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Submission #491238

# Submission time Handle Problem Language Result Execution time Memory
491238 2021-12-01T06:30:49 Z ktkerem Trol (COCI19_trol) C++17
50 / 50
 0 ms 204 KB 
#include<bits/stdc++.h>
using namespace std;
typedef long long ll;
typedef unsigned long long ull;
ll _i=0;
#define ffn(x) _i=x
#define llll pair<ll , ll>
#define stitr set<llll>::iterator
#define fora(y,x) for(ll y=_i;x>y;y++)
#define pb push_back
#define pf push_front
#define debu cout << "hello\n"
#define fi first
#define sec second
const ll limit = 1e9+7; 
const ll ous=1e5 + 5;
const ll dx[4] = {1 , -1 , 0 , 0} , dy[4] = {0,0,-1,1};
ll don(ll x){
    ll g = 0;
    while(x){
        g+=x%10;
        x/=10;
    }
    if(g >= 10){
        return don(g);
    }
    return g;
}
void solve(){
    ll q;cin >> q;
    while(q--){
        ll l ,r;cin >> l >> r;
        ll o = r - l + 1;
        ll sp = don(l);
        ll topl = 0;
        while(o > 0 && sp < 10){
            topl+=sp;
            o--;
            sp++;
        }
        ll u = o % 9;
        ll kk = o/9;
        ll od = 9 * 5;
        topl+=(u*(u+1) / 2) + (od * kk);
        cout << topl << "\n";
    }
    return;
}
int main(){
    ios_base::sync_with_stdio(false);cin.tie(NULL);
    ll t=1;
    //cin >> t;
    while(t--){
        solve();
    }
    return 0; 
}

Subtask #1
50.0 / 50.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 204 KB Output is correct
2 Correct 0 ms 204 KB Output is correct
3 Correct 0 ms 204 KB Output is correct
4 Correct 0 ms 204 KB Output is correct
5 Correct 0 ms 204 KB Output is correct