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Submission #338931

# Submission time Handle Problem Language Result Execution time Memory
338931 2020-12-24T09:55:33 Z A_D Trol (COCI19_trol) C++14
30 / 50
 1 ms 364 KB 
#include <bits/stdc++.h>
#define ll long long
#define F first
#define S second
using namespace std;
ll f(int v)
{
    if(v==0)return 0;
    ll k=v/9;
    ll ret=k*(9*10)/2;
    v%=9;
    ret+=v*(v+1)/2;
    return ret;
}
main()
{
    int q;
    cin>>q;
    while(q--)
    {
        ll l,r;
        cin>>l>>r;
        cout<<f(r)-f(l-1)<<endl;
    }
}

Compilation message

trol.cpp:15:6: warning: ISO C++ forbids declaration of 'main' with no type [-Wreturn-type]
   15 | main()
      |      ^

Subtask #1
30.0 / 50.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 364 KB Output is correct
2 Correct 1 ms 364 KB Output is correct
3 Incorrect 1 ms 364 KB Output isn't correct
4 Correct 1 ms 364 KB Output is correct
5 Incorrect 1 ms 364 KB Output isn't correct