oj.uz

Submission #1112926

# Submission time Handle Problem Language Result Execution time Memory
1112926 2024-11-15T09:21:32 Z modwwe Event Hopping (BOI22_events) C++17
100 / 100
 148 ms 73932 KB 
#pragma GCC optimize("Ofast,unroll-loops")
//#pragma GCC optimize("conserve-stack")
#include<bits/stdc++.h>
#define int  long long
#define ll long long
#define down cout<<'\n';
#define debug cout<<" cucuucucuuu",down
#define NHP     ios_base::sync_with_stdio(0);cout.tie(0);cin.tie(0);
#define modwwe  int t;cin>>t; while(t--)
#define bit(i,j) (i>>j&1)
#define sobit(a) __builtin_popcountll(a)
#define task "test"
#define fin(x) freopen(x".inp","r",stdin)
#define fou(x) freopen(x".ans","w",stdout)
#define pb push_back
#define mask(k) (1<<k)
#define mp make_pair
#define checktime   cerr << (double)clock() / CLOCKS_PER_SEC * 1000  << " ms";
using namespace std;
#define getchar_unlocked getchar

inline int scan()
{
    char c = getchar_unlocked();
    int x = 0;
    while (c < '0' || c > '9')
    {
        c = getchar_unlocked();
    }
    while (c >= '0' && c <= '9')
    {
        x = (x << 1) + (x << 3) + c - '0';
        c = getchar_unlocked();
    }
    return x;
}
void phongbeo();
const int inf = 1e14;
const ll mod2 = 1e9 + 7;
const int  mod1 = 998244353;
const ll base=67;
int add(int x,int y)
{
    if(x+y>=mod2) x-=mod2;
    if(x+y<0)x+=mod2;
    return x+y;
}
struct icd
{
    long double a;
    int b;
};
struct ib
{
    int a;
    int b;
};
struct ic
{
    int a, b, c;
};
struct id
{
    int a, b, c, d;
};
struct ie
{
    int a, b, c, d, e;

};
ll n, m, s1, s2, s4, s3, sf, k, s5, s6, mx, s7, s8, s9, mx2, res, dem2 = 0, dem = 0, s33, dem3, dem4, mid, l2, r2, center;
int  i, s10, s12,k1,k2,k3,s11,t,lim,w,l,r,p ;
int kk;
int el = 19;
main()
{
    if(fopen(task".inp","r"))
    {
        fin(task);
        fou(task);
    }
    NHP
    /// cin>>s1;
    // modwwe
    phongbeo();
    // checktime
}
ib minn[18][200001];
int st[17][100001];
ib a[100001];
vector<int> v;
ib mer(ib a,ib b)
{
    if(a.a<=b.a) return a;
    return b;
}
int getmin(int l,int r)
{
    int k=31-__builtin_clz(r-l+1);
    return mer(minn[k][l],minn[k][r-mask(k)+1]).b;
}
void phongbeo()
{
    cin>>n>>k;
    for(int i=1; i<=n; i++)
        cin>>a[i].a>>a[i].b,v.pb(a[i].b),v.pb(a[i].a);
    sort(v.begin(),v.end());
    v.erase(unique(v.begin(),v.end()),v.end());
    m=v.size();
    for(int i=1; i<=n; i++)
    {
        a[i].a=lower_bound(v.begin(),v.end(),a[i].a)-v.begin()+1;
        a[i].b=lower_bound(v.begin(),v.end(),a[i].b)-v.begin()+1;
    }
    for(int i=1; i<=m; i++)
        minn[0][i]= {m+1,i};
    for(int i=1; i<=n; i++)
    {
        if(a[i].a<=minn[0][a[i].b].a)
            minn[0][a[i].b]= {a[i].a,i};
    }
    for(int i=1; i<18; i++)
        for(int j=1; j+mask(i)-1<=m; j++)
            minn[i][j]=mer(minn[i-1][j],minn[i-1][j+mask(i-1)]);
    for(int i=1; i<=n; i++)
    {
        st[0][i]=getmin(a[i].a,a[i].b);
    }
    for(int i=1; i<17; i++)
        for(int j=1; j<=n; j++)
            st[i][j]=st[i-1][st[i-1][j]];
    while(k--)
    {
        down
        cin>>l>>r;
        if(a[l].b>a[r].b)
        {
            cout<<"impossible";
            continue;
        }
        else if(l==r)
        {
            cout<<0;
            continue;
        }
        else if(a[l].b>=a[r].a&&a[r].b>=a[l].b)
        {
            cout<<1;
            continue;
        }
        else
        {
            s4=0;
            for(int i=16; i>=0; --i)
                if(a[st[i][r]].a>a[l].b)
                {
                    s4=s4+(1<<i);
                    r=st[i][r];
                }
            if(s4==131071)
            {
                cout<<"impossible";
                continue;
            }
            cout<<s4+2;
        }
    }
}

