답안 #542780

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
542780 2022-03-28T02:58:41 Z QuantumK9 Art Exhibition (JOI18_art) C++17
100 / 100
217 ms 28620 KB
#include <bits/stdc++.h>
#define ll long long
#define pb push_back
#define mp make_pair
#define mt make_tuple 

using namespace std;

void solve(){

    int n; cin >> n;

    pair<ll,ll> painting[n];

    for( int i = 0; i < n; i++ ){
        ll s, v; cin >> s >> v;
        painting[i] = mp( s, v );
    }

    sort( painting, painting+n );

    ll prefixSumsValues[n];
    memset( prefixSumsValues, 0, sizeof prefixSumsValues );

    for( int i = 0; i < n; i++ ){
        if ( i > 0 ){ prefixSumsValues[i] += prefixSumsValues[i-1]; }
        prefixSumsValues[i] += painting[i].second;
    }

    // cout << "Prefix Sums of Values: ";
    // for( ll i : prefixSumsValues ){ cout << i << " "; }
    // cout << endl;

    ll bestChoiceOfK[n];
    memset( bestChoiceOfK, 0, sizeof bestChoiceOfK );

    for( int i = n-1; i >= 0; i-- ){
        bestChoiceOfK[i] = prefixSumsValues[i] - painting[i].first; // sum of 0..i (S) - Amax
        if( i < n-1 ){ bestChoiceOfK[i] =  max( bestChoiceOfK[i], bestChoiceOfK[i+1] ); } // check if greater is better
    }

    ll maxx = 0;

    for( int start_index = 0; start_index < n; start_index++ ){
        ll value = bestChoiceOfK[ start_index ] + painting[ start_index ].first; // add start index
        if ( start_index > 0 ){ value -= prefixSumsValues[ start_index-1]; } // cut back on unnecessary values
        maxx = max( maxx, value );
    }

    cout << maxx << endl;


    return;
}


int main() {
    ios_base::sync_with_stdio(0);
    cin.tie(0); cout.tie(0);

