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Submission #1084254

# Submission time Handle Problem Language Result Execution time Memory
1084254 2024-09-05T17:27:13 Z De3b0o Fire (BOI24_fire) C++17
40 / 100
 50 ms 8484 KB 
#include<bits/stdc++.h>
#include<random>
#define ll long long
#define F first
#define S second
#define in insert
#define pb push_back
#define ppb pop_back()
#define d3 ios::sync_with_stdio(0);cin.tie(0);cout.tie(0);
#define cans cout << ans << "\n";
#define yes cout << "Yes" << "\n";
#define no cout << "No" << "\n";
#define pll pair<ll,ll>
#define lin cout << "\n";
#define sqr 340
#define mod 1000000007
#define mid ((l+r)/2)
#define lc (2*x)
#define rc (2*x+1)
#define sq 547

using namespace std;

ll n , m;
vector<pll> v;
ll ans;
ll l[200009] , r[200009];
ll idx;

void pro(ll s , ll e , ll t)
{
    bool g = 1;
    ll ans1 = t;
    ll id = s;
    while(id<=e)
    {
        while(idx<v.size())
        {
            if(v[idx].F<=id)
                idx++;
            else
                break;
        }
        if(idx==0)
        {
            g=0;
            break;
        }
        ll ne = v[idx-1].S;
        if(ne<id)
        {
            g=0;
            break;
        }
        ans1++;
        id=ne+1;
    }
    if(g)
        ans=min(ans,ans1);
}

int main()
{
    cin >> n >> m;
    ans=n+1;
    for(int i = 0 ; n>i ; i++)
        cin >> l[i] >> r[i];
    for(int i = 0 ; n>i ; i++)
    {
        ll x = l[i] , y = r[i];
        if(x>y)
            y=m;
        v.pb({x,y});
    }
    sort(v.begin(),v.end());
    for(int i = 1 ; v.size()>i ; i++)
        v[i].S=max(v[i].S,v[i-1].S);
    ll mn = 1e10 , id1 = -1;
    ll mx = -1 , id2 = -1;
    for(int i = 0 ; n>i ; i++)
    {
        if(l[i]>r[i])
        {
            if(l[i]<mn)
            {
                mn=l[i];
                id1=i;
            }
            else if(l[i]==mn&&r[i]>r[id1])
            {
                mn=l[i];
                id1=i;
            }
            if(r[i]>mx)
            {
                mx=r[i];
                id2=i;
            }
            else if(r[i]==mx&&l[i]<l[id2])
            {
                mx=r[i];
                id2=i;
            }
        }
    }
    idx=0;
    pro(0,m,0);
    if(id1!=-1)
    {
        idx=0;
        pro(r[id1]+1,l[id1]-1,1);
    }
    if(id2!=-1)
    {
        idx=0;
        pro(r[id2]+1,l[id2]-1,1);
    }
    if(ans==n+1)
        ans=-1;
    cans
}

Compilation message

Main.cpp: In function 'void pro(long long int, long long int, long long int)':
Main.cpp:37:18: warning: comparison of integer expressions of different signedness: 'long long int' and 'std::vector<std::pair<long long int, long long int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   37 |         while(idx<v.size())
      |               ~~~^~~~~~~~~
Main.cpp: In function 'int main()':
Main.cpp:76:29: warning: comparison of integer expressions of different signedness: 'std::vector<std::pair<long long int, long long int> >::size_type' {aka 'long unsigned int'} and 'int' [-Wsign-compare]
   76 |     for(int i = 1 ; v.size()>i ; i++)
      |                     ~~~~~~~~^~

Subtask #1
14.0 / 14.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 348 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 0 ms 448 KB Output is correct
5 Correct 0 ms 348 KB Output is correct
6 Correct 0 ms 348 KB Output is correct
7 Correct 0 ms 348 KB Output is correct
8 Correct 0 ms 348 KB Output is correct
9 Correct 1 ms 344 KB Output is correct
10 Correct 0 ms 348 KB Output is correct
11 Correct 0 ms 348 KB Output is correct
12 Correct 1 ms 344 KB Output is correct
13 Correct 1 ms 348 KB Output is correct
14 Correct 0 ms 348 KB Output is correct
15 Correct 0 ms 348 KB Output is correct
16 Correct 0 ms 348 KB Output is correct
17 Correct 0 ms 348 KB Output is correct
18 Correct 0 ms 348 KB Output is correct
19 Correct 1 ms 600 KB Output is correct
20 Correct 0 ms 348 KB Output is correct
21 Correct 0 ms 348 KB Output is correct
22 Correct 0 ms 344 KB Output is correct
23 Correct 0 ms 344 KB Output is correct