Compilation message

events.cpp:75:1: warning: ISO C++ forbids declaration of 'main' with no type [-Wreturn-type]
   75 | main()
      | ^~~~
events.cpp: In function 'void phongbeo()':
events.cpp:124:59: warning: suggest parentheses around '-' inside '<<' [-Wparentheses]
  124 |             minn[i][j]=mer(minn[i-1][j],minn[i-1][j+mask(i-1)]);
      |                                                          ~^~
events.cpp:16:21: note: in definition of macro 'mask'
   16 | #define mask(k) (1<<k)
      |                     ^
events.cpp: In function 'int main()':
events.cpp:13:23: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   13 | #define fin(x) freopen(x".inp","r",stdin)
      |                ~~~~~~~^~~~~~~~~~~~~~~~~~~
events.cpp:79:9: note: in expansion of macro 'fin'
   79 |         fin(task);
      |         ^~~
events.cpp:14:23: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   14 | #define fou(x) freopen(x".ans","w",stdout)
      |                ~~~~~~~^~~~~~~~~~~~~~~~~~~~
events.cpp:80:9: note: in expansion of macro 'fou'
   80 |         fou(task);
      |         ^~~

Subtask #1
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 6480 KB Output is correct
2 Correct 98 ms 45764 KB Output is correct
3 Correct 110 ms 46028 KB Output is correct
4 Correct 139 ms 46016 KB Output is correct
5 Correct 124 ms 49868 KB Output is correct
6 Correct 127 ms 50888 KB Output is correct
7 Correct 130 ms 51904 KB Output is correct
8 Correct 139 ms 73932 KB Output is correct
9 Correct 135 ms 73856 KB Output is correct
10 Correct 103 ms 45504 KB Output is correct
11 Correct 110 ms 56764 KB Output is correct
12 Correct 61 ms 45760 KB Output is correct

Subtask #2
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 6480 KB Output is correct
2 Correct 1 ms 4432 KB Output is correct
3 Correct 2 ms 4944 KB Output is correct
4 Correct 2 ms 4944 KB Output is correct
5 Correct 2 ms 4944 KB Output is correct
6 Correct 3 ms 4900 KB Output is correct
7 Correct 2 ms 4944 KB Output is correct
8 Correct 2 ms 4944 KB Output is correct
9 Correct 2 ms 4688 KB Output is correct

Subtask #3
15.0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 6480 KB Output is correct
2 Correct 1 ms 4432 KB Output is correct
3 Correct 2 ms 4944 KB Output is correct
4 Correct 2 ms 4944 KB Output is correct
5 Correct 2 ms 4944 KB Output is correct
6 Correct 3 ms 4900 KB Output is correct
7 Correct 2 ms 4944 KB Output is correct
8 Correct 2 ms 4944 KB Output is correct
9 Correct 2 ms 4688 KB Output is correct
10 Correct 1 ms 4432 KB Output is correct
11 Correct 1 ms 4688 KB Output is correct
12 Correct 2 ms 6992 KB Output is correct
13 Correct 2 ms 6992 KB Output is correct
14 Correct 2 ms 4944 KB Output is correct
15 Correct 2 ms 4944 KB Output is correct
16 Correct 2 ms 4944 KB Output is correct
17 Correct 2 ms 5200 KB Output is correct
18 Correct 1 ms 4688 KB Output is correct
19 Correct 23 ms 8096 KB Output is correct
20 Correct 26 ms 7796 KB Output is correct
21 Correct 33 ms 8028 KB Output is correct
22 Correct 23 ms 8272 KB Output is correct
23 Correct 22 ms 8272 KB Output is correct
24 Correct 19 ms 8956 KB Output is correct
25 Correct 22 ms 7504 KB Output is correct

