Submission #12,434

2024-12-17 19:29:54

cpp17

Accepted 50/50

92ms

4320 KiB

#include <iostream>

using namespace std;
int aru[1000001]{ 0 };
int main()
{
    long long n, m, db=0;
    cin >> n >> m;
    int x, y;
    aru[n] = 1;

    for (int i = 1; i <= m; i++) {
        cin >> x >> y;
        aru[x]++;
        aru[y]--;
    }
    for (int i = 1; i <= n; i++) {
        aru[i] = aru[i] + aru[i - 1];
    }
    for (int i = 1; i <= n; i++) {
        if (aru[i] == 0 and aru[i + 1] != 0) {
            db++;
        }
    }
    cout << db;
    return 0;
}

	Sum	Test	Verdict		Time	Memory
base	50/50
		1	Accepted	0/0	1ms	320 KiB
		2	Accepted	0/0	92ms	4320 KiB
		3	Accepted	2/2	1ms	320 KiB
		4	Accepted	2/2	1ms	320 KiB
		5	Accepted	2/2	1ms	320 KiB
		6	Accepted	2/2	1ms	320 KiB
		7	Accepted	2/2	1ms	320 KiB
		8	Accepted	2/2	1ms	320 KiB
		9	Accepted	2/2	1ms	320 KiB
		10	Accepted	2/2	1ms	320 KiB
		11	Accepted	2/2	1ms	568 KiB
		12	Accepted	2/2	1ms	568 KiB
		13	Accepted	3/3	4ms	568 KiB
		14	Accepted	3/3	7ms	1080 KiB
		15	Accepted	3/3	4ms	1076 KiB
		16	Accepted	3/3	64ms	4144 KiB
		17	Accepted	3/3	67ms	4148 KiB
		18	Accepted	3/3	75ms	4092 KiB
		19	Accepted	3/3	8ms	1980 KiB
		20	Accepted	3/3	9ms	2372 KiB
		21	Accepted	3/3	79ms	4316 KiB
		22	Accepted	3/3	76ms	4312 KiB