    int t = 1;
    //cin >> t;
    while (t--) { solve(); }

    return 0;
}
# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 212 KB Output is correct
2 Correct 1 ms 212 KB Output is correct
3 Correct 1 ms 340 KB Output is correct
4 Correct 1 ms 320 KB Output is correct
5 Correct 1 ms 212 KB Output is correct
6 Correct 1 ms 316 KB Output is correct
7 Correct 1 ms 212 KB Output is correct
8 Correct 1 ms 212 KB Output is correct
9 Correct 1 ms 212 KB Output is correct
10 Correct 0 ms 212 KB Output is correct
11 Correct 1 ms 316 KB Output is correct
# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 212 KB Output is correct
2 Correct 1 ms 212 KB Output is correct
3 Correct 1 ms 340 KB Output is correct
4 Correct 1 ms 320 KB Output is correct
5 Correct 1 ms 212 KB Output is correct
6 Correct 1 ms 316 KB Output is correct
7 Correct 1 ms 212 KB Output is correct
8 Correct 1 ms 212 KB Output is correct
9 Correct 1 ms 212 KB Output is correct
10 Correct 0 ms 212 KB Output is correct
11 Correct 1 ms 316 KB Output is correct
12 Correct 1 ms 212 KB Output is correct
13 Correct 1 ms 324 KB Output is correct
14 Correct 1 ms 328 KB Output is correct
15 Correct 1 ms 328 KB Output is correct
16 Correct 1 ms 212 KB Output is correct
17 Correct 1 ms 212 KB Output is correct
18 Correct 1 ms 212 KB Output is correct
19 Correct 1 ms 212 KB Output is correct
20 Correct 1 ms 212 KB Output is correct
21 Correct 1 ms 320 KB Output is correct
22 Correct 1 ms 212 KB Output is correct
23 Correct 0 ms 212 KB Output is correct
24 Correct 1 ms 320 KB Output is correct
25 Correct 1 ms 212 KB Output is correct
26 Correct 1 ms 328 KB Output is correct
# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 212 KB Output is correct
2 Correct 1 ms 212 KB Output is correct
3 Correct 1 ms 340 KB Output is correct
4 Correct 1 ms 320 KB Output is correct
5 Correct 1 ms 212 KB Output is correct
6 Correct 1 ms 316 KB Output is correct
7 Correct 1 ms 212 KB Output is correct
8 Correct 1 ms 212 KB Output is correct
9 Correct 1 ms 212 KB Output is correct
10 Correct 0 ms 212 KB Output is correct
11 Correct 1 ms 316 KB Output is correct
12 Correct 1 ms 212 KB Output is correct
13 Correct 1 ms 324 KB Output is correct
14 Correct 1 ms 328 KB Output is correct
15 Correct 1 ms 328 KB Output is correct
16 Correct 1 ms 212 KB Output is correct
17 Correct 1 ms 212 KB Output is correct
18 Correct 1 ms 212 KB Output is correct
19 Correct 1 ms 212 KB Output is correct
20 Correct 1 ms 212 KB Output is correct
21 Correct 1 ms 320 KB Output is correct
22 Correct 1 ms 212 KB Output is correct
23 Correct 0 ms 212 KB Output is correct
24 Correct 1 ms 320 KB Output is correct
25 Correct 1 ms 212 KB Output is correct
26 Correct 1 ms 328 KB Output is correct
27 Correct 2 ms 596 KB Output is correct
28 Correct 2 ms 596 KB Output is correct
29 Correct 2 ms 596 KB Output is correct
30 Correct 3 ms 596 KB Output is correct
31 Correct 2 ms 596 KB Output is correct
32 Correct 2 ms 596 KB Output is correct
33 Correct 2 ms 596 KB Output is correct
34 Correct 2 ms 516 KB Output is correct
35 Correct 2 ms 596 KB Output is correct
36 Correct 2 ms 524 KB Output is correct
37 Correct 2 ms 528 KB Output is correct
38 Correct 2 ms 596 KB Output is correct
39 Correct 3 ms 596 KB Output is correct
40 Correct 2 ms 524 KB Output is correct
41 Correct 3 ms 468 KB Output is correct
42 Correct 2 ms 596 KB Output is correct
43 Correct 2 ms 596 KB Output is correct
44 Correct 2 ms 524 KB Output is correct
45 Correct 2 ms 596 KB Output is correct
46 Correct 2 ms 584 KB Output is correct
47 Correct 2 ms 596 KB Output is correct
48 Correct 2 ms 596 KB Output is correct
49 Correct 2 ms 584 KB Output is correct
50 Correct 3 ms 504 KB Output is correct
51 Correct 2 ms 592 KB Output is correct
# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 212 KB Output is correct
2 Correct 1 ms 212 KB Output is correct
3 Correct 1 ms 340 KB Output is correct
4 Correct 1 ms 320 KB Output is correct
5 Correct 1 ms 212 KB Output is correct
6 Correct 1 ms 316 KB Output is correct
7 Correct 1 ms 212 KB Output is correct
8 Correct 1 ms 212 KB Output is correct
9 Correct 1 ms 212 KB Output is correct
10 Correct 0 ms 212 KB Output is correct
11 Correct 1 ms 316 KB Output is correct
12 Correct 1 ms 212 KB Output is correct
13 Correct 1 ms 324 KB Output is correct
14 Correct 1 ms 328 KB Output is correct
15 Correct 1 ms 328 KB Output is correct
16 Correct 1 ms 212 KB Output is correct
17 Correct 1 ms 212 KB Output is correct
18 Correct 1 ms 212 KB Output is correct
19 Correct 1 ms 212 KB Output is correct
20 Correct 1 ms 212 KB Output is correct
21 Correct 1 ms 320 KB Output is correct
22 Correct 1 ms 212 KB Output is correct
23 Correct 0 ms 212 KB Output is correct
24 Correct 1 ms 320 KB Output is correct
25 Correct 1 ms 212 KB Output is correct
26 Correct 1 ms 328 KB Output is correct
27 Correct 2 ms 596 KB Output is correct
28 Correct 2 ms 596 KB Output is correct
29 Correct 2 ms 596 KB Output is correct
30 Correct 3 ms 596 KB Output is correct
31 Correct 2 ms 596 KB Output is correct
32 Correct 2 ms 596 KB Output is correct
33 Correct 2 ms 596 KB Output is correct
34 Correct 2 ms 516 KB Output is correct
35 Correct 2 ms 596 KB Output is correct
36 Correct 2 ms 524 KB Output is correct
37 Correct 2 ms 528 KB Output is correct
38 Correct 2 ms 596 KB Output is correct
39 Correct 3 ms 596 KB Output is correct
40 Correct 2 ms 524 KB Output is correct
41 Correct 3 ms 468 KB Output is correct
42 Correct 2 ms 596 KB Output is correct
43 Correct 2 ms 596 KB Output is correct
44 Correct 2 ms 524 KB Output is correct
45 Correct 2 ms 596 KB Output is correct
46 Correct 2 ms 584 KB Output is correct
47 Correct 2 ms 596 KB Output is correct
48 Correct 2 ms 596 KB Output is correct
49 Correct 2 ms 584 KB Output is correct
50 Correct 3 ms 504 KB Output is correct
51 Correct 2 ms 592 KB Output is correct
52 Correct 181 ms 28460 KB Output is correct
53 Correct 184 ms 28584 KB Output is correct
54 Correct 174 ms 28576 KB Output is correct
55 Correct 182 ms 28580 KB Output is correct
56 Correct 174 ms 28576 KB Output is correct
57 Correct 175 ms 28576 KB Output is correct
58 Correct 180 ms 28600 KB Output is correct
59 Correct 176 ms 28492 KB Output is correct
60 Correct 217 ms 28588 KB Output is correct
61 Correct 185 ms 28456 KB Output is correct
62 Correct 176 ms 28580 KB Output is correct
63 Correct 187 ms 28576 KB Output is correct
64 Correct 178 ms 28580 KB Output is correct
65 Correct 187 ms 28568 KB Output is correct
66 Correct 185 ms 28620 KB Output is correct
67 Correct 187 ms 28576 KB Output is correct
68 Correct 183 ms 28580 KB Output is correct