Subtask #4
15.0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 6480 KB Output is correct
2 Correct 1 ms 4432 KB Output is correct
3 Correct 2 ms 4944 KB Output is correct
4 Correct 2 ms 4944 KB Output is correct
5 Correct 2 ms 4944 KB Output is correct
6 Correct 3 ms 4900 KB Output is correct
7 Correct 2 ms 4944 KB Output is correct
8 Correct 2 ms 4944 KB Output is correct
9 Correct 2 ms 4688 KB Output is correct
10 Correct 2 ms 4568 KB Output is correct
11 Correct 2 ms 4688 KB Output is correct
12 Correct 2 ms 4944 KB Output is correct
13 Correct 2 ms 6992 KB Output is correct
14 Correct 2 ms 4944 KB Output is correct
15 Correct 3 ms 4944 KB Output is correct
16 Correct 2 ms 4944 KB Output is correct
17 Correct 2 ms 4944 KB Output is correct
18 Correct 2 ms 4688 KB Output is correct
19 Correct 76 ms 43900 KB Output is correct
20 Correct 75 ms 42432 KB Output is correct
21 Correct 85 ms 43720 KB Output is correct
22 Correct 87 ms 53952 KB Output is correct
23 Correct 100 ms 71616 KB Output is correct
24 Correct 99 ms 70604 KB Output is correct
25 Correct 26 ms 20424 KB Output is correct

Subtask #5
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 99 ms 46708 KB Output is correct
2 Correct 125 ms 42952 KB Output is correct
3 Correct 132 ms 45244 KB Output is correct
4 Correct 141 ms 73916 KB Output is correct
5 Correct 113 ms 46272 KB Output is correct
6 Correct 134 ms 73664 KB Output is correct
7 Correct 139 ms 73544 KB Output is correct
8 Correct 124 ms 71616 KB Output is correct
9 Correct 100 ms 71576 KB Output is correct
10 Correct 145 ms 73088 KB Output is correct
11 Correct 124 ms 73080 KB Output is correct
12 Correct 130 ms 72744 KB Output is correct

