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Submission #1084284

# Submission time Handle Problem Language Result Execution time Memory
1084284 2024-09-05T18:22:34 Z De3b0o Fire (BOI24_fire) C++17
40 / 100
 121 ms 11460 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&&ans1!=1)
        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-1;
        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;
    ll mnn = 1e10;
    bool ws = 0;
    ll d = 0;
    for(int i = 0 ; n>i ; i++)
    {
        if(min(l[i],r[i])==0&&max(l[i],r[i])==m-1)
            ws=1;
        if(l[i]==0||r[i]==m-1||l[i]>r[i])
            d++;
        if(l[i]>r[i])
        {
            if(r[i]==0)
            {
                mnn=min(mnn,l[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;
            }
        }
    }
    pro(0,m-1,0);
    idx=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);
    }
    idx=0;
    if(mnn!=1e10)
        pro(1,mnn-1,1);
    if(ws&&d>1)
        ans=2;
    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 0 ms 348 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 0 ms 452 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 0 ms 348 KB Output is correct
10 Correct 0 ms 448 KB Output is correct
11 Correct 0 ms 348 KB Output is correct
12 Correct 1 ms 348 KB Output is correct
13 Correct 0 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 1 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 0 ms 348 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 348 KB Output is correct
23 Correct 0 ms 348 KB Output is correct

Subtask #2
17.0 / 17.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 348 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 0 ms 452 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 0 ms 348 KB Output is correct
10 Correct 0 ms 448 KB Output is correct
11 Correct 0 ms 348 KB Output is correct
12 Correct 1 ms 348 KB Output is correct
13 Correct 0 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 1 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 0 ms 348 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 348 KB Output is correct
23 Correct 0 ms 348 KB Output is correct
24 Correct 0 ms 348 KB Output is correct
25 Correct 0 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 344 KB Output is correct
29 Correct 1 ms 344 KB Output is correct
30 Correct 0 ms 348 KB Output is correct
31 Correct 0 ms 348 KB Output is correct
32 Correct 1 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 1 ms 348 KB Output is correct
36 Correct 1 ms 348 KB Output is correct
37 Correct 1 ms 344 KB Output is correct
38 Correct 1 ms 348 KB Output is correct

Subtask #3
9.0 / 9.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 348 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 0 ms 452 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 0 ms 348 KB Output is correct
10 Correct 0 ms 448 KB Output is correct
11 Correct 0 ms 348 KB Output is correct
12 Correct 1 ms 348 KB Output is correct
13 Correct 0 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 1 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 0 ms 348 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 348 KB Output is correct
23 Correct 0 ms 348 KB Output is correct
24 Correct 0 ms 348 KB Output is correct
25 Correct 0 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 344 KB Output is correct
29 Correct 1 ms 344 KB Output is correct
30 Correct 0 ms 348 KB Output is correct
31 Correct 0 ms 348 KB Output is correct
32 Correct 1 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 1 ms 348 KB Output is correct
36 Correct 1 ms 348 KB Output is correct
37 Correct 1 ms 344 KB Output is correct
38 Correct 1 ms 348 KB Output is correct
39 Correct 3 ms 604 KB Output is correct
40 Correct 4 ms 608 KB Output is correct
41 Correct 3 ms 604 KB Output is correct
42 Correct 2 ms 788 KB Output is correct
43 Correct 3 ms 600 KB Output is correct
44 Correct 3 ms 764 KB Output is correct
45 Correct 3 ms 856 KB Output is correct
46 Correct 4 ms 604 KB Output is correct
47 Correct 4 ms 604 KB Output is correct
48 Correct 3 ms 620 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 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 344 KB Output is correct
6 Correct 1 ms 600 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 0 ms 444 KB Output is correct
11 Correct 0 ms 456 KB Output is correct
12 Correct 1 ms 348 KB Output is correct
13 Correct 0 ms 348 KB Output is correct
14 Correct 0 ms 348 KB Output is correct
15 Correct 3 ms 604 KB Output is correct
16 Correct 3 ms 604 KB Output is correct
17 Correct 3 ms 604 KB Output is correct
18 Correct 3 ms 604 KB Output is correct
19 Correct 3 ms 608 KB Output is correct
20 Correct 45 ms 8564 KB Output is correct
21 Correct 110 ms 11460 KB Output is correct
22 Correct 117 ms 11460 KB Output is correct
23 Correct 99 ms 10692 KB Output is correct
24 Incorrect 113 ms 11456 KB Output isn't correct
25 Halted 0 ms 0 KB -

