69706

Run ID	Author	Problem	Lang	Verdict	Time	Memory	Code Length	Submit Time
69706	sh25_wangsj	奇数求和	C++	Accepted	0 MS	252 KB	193	2025-10-11 16:13:30

#include <iostream> using namespace std; int main() { int a,b; cin>>a>>b; double c,d,e; c=a+1-a%2; d=b-1+b%2; e=(c+d)*(d-c+2)/4; cout<<e; return 0; }