oj.uz

Submission #675297

# Submission time Handle Problem Language Result Execution time Memory
675297 2022-12-27T03:52:23 Z vjudge1 Trampoline (info1cup20_trampoline) C++17
100 / 100
 394 ms 35872 KB 
#include<bits/stdc++.h>
#define ll long long
#define ld long double
#define pll pair<ll,ll>
#define mp make_pair
#define pb push_back
#define fi first
#define se second

using namespace std;

#define LOCALIO "C:/Users/admin/Documents/Code/"

vector <pll> tram;
ll to[200005][20];

void answer(ll a)
{
    if (a) cout << "Yes\n";
    else cout << "No\n";
}

int main()
{
    #ifdef LOCAL
        freopen( LOCALIO "input.txt","r",stdin) ;
        freopen( LOCALIO "output.txt","w",stdout) ;
    #endif

    ios_base::sync_with_stdio(NULL); cin.tie(nullptr); cout.tie(nullptr);
//	freopen("FIBONACCI.inp","r",stdin);
//	freopen("FIBONACCI.out","w",stdout);
    ll R, C, n; cin >> R >> C >> n;
    for (ll i=1; i<=n; i++)
    {
        ll r, c; cin >> r >> c;
        tram.pb({r, c});
    }
    sort(tram.begin(), tram.end());
    for (ll i=0; i<n; i++)
    {
        ll r=tram[i].fi, c=tram[i].se;
        auto ptr=lower_bound(tram.begin(), tram.end(), mp(r+1, c));
        if (ptr==tram.end())
        {
            to[i][0]=-1;
            continue;
        }
        pll ptr1=*ptr; ll r1=ptr1.fi, c1=ptr1.se;
        if (r1!=r+1)
        {
            to[i][0]=-1;
            continue;
        }
        to[i][0]=ptr-tram.begin();
    }
    // for (ll i=0; i<n; i++)
    //     cout << i << " " << to[i][0] << "\n";
    for (ll l=1; l<20; l++)
    {
        for (ll i=0; i<n; i++)
        {
            ll t=to[i][l-1];
            if (t==-1)
            {
                to[i][l]=-1;
                continue;
            }
            to[i][l]=to[t][l-1];
        }
    }
    ll t; cin >> t;
    while(t--)
    {
        ll xa, ya, xb, yb;
        cin>>xa>>ya>>xb>>yb;
        if (xa==xb)
        {
            answer(yb>=ya);
            continue;
        }
        ll jump=xb-xa-1, f=lower_bound(tram.begin(), tram.end(), mp(xa, ya))-tram.begin(), bit=0;
        if (f>=tram.size() || tram[f].fi!=xa)
        {
            answer(0);
            continue;
        }
        while (f!=-1 && jump)
        {
            if (jump&1)
                f=to[f][bit];
            bit++; jump>>=1;
        }
        if (f==-1 || tram[f].se>yb)
            answer(0);
        else answer(1);
    }
}

Compilation message

trampoline.cpp: In function 'int main()':
trampoline.cpp:49:39: warning: unused variable 'c1' [-Wunused-variable]
   49 |         pll ptr1=*ptr; ll r1=ptr1.fi, c1=ptr1.se;
      |                                       ^~
trampoline.cpp:83:14: warning: comparison of integer expressions of different signedness: 'long long int' and 'std::vector<std::pair<long long int, long long int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   83 |         if (f>=tram.size() || tram[f].fi!=xa)
      |             ~^~~~~~~~~~~~~

Subtask #1
23.0 / 23.0

# Verdict Execution time Memory Grader output
1 Correct 4 ms 1880 KB 200 token(s): yes count is 21, no count is 179
2 Correct 4 ms 2136 KB 200 token(s): yes count is 70, no count is 130
3 Correct 3 ms 1620 KB 197 token(s): yes count is 25, no count is 172

Subtask #2
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 120 ms 34844 KB 4000 token(s): yes count is 99, no count is 3901
2 Correct 125 ms 34872 KB 4000 token(s): yes count is 91, no count is 3909
3 Correct 107 ms 34916 KB 4000 token(s): yes count is 4000, no count is 0
4 Correct 110 ms 34788 KB 4000 token(s): yes count is 1991, no count is 2009

Subtask #3
11.0 / 11.0

# Verdict Execution time Memory Grader output
1 Correct 210 ms 35568 KB 200000 token(s): yes count is 110486, no count is 89514
2 Correct 211 ms 35560 KB 200000 token(s): yes count is 114664, no count is 85336
3 Correct 231 ms 35548 KB 200000 token(s): yes count is 86232, no count is 113768
4 Correct 221 ms 35552 KB 200000 token(s): yes count is 94603, no count is 105397
5 Correct 245 ms 35476 KB 200000 token(s): yes count is 94148, no count is 105852
6 Correct 231 ms 35560 KB 200000 token(s): yes count is 97163, no count is 102837

Subtask #4
19.0 / 19.0

# Verdict Execution time Memory Grader output
1 Correct 5 ms 1236 KB 5000 token(s): yes count is 3238, no count is 1762
2 Correct 5 ms 1236 KB 5000 token(s): yes count is 3837, no count is 1163
3 Correct 5 ms 1236 KB 5000 token(s): yes count is 4104, no count is 896
4 Correct 5 ms 1236 KB 5000 token(s): yes count is 3934, no count is 1066
5 Correct 5 ms 1236 KB 5000 token(s): yes count is 3384, no count is 1616
6 Correct 4 ms 1236 KB 5000 token(s): yes count is 3390, no count is 1610

Subtask #5
27.0 / 27.0

# Verdict Execution time Memory Grader output
1 Correct 357 ms 35616 KB 200000 token(s): yes count is 171404, no count is 28596
2 Correct 344 ms 35580 KB 200000 token(s): yes count is 161254, no count is 38746
3 Correct 284 ms 35548 KB 200000 token(s): yes count is 117455, no count is 82545
4 Correct 394 ms 35616 KB 200000 token(s): yes count is 182118, no count is 17882
5 Correct 278 ms 35648 KB 200000 token(s): yes count is 167565, no count is 32435
6 Correct 273 ms 35580 KB 200000 token(s): yes count is 156797, no count is 43203
7 Correct 266 ms 35700 KB 200000 token(s): yes count is 156797, no count is 43203
8 Correct 265 ms 35584 KB 200000 token(s): yes count is 122100, no count is 77900
9 Correct 374 ms 35536 KB 200000 token(s): yes count is 139670, no count is 60330
10 Correct 378 ms 35872 KB 200000 token(s): yes count is 165806, no count is 34194
11 Correct 392 ms 35576 KB 200000 token(s): yes count is 175646, no count is 24354
12 Correct 249 ms 35552 KB 200000 token(s): yes count is 134695, no count is 65305
13 Correct 256 ms 35568 KB 200000 token(s): yes count is 126733, no count is 73267
14 Correct 302 ms 35720 KB 200000 token(s): yes count is 155290, no count is 44710
15 Correct 240 ms 35556 KB 200000 token(s): yes count is 129674, no count is 70326