Subtask #6
30.0 / 30.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 6480 KB Output is correct
2 Correct 98 ms 45764 KB Output is correct
3 Correct 110 ms 46028 KB Output is correct
4 Correct 139 ms 46016 KB Output is correct
5 Correct 124 ms 49868 KB Output is correct
6 Correct 127 ms 50888 KB Output is correct
7 Correct 130 ms 51904 KB Output is correct
8 Correct 139 ms 73932 KB Output is correct
9 Correct 135 ms 73856 KB Output is correct
10 Correct 103 ms 45504 KB Output is correct
11 Correct 110 ms 56764 KB Output is correct
12 Correct 61 ms 45760 KB Output is correct
13 Correct 1 ms 6480 KB Output is correct
14 Correct 1 ms 4432 KB Output is correct
15 Correct 2 ms 4944 KB Output is correct
16 Correct 2 ms 4944 KB Output is correct
17 Correct 2 ms 4944 KB Output is correct
18 Correct 3 ms 4900 KB Output is correct
19 Correct 2 ms 4944 KB Output is correct
20 Correct 2 ms 4944 KB Output is correct
21 Correct 2 ms 4688 KB Output is correct
22 Correct 1 ms 4432 KB Output is correct
23 Correct 1 ms 4688 KB Output is correct
24 Correct 2 ms 6992 KB Output is correct
25 Correct 2 ms 6992 KB Output is correct
26 Correct 2 ms 4944 KB Output is correct
27 Correct 2 ms 4944 KB Output is correct
28 Correct 2 ms 4944 KB Output is correct
29 Correct 2 ms 5200 KB Output is correct
30 Correct 1 ms 4688 KB Output is correct
31 Correct 23 ms 8096 KB Output is correct
32 Correct 26 ms 7796 KB Output is correct
33 Correct 33 ms 8028 KB Output is correct
34 Correct 23 ms 8272 KB Output is correct
35 Correct 22 ms 8272 KB Output is correct
36 Correct 19 ms 8956 KB Output is correct
37 Correct 22 ms 7504 KB Output is correct
38 Correct 2 ms 4568 KB Output is correct
39 Correct 2 ms 4688 KB Output is correct
40 Correct 2 ms 4944 KB Output is correct
41 Correct 2 ms 6992 KB Output is correct
42 Correct 2 ms 4944 KB Output is correct
43 Correct 3 ms 4944 KB Output is correct
44 Correct 2 ms 4944 KB Output is correct
45 Correct 2 ms 4944 KB Output is correct
46 Correct 2 ms 4688 KB Output is correct
47 Correct 76 ms 43900 KB Output is correct
48 Correct 75 ms 42432 KB Output is correct
49 Correct 85 ms 43720 KB Output is correct
50 Correct 87 ms 53952 KB Output is correct
51 Correct 100 ms 71616 KB Output is correct
52 Correct 99 ms 70604 KB Output is correct
53 Correct 26 ms 20424 KB Output is correct
54 Correct 99 ms 46708 KB Output is correct
55 Correct 125 ms 42952 KB Output is correct
56 Correct 132 ms 45244 KB Output is correct
57 Correct 141 ms 73916 KB Output is correct
58 Correct 113 ms 46272 KB Output is correct
59 Correct 134 ms 73664 KB Output is correct
60 Correct 139 ms 73544 KB Output is correct
61 Correct 124 ms 71616 KB Output is correct
62 Correct 100 ms 71576 KB Output is correct
63 Correct 145 ms 73088 KB Output is correct
64 Correct 124 ms 73080 KB Output is correct
65 Correct 130 ms 72744 KB Output is correct
66 Correct 2 ms 6480 KB Output is correct
67 Correct 94 ms 45756 KB Output is correct
68 Correct 117 ms 45896 KB Output is correct
69 Correct 130 ms 45772 KB Output is correct
70 Correct 117 ms 48504 KB Output is correct
71 Correct 114 ms 48840 KB Output is correct
72 Correct 123 ms 51836 KB Output is correct
73 Correct 148 ms 73844 KB Output is correct
74 Correct 137 ms 73856 KB Output is correct
75 Correct 111 ms 46204 KB Output is correct
76 Correct 113 ms 56776 KB Output is correct
77 Correct 62 ms 45764 KB Output is correct
78 Correct 1 ms 6480 KB Output is correct
79 Correct 2 ms 6992 KB Output is correct
80 Correct 2 ms 4944 KB Output is correct
81 Correct 2 ms 4944 KB Output is correct
82 Correct 2 ms 4944 KB Output is correct
83 Correct 2 ms 6992 KB Output is correct
84 Correct 2 ms 4944 KB Output is correct
85 Correct 1 ms 4688 KB Output is correct
86 Correct 23 ms 8008 KB Output is correct
87 Correct 26 ms 7760 KB Output is correct
88 Correct 29 ms 8016 KB Output is correct
89 Correct 24 ms 8284 KB Output is correct
90 Correct 20 ms 8952 KB Output is correct
91 Correct 19 ms 8776 KB Output is correct
92 Correct 22 ms 8264 KB Output is correct
93 Correct 70 ms 43968 KB Output is correct
94 Correct 68 ms 43196 KB Output is correct
95 Correct 73 ms 43968 KB Output is correct
96 Correct 82 ms 53952 KB Output is correct
97 Correct 91 ms 71468 KB Output is correct
98 Correct 91 ms 71616 KB Output is correct
99 Correct 24 ms 18624 KB Output is correct
100 Correct 128 ms 73452 KB Output is correct
101 Correct 133 ms 73408 KB Output is correct
102 Correct 124 ms 73600 KB Output is correct
103 Correct 131 ms 73160 KB Output is correct
104 Correct 117 ms 72924 KB Output is correct
105 Correct 130 ms 73152 KB Output is correct
106 Correct 102 ms 39104 KB Output is correct
107 Correct 121 ms 45256 KB Output is correct
108 Correct 104 ms 46072 KB Output is correct
109 Correct 110 ms 46072 KB Output is correct
110 Correct 136 ms 73416 KB Output is correct
111 Correct 119 ms 73444 KB Output is correct