oj.uz

Submission #220258

# Submission time Handle Problem Language Result Execution time Memory
220258 2020-04-07T12:51:44 Z Sho10 Subway (info1cup19_subway) C++14
100 / 100
 15 ms 1784 KB 
/*
ID: Sho10
LANG: C++
*/
#include <bits/stdc++.h> //Andrei Alexandru a.k.a Sho10
#define ll long long int
#pragma GCC optimize("O3")
#pragma GCC optimize("Ofast")
#define all(a) (a).begin(), (a).end()
#define sz size
#define f first
#define s second
#define pb push_back
#define er erase
#define in insert
#define mp make_pair
#define pi pair
#define rc(s) return cout<<s,0
#define endl '\n'
#define mod 1000000007
#define PI 3.14159265359
#define CODE_START  ios_base::sync_with_stdio(false);cin.tie(0);cout.tie(0);
using namespace std;
ll n,a[205];
vector<pair<ll,ll>>v;
int32_t main(){
CODE_START;
cin>>n;
v.pb(mp(0,-1));
ll s1=1;
    ll val=sqrt(2*n);
    if(val*(val+1)/2>n){
        val--;
    }
    n=n-val*(val+1)/2;
    for(ll i=1;i<=val;i++)
    {
    v.pb(mp(s1,s1-1));
     s1++;
    }
if(n>=1){
    v.pb(mp(s1,n-1));
}
cout<<v.size()<<endl;
for(ll i=0;i<v.size();i++)
    cout<<v[i].f<<' '<<v[i].s<<endl;
}

Compilation message

subway.cpp: In function 'int32_t main()':
subway.cpp:45:13: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
 for(ll i=0;i<v.size();i++)
            ~^~~~~~~~~

Subtask #1
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 4 ms 384 KB Output is correct
2 Correct 4 ms 384 KB Output is correct
3 Correct 5 ms 384 KB Output is correct
4 Correct 4 ms 384 KB Output is correct
5 Correct 4 ms 384 KB Output is correct

Subtask #2
30.0 / 30.0

# Verdict Execution time Memory Grader output
1 Correct 4 ms 384 KB Output is correct
2 Correct 4 ms 384 KB Output is correct
3 Correct 5 ms 384 KB Output is correct
4 Correct 4 ms 384 KB Output is correct
5 Correct 4 ms 384 KB Output is correct
6 Correct 5 ms 384 KB Output is correct
7 Correct 4 ms 384 KB Output is correct
8 Correct 5 ms 384 KB Output is correct
9 Correct 5 ms 384 KB Output is correct
10 Correct 4 ms 384 KB Output is correct

Subtask #3
50.0 / 50.0

# Verdict Execution time Memory Grader output
1 Correct 4 ms 384 KB Output is correct
2 Correct 4 ms 384 KB Output is correct
3 Correct 5 ms 384 KB Output is correct
4 Correct 4 ms 384 KB Output is correct
5 Correct 4 ms 384 KB Output is correct
6 Correct 5 ms 384 KB Output is correct
7 Correct 4 ms 384 KB Output is correct
8 Correct 5 ms 384 KB Output is correct
9 Correct 5 ms 384 KB Output is correct
10 Correct 4 ms 384 KB Output is correct
11 Correct 6 ms 768 KB Output is correct
12 Correct 7 ms 768 KB Output is correct
13 Correct 6 ms 768 KB Output is correct
14 Correct 6 ms 768 KB Output is correct
15 Correct 7 ms 768 KB Output is correct
16 Correct 12 ms 1784 KB Output is correct
17 Correct 5 ms 384 KB Output is correct
18 Correct 15 ms 1784 KB Output is correct
19 Correct 10 ms 1404 KB Output is correct
20 Correct 10 ms 1276 KB Output is correct