Submission #1,514

2022-11-21 21:08:32

cpp14

Accepted 50/50

30ms

12600 KiB

#include <bits/stdc++.h>
#define speed ios::sync_with_stdio(0);cin.tie(0)
using namespace std;

int main() {
    speed;
    int n, m;
    cin >> n >> m;
    vector<int> v(n);
    while (m--) {
        int l, r;
        cin >> l >> r;
        v[l - 1]++;
        v[r - 1]--;
    }
    partial_sum(v.begin(), v.end(), v.begin());
    int c = 0;
    if (v[0] == 0) c++;
    for (int i = 1; i < n - 1; i++) {
        if (v[i - 1] != 0 && v[i] == 0) c++;
    }
    cout << c;
}

	Sum	Test	Verdict		Time	Memory
base	50/50
		1	Accepted	0/0	3ms	1828 KiB
		2	Accepted	0/0	30ms	9724 KiB
		3	Accepted	2/2	2ms	2224 KiB
		4	Accepted	2/2	2ms	2424 KiB
		5	Accepted	2/2	2ms	2636 KiB
		6	Accepted	2/2	2ms	2856 KiB
		7	Accepted	2/2	2ms	3036 KiB
		8	Accepted	2/2	2ms	3392 KiB
		9	Accepted	2/2	2ms	3384 KiB
		10	Accepted	2/2	2ms	3568 KiB
		11	Accepted	2/2	2ms	3824 KiB
		12	Accepted	2/2	3ms	4344 KiB
		13	Accepted	3/3	4ms	4548 KiB
		14	Accepted	3/3	4ms	5396 KiB
		15	Accepted	3/3	4ms	5748 KiB
		16	Accepted	3/3	24ms	12152 KiB
		17	Accepted	3/3	24ms	12412 KiB
		18	Accepted	3/3	27ms	12600 KiB
		19	Accepted	3/3	6ms	8064 KiB
		20	Accepted	3/3	7ms	8792 KiB
		21	Accepted	3/3	28ms	12444 KiB
		22	Accepted	3/3	28ms	12448 KiB