#include using namespace std; #define ALL(x) x.begin(),x.end() #define rep(i,n) for(int i=0;i<(n);i++) #define debug(v) cout<<#v<<":";for(auto x:v){cout<bool chmax(T &a,const T &b){if(abool chmin(T &a,const T &b){if(b ostream &operator<<(ostream &os,const pair&p){ os< ostream &operator<<(ostream &os,const vector&v){ for(int i=0;i<(int)v.size();i++) os< struct ModInt{ long long x; ModInt():x(0){} ModInt(long long y):x(y>=0?y%Mod:(Mod-(-y)%Mod)%Mod){} ModInt &operator+=(const ModInt &p){ if((x+=p.x)>=Mod) x-=Mod; return *this; } ModInt &operator-=(const ModInt &p){ if((x+=Mod-p.x)>=Mod)x-=Mod; return *this; } ModInt &operator*=(const ModInt &p){ x=(int)(1ll*x*p.x%Mod); return *this; } ModInt &operator/=(const ModInt &p){ (*this)*=p.inverse(); return *this; } ModInt operator-()const{return ModInt(x);} ModInt operator+(const ModInt &p)const{return ModInt(*this)+=p;} ModInt operator-(const ModInt &p)const{return ModInt(*this)-=p;} ModInt operator*(const ModInt &p)const{return ModInt(*this)*=p;} ModInt operator/(const ModInt &p)const{return ModInt(*this)/=p;} ModInt operator==(const ModInt &p)const{return x==p.x;} ModInt operator!=(const ModInt &p)const{return x!=p.x;} ModInt inverse()const{ int a=x,b=Mod,u=1,v=0,t; while(b>0){ t=a/b; swap(a-=t*b,b);swap(u-=t*v,v); } return ModInt(u); } ModInt pow(long long n)const{ ModInt ret(1),mul(x); while(n>0){ if(n&1) ret*=mul; mul*=mul;n>>=1; } return ret; } friend ostream &operator<<(ostream &os,const ModInt &p){return os<>(istream &is,ModInt &a){long long t;is>>t;a=ModInt(t);return (is);} static int get_mod(){return Mod;} }; using mint=ModInt; template struct comcalc{ vector fact,finv,inv; comcalc():fact(MAX),finv(MAX),inv(MAX){ fact[0]=mint(1),fact[1]=mint(1),finv[0]=mint(1),finv[1]=mint(1),inv[1]=mint(1); for(int i=2;in-r) r=n-r; if(r==0) return 1; mint a=1,b=mint(fact_mod(r)).inverse(); for(int i=0;i; template struct SegmentTree{ using F=function; int sz; vector seg; const F f; const Monoid gen; SegmentTree(int n,const F f,const Monoid &gen):f(f),gen(gen){ sz=1; while(sz0;k--) seg[k]=f(seg[2*k],seg[2*k+1]); } void update(int k,const Monoid &x){ k+=sz; seg[k]=x; while(k>>=1) seg[k]=f(seg[2*k],seg[2*k+1]); } // [a,b) Monoid query(int a,int b){ Monoid L=gen,R=gen; for(a+=sz,b+=sz;a>=1,b>>=1){ if(a&1) L=f(L,seg[a++]); if(b&1) R=f(seg[--b],R); } return f(L,R); } Monoid operator[](const int &k)const { return seg[k+sz]; } }; mint f(mint a,mint b){ return a+b; } signed main(){ int n,m,k;cin>>n>>m>>k; int l[m],r[m]; rep(i,m){ cin>>l[i]>>r[i];l[i]--,r[i]--; } SegmentTree seg(n,f,mint(0)); seg.set(0,mint(1)); seg.build(); rep(_,k){ mint imos[n+1]; rep(i,n+1)imos[i]=mint(0); rep(i,m){ mint s=seg.query(l[i],r[i]+1); imos[l[i]]+=s; imos[r[i]+1]-=s; } mint s=mint(0); rep(i,n){ s+=imos[i]; seg.update(i,s); } } cout<