ll n,a[2d5],q,t,v; ll b,s; ll f(ll x,ll y){ s=0; rep(i,max(0,x-24),t){ s+=a[i]; } rep(i,t,min(n,y)){ s+=a[i]; if(i-24>=0) s-=a[i-24]; if(b<s) b=s; } } { rd(n,a(n),q); f(0,n); rep(q){ rd(t,v); a[--t]=v; f(t,t+24); wt(b); } }