Traffic jam

input/code.cpp: In function 'void solve()':
input/code.cpp:71:22: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<int, int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   71 |     for(int i = 0; i < cars.size(); i++){
      |                    ~~^~~~~~~~~~~~~
input/code.cpp:66:9: warning: variable 's' set but not used [-Wunused-but-set-variable]
   66 |     int s = cars[0].first;
      |         ^

/*
    Road to Freedom
*/

#include <bits/stdc++.h>

using namespace std;

#define ll             long long int
#define F              first
#define S              second
#define pb             push_back
#define si             set <int>
#define vi             vector <int>
#define pii            pair <int, int>
#define vpi            vector <pii>
#define vpp            vector <pair<int, pii>>
#define mii            map <int, int>
#define mpi            map <pii, int>
#define spi            set <pii>
#define endl           "\n"
#define sz(x)          ((int) x.size())
#define all(p)         p.begin(), p.end()
#define double         long double
#define que_max        priority_queue <int>
#define que_min        priority_queue <int, vi, greater<int>>
#define bug(...)       __f (#__VA_ARGS__, __VA_ARGS__)
#define print(a)       for(auto x : a) cout << x << " "; cout << endl
#define print1(a)      for(auto x : a) cout << x.F << " " << x.S << endl
#define print2(a,x,y)  for(int i = x; i < y; i++) cout<< a[i]<< " "; cout << endl
#define REP(i,a,b)     for (int i = a; i <= b; i++)

inline int power(int a, int b)
{
    int x = 1;
    while (b)
    {
        if (b & 1) x *= a;
        a *= a;
        b >>= 1;
    }
    return x;
}

template <typename Arg1>
void __f (const char* name, Arg1&& arg1) { cout << name << " : " << arg1 << endl; }
template <typename Arg1, typename... Args>
void __f (const char* names, Arg1&& arg1, Args&&... args)
{
    const char* comma = strchr (names + 1, ',');
    cout.write (names, comma - names) << " : " << arg1 << " | "; __f (comma + 1, args...);
}

const int N = 200005;

void solve() {
    int n; cin >> n;
    vector<pair<int,int>> cars;
    for(int i = 0; i < n; i++){
        int a,b; cin >> a >> b;
        cars.push_back({a,b});
    }

    sort(cars.begin(), cars.end());

    int s = cars[0].first;
    int e = cars[0].second;
    int ans = -1;
    int tmp = 0;

    for(int i = 0; i < cars.size(); i++){
        if(e >= cars[i].first) {
            tmp++;
            ans = max(ans,tmp);
            e = cars[i].second;
        }
        else{
            tmp = 1;
            ans = max(ans,tmp);
            s = cars[i].first;
            e = cars[i].second;
        }
    }

    cout << ans << endl;
}

int32_t main()
{
    ios_base::sync_with_stdio(0); cin.tie(0); cout.tie(0);

    #ifndef ONLINE_JUDGE
        freopen("input.txt",  "r",  stdin);
        freopen("output.txt", "w", stdout);
    #endif

    clock_t z = clock();

    int t = 1;
    // cin >> t;
    while (t--) solve();

    cerr << "Run Time : " << ((double)(clock() - z) / CLOCKS_PER_SEC);

