Submission #346939

#	Time	Username	Problem	Language	Result	Execution time	Memory
346939		Nursik	Trol (COCI19_trol)	C++14	50 / 50	1 ms	364 KiB

trol

#include <bits/stdc++.h>
 
#define f first
#define s second
#define ll long long
#define pb push_back
#define all(v) v.begin(),v.end() 
#define ld long double
#define fi first
#define se second
 
using namespace std; 
 
void data() {
	#ifdef NURS
        freopen("main.in", "r", stdin);
        freopen("main.out", "w", stdout);
    #endif	
} 
void win()
{	
	ios_base::sync_with_stdio(0),
	cin.tie(0),cout.tie(0);
}
 
int block = 400;
const ld eps = 1e-7; 
 
const int N = 3e5 + 500;
const int mod = 1e9 + 7;
const int mod2 = 998244353;
 
const ll hh = 29;
const ll hh2 = 31;

int t, sum;       
main()
{
	data();              
	win();             
	cin >> t;
	while (t--)
	{
		ll l, r;
		cin >> l >> r;
		ll prev = l;
		ll ans = 0;
		while (l <= r)
		{
			prev = l;
			while (prev / 10 > 0)
			{
				sum = 0;
				while (prev > 0)
					sum += prev % 10, prev /= 10;
				prev = sum;
			}
			ans += prev;
			if (prev == 9)
				break;
			l++;
		}
		while (r > l)
		{
			prev = r;
			while (prev / 10 > 0)
			{
				sum = 0;
				while (prev > 0)
					sum += prev % 10, prev /= 10;
				prev = sum;
			}
			ans += prev;
			if (prev == 1)
				break;
			r--;
		}
	//	cout << l << " " << r << '\n';
		cout << ans + (r - l - 1) / 9 * 9 * 10 / 2 << '\n';
	}
}
/*
Если я солью, то я обязательно затащю
*/

Compilation message (stderr)

trol.cpp:37:6: warning: ISO C++ forbids declaration of 'main' with no type [-Wreturn-type]
   37 | main()
      |      ^

• Subtask 1: 50 / 50