Subtask #5
0 / 21.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 600 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 348 KB Output is correct
5 Correct 0 ms 348 KB Output is correct
6 Correct 0 ms 344 KB Output is correct
7 Correct 0 ms 348 KB Output is correct
8 Correct 1 ms 348 KB Output is correct
9 Correct 1 ms 348 KB Output is correct
10 Correct 1 ms 344 KB Output is correct
11 Correct 0 ms 348 KB Output is correct
12 Correct 3 ms 604 KB Output is correct
13 Correct 3 ms 604 KB Output is correct
14 Correct 2 ms 604 KB Output is correct
15 Correct 50 ms 8388 KB Output is correct
16 Correct 95 ms 10548 KB Output is correct
17 Incorrect 121 ms 11460 KB Output isn't correct
18 Halted 0 ms 0 KB -

Subtask #6
0 / 26.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 348 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 0 ms 452 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 0 ms 348 KB Output is correct
10 Correct 0 ms 448 KB Output is correct
11 Correct 0 ms 348 KB Output is correct
12 Correct 1 ms 348 KB Output is correct
13 Correct 0 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 1 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 0 ms 348 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 348 KB Output is correct
23 Correct 0 ms 348 KB Output is correct
24 Correct 0 ms 348 KB Output is correct
25 Correct 0 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 344 KB Output is correct
29 Correct 1 ms 344 KB Output is correct
30 Correct 0 ms 348 KB Output is correct
31 Correct 0 ms 348 KB Output is correct
32 Correct 1 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 1 ms 348 KB Output is correct
36 Correct 1 ms 348 KB Output is correct
37 Correct 1 ms 344 KB Output is correct
38 Correct 1 ms 348 KB Output is correct
39 Correct 3 ms 604 KB Output is correct
40 Correct 4 ms 608 KB Output is correct
41 Correct 3 ms 604 KB Output is correct
42 Correct 2 ms 788 KB Output is correct
43 Correct 3 ms 600 KB Output is correct
44 Correct 3 ms 764 KB Output is correct
45 Correct 3 ms 856 KB Output is correct
46 Correct 4 ms 604 KB Output is correct
47 Correct 4 ms 604 KB Output is correct
48 Correct 3 ms 620 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 348 KB Output is correct
53 Correct 0 ms 348 KB Output is correct
54 Correct 0 ms 448 KB Output is correct
55 Correct 0 ms 344 KB Output is correct
56 Correct 1 ms 600 KB Output is correct
57 Correct 0 ms 348 KB Output is correct
58 Correct 0 ms 348 KB Output is correct
59 Correct 1 ms 348 KB Output is correct
60 Correct 0 ms 444 KB Output is correct
61 Correct 0 ms 456 KB Output is correct
62 Correct 1 ms 348 KB Output is correct
63 Correct 0 ms 348 KB Output is correct
64 Correct 0 ms 348 KB Output is correct
65 Correct 3 ms 604 KB Output is correct
66 Correct 3 ms 604 KB Output is correct
67 Correct 3 ms 604 KB Output is correct
68 Correct 3 ms 604 KB Output is correct
69 Correct 3 ms 608 KB Output is correct
70 Correct 45 ms 8564 KB Output is correct
71 Correct 110 ms 11460 KB Output is correct
72 Correct 117 ms 11460 KB Output is correct
73 Correct 99 ms 10692 KB Output is correct
74 Incorrect 113 ms 11456 KB Output isn't correct
75 Halted 0 ms 0 KB -