oj.uz

Submission #447478

# Submission time Handle Problem Language Result Execution time Memory
447478 2021-07-26T13:32:36 Z LucaIlie Trampoline (info1cup20_trampoline) C++17
100 / 100
 462 ms 27944 KB 
#include <stdio.h>
#include <algorithm>

#define MAX_K 200000
#define MAX_LOG_LIN 30

using namespace std;

struct punct {
    int l, c;
};

int nxt[MAX_K][MAX_LOG_LIN + 1];
struct punct v[MAX_K];

bool cmp ( struct punct a, struct punct b ) {
    if ( a.l == b.l )
        return a.c < b.c;
    return a.l < b.l;
}

int main() {
    int n, m, k, t, lin, st, dr, mij, p, i, j;
    struct punct s, f;

    scanf( "%d%d%d", &n, &m, &k );
    for ( i = 0; i < k; i++ )
        scanf( "%d%d", &v[i].l, &v[i].c );

    sort( v, v + k, cmp );

    j = 0;
    for ( i = 0; i < k; i++ ) {
        while ( j < k && (v[j].l < v[i].l + 1 || (v[j].l == v[i].l + 1 && v[j].c < v[i].c)) )
            j++;
        if ( j < k && v[j].l == v[i].l + 1 )
            nxt[i][0] = j;
        else
            nxt[i][0] = -1;
    }

    for ( j = 1; j <= MAX_LOG_LIN; j++ ) {
        for ( i = 0; i < k; i++ ) {
            if ( nxt[i][j - 1] != -1 )
                nxt[i][j] = nxt[nxt[i][j - 1]][j - 1];
            else
                nxt[i][j] = -1;

        }
    }

    scanf( "%d", &t );
    for ( i = 0; i < t; i++ ) {
        scanf( "%d%d%d%d", &s.l, &s.c, &f.l, &f.c );
        if ( s.l == f.l ) {
            if ( s.c <= f.c )
                printf( "Yes\n" );
            else
                printf( "No\n" );
        } else if ( f.l - s.l > k || f.l - s.l < 0 )
            printf( "No\n" );
        else {
            st = -1;
            dr = k - 1;
            while ( dr - st > 1 ) {
                mij = (st + dr) / 2;
                if ( v[mij].l < s.l || (v[mij].l == s.l && v[mij].c < s.c) )
                    st = mij;
                else
                    dr = mij;
            }
            if ( v[dr].l != s.l )
                printf( "No\n" );
            else {
                lin = f.l - s.l - 1;
                p = dr;
                for ( j = MAX_LOG_LIN; j >= 0; j-- ) {
                    if ( (lin & (1 << j)) > 0 ) {
                        if ( p != -1 )
                            p = nxt[p][j];
                    }
                }
                if ( p != -1 && v[p].l + 1 == f.l && v[p].c <= f.c )
                    printf( "Yes\n" );
                else
                    printf( "No\n" );
            }
        }
    }

    return 0;
}

Compilation message

trampoline.cpp: In function 'int main()':
trampoline.cpp:26:10: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   26 |     scanf( "%d%d%d", &n, &m, &k );
      |     ~~~~~^~~~~~~~~~~~~~~~~~~~~~~~
trampoline.cpp:28:14: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   28 |         scanf( "%d%d", &v[i].l, &v[i].c );
      |         ~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~
trampoline.cpp:52:10: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   52 |     scanf( "%d", &t );
      |     ~~~~~^~~~~~~~~~~~
trampoline.cpp:54:14: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   54 |         scanf( "%d%d%d%d", &s.l, &s.c, &f.l, &f.c );
      |         ~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

Subtask #1
23.0 / 23.0

# Verdict Execution time Memory Grader output
1 Correct 5 ms 1484 KB 200 token(s): yes count is 21, no count is 179
2 Correct 5 ms 1580 KB 200 token(s): yes count is 70, no count is 130
3 Correct 4 ms 1228 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 164 ms 27016 KB 4000 token(s): yes count is 99, no count is 3901
2 Correct 163 ms 27944 KB 4000 token(s): yes count is 91, no count is 3909
3 Correct 165 ms 27588 KB 4000 token(s): yes count is 4000, no count is 0
4 Correct 166 ms 27940 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 352 ms 27724 KB 200000 token(s): yes count is 110486, no count is 89514
2 Correct 340 ms 27796 KB 200000 token(s): yes count is 114664, no count is 85336
3 Correct 339 ms 27740 KB 200000 token(s): yes count is 86232, no count is 113768
4 Correct 350 ms 27796 KB 200000 token(s): yes count is 94603, no count is 105397
5 Correct 334 ms 27728 KB 200000 token(s): yes count is 94148, no count is 105852
6 Correct 325 ms 27780 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 6 ms 1228 KB 5000 token(s): yes count is 3238, no count is 1762
2 Correct 7 ms 1240 KB 5000 token(s): yes count is 3837, no count is 1163
3 Correct 6 ms 1228 KB 5000 token(s): yes count is 4104, no count is 896
4 Correct 7 ms 1236 KB 5000 token(s): yes count is 3934, no count is 1066
5 Correct 7 ms 1228 KB 5000 token(s): yes count is 3384, no count is 1616
6 Correct 7 ms 1228 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 415 ms 27720 KB 200000 token(s): yes count is 171404, no count is 28596
2 Correct 406 ms 27324 KB 200000 token(s): yes count is 161254, no count is 38746
3 Correct 368 ms 27204 KB 200000 token(s): yes count is 117455, no count is 82545
4 Correct 462 ms 27276 KB 200000 token(s): yes count is 182118, no count is 17882
5 Correct 373 ms 27340 KB 200000 token(s): yes count is 167565, no count is 32435
6 Correct 369 ms 27408 KB 200000 token(s): yes count is 156797, no count is 43203
7 Correct 365 ms 27280 KB 200000 token(s): yes count is 156797, no count is 43203
8 Correct 362 ms 27324 KB 200000 token(s): yes count is 122100, no count is 77900
9 Correct 430 ms 27348 KB 200000 token(s): yes count is 139670, no count is 60330
10 Correct 417 ms 27332 KB 200000 token(s): yes count is 165806, no count is 34194
11 Correct 459 ms 27340 KB 200000 token(s): yes count is 175646, no count is 24354
12 Correct 342 ms 27260 KB 200000 token(s): yes count is 134695, no count is 65305
13 Correct 353 ms 27128 KB 200000 token(s): yes count is 126733, no count is 73267
14 Correct 374 ms 27208 KB 200000 token(s): yes count is 155290, no count is 44710
15 Correct 344 ms 27120 KB 200000 token(s): yes count is 129674, no count is 70326