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QOJ

ID	Problem	Submitter	Result	Time	Memory	Language	File size	Submit time	Judge time
#105267	#6130. Plants vs. Zombies	Sorting^#	WA	182ms	4984kb	C++20	1.4kb	2023-05-13 20:19:17	2023-05-13 20:19:19

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你现在查看的是最新测评结果

[2023-08-10 23:21:45]
System Update: QOJ starts to keep a history of the judgings of all the submissions.

[2023-05-13 20:19:19]
评测

测评结果：WA
用时：182ms
内存：4984kb

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[2023-05-13 20:19:17]
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answer

#include<bits/stdc++.h>
using namespace std ;
typedef long long ll ;
typedef unsigned long long ull ;
typedef pair < int , int > pii ;
typedef vector < int > vi ;
#define fi first
#define se second
mt19937 rng(chrono::high_resolution_clock::now().time_since_epoch().count());

const int MAXN = 2e5 + 7 ;
const ll inf = 1e17 + 6 ;

ll n , k ;
ll a[ MAXN ] ;

ll req[ MAXN ] ;

bool f ( ll targ ) {
    if ( targ == 0 ) { return true ; }
    for ( int i = 1 ; i <= n ; ++ i ) {
        req[ i ] = ( targ + a[ i ] - 1 ) / a[ i ] ;
        -- req[ i ] ;
    }
    ll need = n ;
    for ( int i = 1 ; i < n ; ++ i ) {
        if ( req[ i ] < 0 ) { req[ i ] = 0 ; }
        ll take = req[ i ] ;
        req[ i ] -= take ;
        req[ i + 1 ] -= take ;
        if ( req[ i + 1 ] < 0 ) { -- need ; }
        need += 2 * take ;
        if ( need > k ) { return false ; }
    }
    if ( req[ n ] < 0 ) { req[ n ] = 0 ; }
    need += 2 * req[ n ] ;
    return ( need <= k ) ;
}

void solve ( ) {
    cin >> n >> k ;
    for ( int i = 1 ; i <= n ; ++ i ) {
        cin >> a[ i ] ;
    }
    ll l , r , mid ;
    l = 0 , r = inf ;
    while ( l < r ) {
        mid = ( l + r + 1 ) / 2 ;
        if ( f ( mid ) == true ) { l = mid ; }
        else { r = mid - 1 ; }
    }
    cout << l << "\n" ;
}

int main ( ) {
    ios_base :: sync_with_stdio ( false ) ;
    cin.tie ( NULL ) ;
    int t = 1 ; cin >> t ; 
    while ( t -- ) { solve ( ) ; }
    return 0 ;
}

Source code, Language: C++20

Details

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Test #1:

score: 100

Accepted

time: 2ms

memory: 3468kb

input:

output:

6
4

result:

ok 2 number(s): "6 4"

Test #2:

score: -100

Wrong Answer

time: 182ms

memory: 4984kb

input:

116
4 0
3 2 6 6
4 1
3 2 6 6
10 19
10 2 8 4 2 4 9 3 3 3
4 8
3 9 3 6
2 19
2 10
11 15
3 1 1 4 3 7 10 8 6 7 10
10 14
8 7 1 1 10 9 2 8 10 7
2 13
2 3
10 10
8 1 6 6 9 4 7 1 8 8
7 14
6 7 4 5 3 1 3
11 6
8 1 10 9 7 2 6 6 1 3 9
4 10
6 1 3 8
7 7
10 6 2 10 4 7 2
5 11
9 10 5 9 2
9 1
2 4 8 6 2 8 8 1 6
4 5
7 2 9 8
...

output:

0
0
4
6
20
3
2
14
1
4
0
4
2
6
0
4
24
3
30
12
0
2
4
0
0
2
8
0
2
6
24
28
1
4
3
0
4
10
6
4
2
5
0
2
0
7
30
3
0
0
16
8
0
30
3
30
8
2
0
0
2
0
2
0
5
2
0
0
0
0
5
0
5
6
28
0
0
24
4
0
2
4
0
0
14
4
6
1
0
6
14
3
9
0
4
0
10
12
6
8
2
6
12
0
770
0
19
147
710
665
120
0
174
5910828
1000000000000
16561023154

result:

wrong answer 16th numbers differ - expected: '2', found: '4'