Submission #20,132

20132

2026-01-02 14:44:24

cpp17

Accepted 50/50

82ms

4328 KiB

#include <iostream>
#include <vector>
using namespace std;

int main()
{
    int n, m, x, y;
    cin >> n >> m;
    vector <int> v(n+2,0);

    for (int i=1; i<=m; i++)
    {
        cin >> x >> y;
        v[x]++;
        v[y]--;
    }
    int sum=0, db=0;
    if (v[1]==0)
    {
        db++;
    }
    else
    {
        sum=v[1];
    }
    for (int i=2; i<n; i++)
    {
        sum+=v[i];
        if (sum==0 && v[i]!=0)
        {
         db++;
        }
    }
    cout << db;
    return 0;
}

	Sum	Test	Verdict		Time	Memory
base	50/50
		1	Accepted	0/0	1ms	316 KiB
		2	Accepted	0/0	82ms	4152 KiB
		3	Accepted	2/2	1ms	316 KiB
		4	Accepted	2/2	1ms	508 KiB
		5	Accepted	2/2	1ms	316 KiB
		6	Accepted	2/2	1ms	316 KiB
		7	Accepted	2/2	1ms	316 KiB
		8	Accepted	2/2	1ms	316 KiB
		9	Accepted	2/2	1ms	316 KiB
		10	Accepted	2/2	1ms	316 KiB
		11	Accepted	2/2	2ms	568 KiB
		12	Accepted	2/2	2ms	748 KiB
		13	Accepted	3/3	4ms	564 KiB
		14	Accepted	3/3	8ms	1080 KiB
		15	Accepted	3/3	6ms	1144 KiB
		16	Accepted	3/3	61ms	4324 KiB
		17	Accepted	3/3	63ms	4148 KiB
		18	Accepted	3/3	71ms	4148 KiB
		19	Accepted	3/3	8ms	1844 KiB
		20	Accepted	3/3	9ms	2356 KiB
		21	Accepted	3/3	75ms	4148 KiB
		22	Accepted	3/3	72ms	4328 KiB