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26 lines
440 B
C++
26 lines
440 B
C++
#include <iostream>
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#include <algorithm>
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using std::cin;
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using std::cout;
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using std::endl;
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const int N = 1000005;
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int n, k, a, b, s[N], f[N];
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int main() {
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cin >> n >> k;
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for (int i = 1; i <= k; i++) {
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cin >> a >> b;
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s[a] += 1;
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s[b + 1] -= 1;
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}
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for (int i = 1; i <= n; i++) {
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f[i] = f[i - 1] + s[i];
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}
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std::sort(f + 1, f + 1 + n);
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cout << f[n / 2 + 1] << endl;
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return 0;
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}
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