#include using namespace std; typedef signed long long ll; #define _P(...) (void)printf(__VA_ARGS__) #define FOR(x,to) for(x=0;x<(to);x++) #define FORR(x,arr) for(auto& x:arr) #define FORR2(x,y,arr) for(auto& [x,y]:arr) #define ALL(a) (a.begin()),(a.end()) #define ZERO(a) memset(a,0,sizeof(a)) #define MINUS(a) memset(a,0xff,sizeof(a)) template bool chmax(T &a, const T &b) { if(a bool chmin(T &a, const T &b) { if(a>b){a=b;return 1;}return 0;} //------------------------------------------------------- ll X,Y; const ll mo=998244353; void solve() { int i,j,k,l,r,x,y; string s; cin>>X>>Y; ll ret=0; for(y=1;y<=min(Y,100000LL);y++) { ll num=X/y; ret+=y*num%mo; ret+=(num*(num+1)/2)%mo*y%mo; } for(ll num=1;num<=200000;num++) { ll R=X/num; ll L=X/(num+1)+1; R=min(R,Y); L=max(L,100001LL); if(L<=R) { ll p=(L+R)*(R-L+1)/2%mo; ret+=p*num%mo; ret+=(num*(num+1)/2)%mo*p%mo; } } cout<