    return 0;
}

Test 1

Verdict: WRONG ANSWER

Run Time : 3.8e-05

Test 2

Verdict: WRONG ANSWER

Run Time : 5.2e-05

Test 3

Verdict: ACCEPTED

Run Time : 3.8e-05

Test 4

Verdict: ACCEPTED

Run Time : 4e-05

Test 5

Verdict: WRONG ANSWER

Run Time : 3.8e-05

Test 6

Verdict: ACCEPTED

Run Time : 4e-05

Test 7

Verdict: ACCEPTED

Run Time : 3.9e-05

Test 8

Verdict: WRONG ANSWER

Run Time : 3.7e-05

Test 9

Verdict: ACCEPTED

Run Time : 4e-05

Test 10

Verdict: WRONG ANSWER

Run Time : 4e-05

Test 11

Verdict: WRONG ANSWER

Run Time : 4.1e-05

Test 12

Verdict: WRONG ANSWER

Run Time : 4.2e-05

Test 13

Verdict: ACCEPTED

Run Time : 4.3e-05

Test 14

Verdict: WRONG ANSWER

Run Time : 4.1e-05

Test 15

Verdict: WRONG ANSWER

Run Time : 4.2e-05

Test 16

Verdict: WRONG ANSWER

Run Time : 4.2e-05

Test 17

Verdict: WRONG ANSWER

Run Time : 4.2e-05

Test 18

Verdict: WRONG ANSWER

Run Time : 6e-05

Test 19

Verdict: WRONG ANSWER

Run Time : 4.3e-05

Test 20

Verdict: WRONG ANSWER

Run Time : 4.2e-05

Test 21

Verdict: WRONG ANSWER

Run Time : 6.8e-05

Test 22

Verdict: WRONG ANSWER

Run Time : 6.8e-05

Test 23

Verdict: WRONG ANSWER

Run Time : 7.6e-05

Test 24

Verdict: WRONG ANSWER

Run Time : 7e-05

Test 25

Verdict: WRONG ANSWER

Run Time : 6.9e-05

Test 26

Verdict: WRONG ANSWER

Run Time : 6.9e-05

Test 27

Verdict: WRONG ANSWER

Run Time : 7.1e-05

Test 28

Verdict: WRONG ANSWER

Run Time : 6.7e-05

Test 29

Verdict: WRONG ANSWER

Run Time : 6.8e-05

Test 30

Verdict: WRONG ANSWER

Run Time : 0.00011

Test 31

Verdict: WRONG ANSWER

Run Time : 9.7e-05

Test 32

Verdict: WRONG ANSWER

Run Time : 9.6e-05

Test 33

Verdict: WRONG ANSWER

Run Time : 9.4e-05

Test 34

Verdict: WRONG ANSWER

Run Time : 9.5e-05

Test 35

Verdict: WRONG ANSWER

Run Time : 9.6e-05

Test 36

Verdict: WRONG ANSWER

Run Time : 9.5e-05

Test 37

Verdict: WRONG ANSWER

Run Time : 9.8e-05

Test 38

Verdict: WRONG ANSWER

Run Time : 9.6e-05

Test 39

Verdict: WRONG ANSWER

Run Time : 9.6e-05

Test 40

Verdict: WRONG ANSWER

Run Time : 9.6e-05

Test 41

Verdict: WRONG ANSWER

Run Time : 0.00036

Test 42

Verdict: WRONG ANSWER

Run Time : 0.00034

Test 43

Verdict: WRONG ANSWER

Run Time : 0.000343

Test 44

Verdict: WRONG ANSWER

Run Time : 0.000334

Test 45

Verdict: WRONG ANSWER

Run Time : 0.00033

Test 46

Verdict: WRONG ANSWER

Run Time : 0.000331

Test 47

Verdict: WRONG ANSWER

Run Time : 0.000333

Test 48

Verdict: WRONG ANSWER

Run Time : 0.00034

Test 49

Verdict: WRONG ANSWER

Run Time : 0.000523

Test 50

Verdict: WRONG ANSWER

Run Time : 0.000333

Test 51

Verdict: WRONG ANSWER

Run Time : 0.003263

Test 52

Verdict: WRONG ANSWER

Run Time : 0.003223

Test 53

Verdict: WRONG ANSWER

Run Time : 0.003302

Test 54

Verdict: WRONG ANSWER

Run Time : 0.003225

Test 55

Verdict: WRONG ANSWER

Run Time : 0.003449

Test 56

Verdict: WRONG ANSWER

Run Time : 0.003251

Test 57

Verdict: WRONG ANSWER

Run Time : 0.003259

Test 58

Verdict: WRONG ANSWER

Run Time : 0.003314

Test 59

Verdict: WRONG ANSWER

Run Time : 0.003247

Test 60

Verdict: WRONG ANSWER

Run Time : 0.003267

Test 61

Verdict: WRONG ANSWER

Run Time : 0.033708

Test 62

Verdict: WRONG ANSWER

Run Time : 0.033756

Test 63

Verdict: WRONG ANSWER

Run Time : 0.033757

Test 64

Verdict: WRONG ANSWER

Run Time : 0.033705

Test 65

Verdict: WRONG ANSWER

Run Time : 0.033815

Test 66

Verdict: WRONG ANSWER

Run Time : 0.033829

Test 67

Verdict: WRONG ANSWER

Run Time : 0.033683

Test 68

Verdict: WRONG ANSWER

Run Time : 0.03373

Test 69

Verdict: WRONG ANSWER

Run Time : 0.038381

Test 70

Verdict: WRONG ANSWER

Run Time : 0.033659