Subtask #2
17.0 / 17.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 348 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 0 ms 448 KB Output is correct
5 Correct 0 ms 348 KB Output is correct
6 Correct 0 ms 348 KB Output is correct
7 Correct 0 ms 348 KB Output is correct
8 Correct 0 ms 348 KB Output is correct
9 Correct 1 ms 344 KB Output is correct
10 Correct 0 ms 348 KB Output is correct
11 Correct 0 ms 348 KB Output is correct
12 Correct 1 ms 344 KB Output is correct
13 Correct 1 ms 348 KB Output is correct
14 Correct 0 ms 348 KB Output is correct
15 Correct 0 ms 348 KB Output is correct
16 Correct 0 ms 348 KB Output is correct
17 Correct 0 ms 348 KB Output is correct
18 Correct 0 ms 348 KB Output is correct
19 Correct 1 ms 600 KB Output is correct
20 Correct 0 ms 348 KB Output is correct
21 Correct 0 ms 348 KB Output is correct
22 Correct 0 ms 344 KB Output is correct
23 Correct 0 ms 344 KB Output is correct
24 Correct 0 ms 344 KB Output is correct
25 Correct 1 ms 348 KB Output is correct
26 Correct 1 ms 348 KB Output is correct
27 Correct 0 ms 348 KB Output is correct
28 Correct 1 ms 448 KB Output is correct
29 Correct 1 ms 348 KB Output is correct
30 Correct 1 ms 348 KB Output is correct
31 Correct 1 ms 348 KB Output is correct
32 Correct 0 ms 348 KB Output is correct
33 Correct 1 ms 344 KB Output is correct
34 Correct 0 ms 348 KB Output is correct
35 Correct 0 ms 348 KB Output is correct
36 Correct 1 ms 348 KB Output is correct
37 Correct 1 ms 348 KB Output is correct
38 Correct 0 ms 348 KB Output is correct

Subtask #3
9.0 / 9.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 348 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 0 ms 448 KB Output is correct
5 Correct 0 ms 348 KB Output is correct
6 Correct 0 ms 348 KB Output is correct
7 Correct 0 ms 348 KB Output is correct
8 Correct 0 ms 348 KB Output is correct
9 Correct 1 ms 344 KB Output is correct
10 Correct 0 ms 348 KB Output is correct
11 Correct 0 ms 348 KB Output is correct
12 Correct 1 ms 344 KB Output is correct
13 Correct 1 ms 348 KB Output is correct
14 Correct 0 ms 348 KB Output is correct
15 Correct 0 ms 348 KB Output is correct
16 Correct 0 ms 348 KB Output is correct
17 Correct 0 ms 348 KB Output is correct
18 Correct 0 ms 348 KB Output is correct
19 Correct 1 ms 600 KB Output is correct
20 Correct 0 ms 348 KB Output is correct
21 Correct 0 ms 348 KB Output is correct
22 Correct 0 ms 344 KB Output is correct
23 Correct 0 ms 344 KB Output is correct
24 Correct 0 ms 344 KB Output is correct
25 Correct 1 ms 348 KB Output is correct
26 Correct 1 ms 348 KB Output is correct
27 Correct 0 ms 348 KB Output is correct
28 Correct 1 ms 448 KB Output is correct
29 Correct 1 ms 348 KB Output is correct
30 Correct 1 ms 348 KB Output is correct
31 Correct 1 ms 348 KB Output is correct
32 Correct 0 ms 348 KB Output is correct
33 Correct 1 ms 344 KB Output is correct
34 Correct 0 ms 348 KB Output is correct
35 Correct 0 ms 348 KB Output is correct
36 Correct 1 ms 348 KB Output is correct
37 Correct 1 ms 348 KB Output is correct
38 Correct 0 ms 348 KB Output is correct
39 Correct 3 ms 600 KB Output is correct
40 Correct 3 ms 604 KB Output is correct
41 Correct 4 ms 604 KB Output is correct
42 Correct 2 ms 604 KB Output is correct
43 Correct 3 ms 716 KB Output is correct
44 Correct 3 ms 764 KB Output is correct
45 Correct 3 ms 604 KB Output is correct
46 Correct 3 ms 604 KB Output is correct
47 Correct 3 ms 604 KB Output is correct
48 Correct 5 ms 604 KB Output is correct
49 Correct 2 ms 604 KB Output is correct
50 Correct 2 ms 604 KB Output is correct

Subtask #4
0 / 13.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 348 KB Output is correct
2 Correct 0 ms 448 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 0 ms 348 KB Output is correct
5 Correct 0 ms 348 KB Output is correct
6 Correct 0 ms 348 KB Output is correct
7 Correct 1 ms 344 KB Output is correct
8 Correct 0 ms 344 KB Output is correct
9 Correct 1 ms 344 KB Output is correct
10 Correct 1 ms 344 KB Output is correct
11 Correct 1 ms 348 KB Output is correct
12 Correct 0 ms 348 KB Output is correct
13 Correct 1 ms 348 KB Output is correct
14 Correct 0 ms 360 KB Output is correct
15 Correct 3 ms 604 KB Output is correct
16 Correct 2 ms 788 KB Output is correct
17 Correct 3 ms 596 KB Output is correct
18 Correct 3 ms 604 KB Output is correct
19 Correct 3 ms 604 KB Output is correct
20 Incorrect 43 ms 8484 KB Output isn't correct
21 Halted 0 ms 0 KB -

