Submission #206338

#	Time	Username	Problem	Language	Result	Execution time	Memory
206338		wiwiho	Trol (COCI19_trol)	C++14	50 / 50	5 ms	376 KiB

trol

//#define NDEBUG

#include <bits/stdc++.h>
#include <bits/extc++.h>

#define StarBurstStream ios_base::sync_with_stdio(false); cin.tie(0); cout.tie(0);
#define iter(a) a.begin(), a.end()
#define riter(a) a.rbegin(), a.rend()
#define lsort(a) sort(iter(a))
#define gsort(a) sort(riter(a))
#define mp(a, b) make_pair(a, b)
#define pb(a) push_back(a)
#define eb(a) emplace_back(a)
#define pf(a) push_front(a)
#define pob pop_back()
#define pof pop_front()
#define F first
#define S second
#define printv(a, b) {bool pvaspace=false; \
for(auto pva : a){ \
    if(pvaspace) b << " "; pvaspace=true;\
    b << pva;\
}\
b << "\n";}
#define pii pair<int, int>
#define pll pair<ll, ll>
#define tiii tuple<int, int, int>
#define mt make_tuple
#define gt(t, i) get<i>(t)
#define iceil(a, b) ((a) / (b) + !!((a) % (b)))

//#define TEST

typedef long long ll;
typedef unsigned long long ull;

using namespace std;
using namespace __gnu_pbds;

const ll MOD = 1000000007;
const ll MAX = 2147483647;

template<typename A, typename B>
ostream &operator<<(ostream &o, pair<A, B> p){
    return o << '(' << p.F << ',' << p.S << ')';
}

int main(){
    StarBurstStream

    int q;
    cin >> q;

    while(q--){
        ll l, r;
        cin >> l >> r;

        if(r - l + 1 <= 18){
            ll ans = 0;
            for(ll i = l; i <= r; i++) ans += i % 9 == 0 ? 9 : i % 9;
            cout << ans << "\n";
            continue;
        }

        ll ans = 0;
        while(l % 9 != 1){
            ans += l % 9 == 0 ? 9 : l % 9;
            l++;
        }
        while(r % 9 != 0){
            ans += r % 9 == 0 ? 9 : r % 9;
            r--;
        }

        ans += (r - l + 1) / 9 * 45;
        cout << ans << "\n";
    }

    return 0;
}

• Subtask 1: 50 / 50