms 4756 KB Output is correct
9 Correct 64 ms 4720 KB Output is correct
10 Correct 61 ms 4512 KB Output is correct
11 Correct 65 ms 4592 KB Output is correct
12 Correct 61 ms 4592 KB Output is correct
13 Correct 67 ms 4496 KB Output is correct
14 Correct 61 ms 4616 KB Output is correct
15 Correct 67 ms 4588 KB Output is correct
16 Correct 66 ms 4564 KB Output is correct
17 Correct 63 ms 4700 KB Output is correct
18 Correct 621 ms 19000 KB Output is correct
19 Correct 597 ms 19016 KB Output is correct
20 Correct 660 ms 18772 KB Output is correct
21 Correct 68 ms 4428 KB Output is correct
22 Correct 62 ms 4828 KB Output is correct
23 Correct 195 ms 10892 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 82 ms 4956 KB Output is correct
3 Correct 66 ms 4964 KB Output is correct
4 Correct 685 ms 19112 KB Output is correct
5 Correct 68 ms 4976 KB Output is correct
6 Correct 67 ms 4848 KB Output is correct
7 Correct 66 ms 4976 KB Output is correct
8 Correct 67 ms 4824 KB Output is correct
9 Correct 66 ms 4848 KB Output is correct
10 Correct 67 ms 4844 KB Output is correct
11 Correct 67 ms 4892 KB Output is correct
12 Correct 60 ms 4816 KB Output is correct
13 Correct 66 ms 4844 KB Output is correct
14 Correct 641 ms 18972 KB Output is correct
15 Correct 65 ms 4692 KB Output is correct
16 Correct 608 ms 18344 KB Output is correct
17 Correct 608 ms 18464 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 256 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 256 KB Output is correct
12 Correct 2 ms 376 KB Output is correct
13 Correct 2 ms 256 KB Output is correct
14 Correct 2 ms 376 KB Output is correct
15 Correct 2 ms 376 KB Output is correct
16 Correct 8 ms 1144 KB Output is correct
17 Correct 67 ms 3896 KB Output is correct
18 Correct 2 ms 256 KB Output is correct
19 Correct 9 ms 404 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 296 KB Output is correct
23 Correct 2 ms 376 KB Output is correct
24 Correct 2 ms 420 KB Output is correct
25 Correct 3 ms 376 KB Output is correct
26 Correct 3 ms 376 KB Output is correct
27 Correct 3 ms 376 KB Output is correct
28 Correct 458 ms 18784 KB Output is correct
29 Correct 2 ms 376 KB Output is correct
30 Correct 605 ms 17404 KB Output is correct
31 Correct 606 ms 18864 KB Output is correct
32 Correct 607 ms 19028 KB Output is correct
33 Correct 2 ms 376 KB Output is correct
34 Correct 608 ms 19060 KB Output is correct
35 Correct 618 ms 19180 KB Output is correct
36 Correct 601 ms 19116 KB Output is correct
37 Correct 662 ms 19224 KB Output is correct
38 Correct 2 ms 376 KB Output is correct
39 Correct 62 ms 4848 KB Output is correct
40 Correct 67 ms 4720 KB Output is correct
41 Correct 63 ms 4756 KB Output is correct
42 Correct 64 ms 4720 KB Output is correct
43 Correct 61 ms 4512 KB Output is correct
44 Correct 65 ms 4592 KB Output is correct
45 Correct 61 ms 4592 KB Output is correct
46 Correct 67 ms 4496 KB Output is correct
47 Correct 61 ms 4616 KB Output is correct
48 Correct 67 ms 4588 KB Output is correct
49 Correct 66 ms 4564 KB Output is correct
50 Correct 63 ms 4700 KB Output is correct
51 Correct 621 ms 19000 KB Output is correct
52 Correct 597 ms 19016 KB Output is correct
53 Correct 660 ms 18772 KB Output is correct
54 Correct 68 ms 4428 KB Output is correct
55 Correct 62 ms 4828 KB Output is correct
56 Correct 195 ms 10892 KB Output is correct
57 Correct 2 ms 376 KB Output is correct
58 Correct 82 ms 4956 KB Output is correct
59 Correct 66 ms 4964 KB Output is correct
60 Correct 685 ms 19112 KB Output is correct
61 Correct 68 ms 4976 KB Output is correct
62 Correct 67 ms 4848 KB Output is correct
63 Correct 66 ms 4976 KB Output is correct
64 Correct 67 ms 4824 KB Output is correct
65 Correct 66 ms 4848 KB Output is correct
66 Correct 67 ms 4844 KB Output is correct
67 Correct 67 ms 4892 KB Output is correct
68 Correct 60 ms 4816 KB Output is correct
69 Correct 66 ms 4844 KB Output is correct
70 Correct 641 ms 18972 KB Output is correct
71 Correct 65 ms 4692 KB Output is correct
72 Correct 608 ms 18344 KB Output is correct
73 Correct 608 ms 18464 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 3 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 670 ms 18760 KB Output is correct
81 Correct 677 ms 18892 KB Output is correct
82 Correct 642 ms 18816 KB Output is correct
83 Correct 645 ms 18632 KB Output is correct
84 Correct 658 ms 18612 KB Output is correct
85 Correct 712 ms 18604 KB Output is correct
86 Correct 193 ms 11872 KB Output is correct
87 Correct 2 ms 376 KB Output is correct