Subtask #5
0 / 21.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 344 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 0 ms 444 KB Output is correct
4 Correct 0 ms 348 KB Output is correct
5 Correct 0 ms 348 KB Output is correct
6 Correct 0 ms 348 KB Output is correct
7 Correct 0 ms 348 KB Output is correct
8 Correct 0 ms 348 KB Output is correct
9 Correct 1 ms 348 KB Output is correct
10 Correct 1 ms 348 KB Output is correct
11 Correct 1 ms 348 KB Output is correct
12 Correct 3 ms 724 KB Output is correct
13 Correct 3 ms 604 KB Output is correct
14 Correct 3 ms 716 KB Output is correct
15 Incorrect 50 ms 8340 KB Output isn't correct
16 Halted 0 ms 0 KB -

Subtask #6
0 / 26.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 348 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 0 ms 448 KB Output is correct
5 Correct 0 ms 348 KB Output is correct
6 Correct 0 ms 348 KB Output is correct
7 Correct 0 ms 348 KB Output is correct
8 Correct 0 ms 348 KB Output is correct
9 Correct 1 ms 344 KB Output is correct
10 Correct 0 ms 348 KB Output is correct
11 Correct 0 ms 348 KB Output is correct
12 Correct 1 ms 344 KB Output is correct
13 Correct 1 ms 348 KB Output is correct
14 Correct 0 ms 348 KB Output is correct
15 Correct 0 ms 348 KB Output is correct
16 Correct 0 ms 348 KB Output is correct
17 Correct 0 ms 348 KB Output is correct
18 Correct 0 ms 348 KB Output is correct
19 Correct 1 ms 600 KB Output is correct
20 Correct 0 ms 348 KB Output is correct
21 Correct 0 ms 348 KB Output is correct
22 Correct 0 ms 344 KB Output is correct
23 Correct 0 ms 344 KB Output is correct
24 Correct 0 ms 344 KB Output is correct
25 Correct 1 ms 348 KB Output is correct
26 Correct 1 ms 348 KB Output is correct
27 Correct 0 ms 348 KB Output is correct
28 Correct 1 ms 448 KB Output is correct
29 Correct 1 ms 348 KB Output is correct
30 Correct 1 ms 348 KB Output is correct
31 Correct 1 ms 348 KB Output is correct
32 Correct 0 ms 348 KB Output is correct
33 Correct 1 ms 344 KB Output is correct
34 Correct 0 ms 348 KB Output is correct
35 Correct 0 ms 348 KB Output is correct
36 Correct 1 ms 348 KB Output is correct
37 Correct 1 ms 348 KB Output is correct
38 Correct 0 ms 348 KB Output is correct
39 Correct 3 ms 600 KB Output is correct
40 Correct 3 ms 604 KB Output is correct
41 Correct 4 ms 604 KB Output is correct
42 Correct 2 ms 604 KB Output is correct
43 Correct 3 ms 716 KB Output is correct
44 Correct 3 ms 764 KB Output is correct
45 Correct 3 ms 604 KB Output is correct
46 Correct 3 ms 604 KB Output is correct
47 Correct 3 ms 604 KB Output is correct
48 Correct 5 ms 604 KB Output is correct
49 Correct 2 ms 604 KB Output is correct
50 Correct 2 ms 604 KB Output is correct
51 Correct 0 ms 348 KB Output is correct
52 Correct 0 ms 448 KB Output is correct
53 Correct 0 ms 348 KB Output is correct
54 Correct 0 ms 348 KB Output is correct
55 Correct 0 ms 348 KB Output is correct
56 Correct 0 ms 348 KB Output is correct
57 Correct 1 ms 344 KB Output is correct
58 Correct 0 ms 344 KB Output is correct
59 Correct 1 ms 344 KB Output is correct
60 Correct 1 ms 344 KB Output is correct
61 Correct 1 ms 348 KB Output is correct
62 Correct 0 ms 348 KB Output is correct
63 Correct 1 ms 348 KB Output is correct
64 Correct 0 ms 360 KB Output is correct
65 Correct 3 ms 604 KB Output is correct
66 Correct 2 ms 788 KB Output is correct
67 Correct 3 ms 596 KB Output is correct
68 Correct 3 ms 604 KB Output is correct
69 Correct 3 ms 604 KB Output is correct
70 Incorrect 43 ms 8484 KB Output isn't correct
71 Halted 0 ms 0 KB -