//B #include //#include using namespace std; using ll = long long; #define ALL(a) (a).begin(),(a).end() using v_vll = vector>; int main(){ ll n,m;cin>>n>>m; vector data(n+10); ll l,r; for(ll i=0;i>l>>r; data[n-l]++; data[n-r+1]--; } for(ll i=1;i