Submission #976037

#	Time	Username	Problem	Language	Result	Execution time	Memory
976037		vjudge1	Trol (COCI19_trol)	C++17	50 / 50	1 ms	348 KiB

trol

#include <bits/stdc++.h>
#define int long long
#define ld long double
using namespace std;
const int N=1e9;

signed main(){
    int a; cin>>a;
    for (int i=0;i<a;i++){
        int x,y,ansx=0,ansy=0;
        cin>>x>>y;
        ansx=((x-1)/9)*45;
        ansy=(y/9)*45;

        for (int j=1; j<=((x-1)%9);j++){
            ansx+=j;
        }
        for (int k=1; k<=(y%9);k++){
            ansy+=k;
        }
        cout<<ansy-ansx<<endl;
    }
}

• Subtask 1: 50 / 50