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Submission #389774

# Submission time Handle Problem Language Result Execution time Memory
389774 2021-04-14T14:04:00 Z georgerapeanu Worst Reporter 4 (JOI21_worst_reporter4) C++11
79 / 100
 926 ms 524292 KB 
#include <bits/stdc++.h>

using namespace std;

struct slope_magic_t{
    map<int,long long> slope_change;

    void merge(slope_magic_t &other){
        for(auto it:other.slope_change){
            slope_change[it.first] += it.second;
        }
    }

    void add_value(int value,int cost){
        slope_change[0] += cost;
        slope_change[value] -= cost;
        slope_change[value + 1] += cost;

        long long relative_height = 0;
        map<int,long long> :: iterator it,it2;
        it = slope_change.lower_bound(value);

        long long current_diff = slope_change[value];

        while(current_diff < 0){
            it2 = it;
            if(it2 == slope_change.begin()){
                break;
            }
            it2--;
            if(it2 == slope_change.begin() || current_diff + it2->second > 0){
                it2->second += current_diff;
                slope_change.erase(it);
                break;
            }
            relative_height = -current_diff - it2->second;
            slope_change.erase(it2);
            current_diff = -relative_height;
        }
    }

    int size(){
        return (int)slope_change.size();
    }

    void swap(slope_magic_t &other){
        slope_change.swap(other.slope_change);
    }
};

const int NMAX = 2e5;

int n;
slope_magic_t dp[NMAX + 5];
vector<int> graph[NMAX + 5];
int father[NMAX + 5];
int c[NMAX + 5];
int h[NMAX + 5];

void dfs(int nod,int lvl){
    for(auto it:graph[nod]){
        dfs(it,lvl + 1);
        if(dp[it].size() > dp[nod].size()){
            dp[nod].swap(dp[it]);
        }
        dp[nod].merge(dp[it]);
    }
    dp[nod].add_value(h[nod],c[nod]);
}

int main(){

    scanf("%d",&n);

    for(int i = 1;i <= n;i++){
        scanf("%d %d %d",&father[i],&h[i],&c[i]);
        if(father[i] == i){
            continue;
        }
        graph[father[i]].push_back(i);
    }

    dfs(1,0);
    
    printf("%lld\n",dp[1].slope_change[0]);

    return 0;
}

Compilation message

worst_reporter2.cpp: In function 'int main()':
worst_reporter2.cpp:73:10: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   73 |     scanf("%d",&n);
      |     ~~~~~^~~~~~~~~
worst_reporter2.cpp:76:14: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   76 |         scanf("%d %d %d",&father[i],&h[i],&c[i]);
      |         ~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

Subtask #1
14.0 / 14.0

# Verdict Execution time Memory Grader output
1 Correct 9 ms 14284 KB Output is correct
2 Correct 8 ms 14408 KB Output is correct
3 Correct 8 ms 14284 KB Output is correct
4 Correct 8 ms 14284 KB Output is correct
5 Correct 16 ms 15676 KB Output is correct
6 Correct 13 ms 15308 KB Output is correct
7 Correct 13 ms 15052 KB Output is correct
8 Correct 15 ms 15812 KB Output is correct
9 Correct 14 ms 15300 KB Output is correct
10 Correct 13 ms 15052 KB Output is correct
11 Correct 12 ms 14980 KB Output is correct
12 Correct 13 ms 15436 KB Output is correct
13 Correct 13 ms 15360 KB Output is correct
14 Correct 13 ms 15012 KB Output is correct
15 Correct 12 ms 15052 KB Output is correct
16 Correct 15 ms 16076 KB Output is correct
17 Correct 14 ms 15436 KB Output is correct
18 Correct 34 ms 14880 KB Output is correct
19 Correct 13 ms 15436 KB Output is correct
20 Correct 12 ms 15236 KB Output is correct
21 Correct 12 ms 15308 KB Output is correct
22 Correct 13 ms 15440 KB Output is correct
23 Correct 12 ms 15160 KB Output is correct
24 Correct 13 ms 15428 KB Output is correct
25 Correct 12 ms 15308 KB Output is correct
26 Correct 16 ms 15684 KB Output is correct
27 Correct 14 ms 15536 KB Output is correct
28 Correct 13 ms 15556 KB Output is correct
29 Correct 13 ms 15564 KB Output is correct
30 Correct 14 ms 15540 KB Output is correct
31 Correct 13 ms 15436 KB Output is correct

Subtask #2
65.0 / 65.0

# Verdict Execution time Memory Grader output
1 Correct 15 ms 15692 KB Output is correct
2 Correct 418 ms 82812 KB Output is correct
3 Correct 334 ms 57772 KB Output is correct
4 Correct 425 ms 79808 KB Output is correct
5 Correct 331 ms 57908 KB Output is correct
6 Correct 267 ms 38932 KB Output is correct
7 Correct 219 ms 34512 KB Output is correct
8 Correct 204 ms 53260 KB Output is correct
9 Correct 194 ms 53188 KB Output is correct
10 Correct 140 ms 53224 KB Output is correct
11 Correct 220 ms 39344 KB Output is correct
12 Correct 187 ms 39236 KB Output is correct
13 Correct 409 ms 107736 KB Output is correct
14 Correct 301 ms 72124 KB Output is correct
15 Correct 137 ms 34480 KB Output is correct
16 Correct 326 ms 55560 KB Output is correct
17 Correct 199 ms 48704 KB Output is correct
18 Correct 134 ms 48452 KB Output is correct
19 Correct 294 ms 57188 KB Output is correct
20 Correct 153 ms 44724 KB Output is correct
21 Correct 384 ms 56064 KB Output is correct
22 Correct 167 ms 49088 KB Output is correct
23 Correct 312 ms 65764 KB Output is correct
24 Correct 298 ms 57964 KB Output is correct
25 Correct 238 ms 60740 KB Output is correct
26 Correct 231 ms 62532 KB Output is correct
27 Correct 262 ms 57924 KB Output is correct
28 Correct 259 ms 57880 KB Output is correct

Subtask #3
0 / 21.0

# Verdict Execution time Memory Grader output
1 Correct 9 ms 14284 KB Output is correct
2 Correct 8 ms 14408 KB Output is correct
3 Correct 8 ms 14284 KB Output is correct
4 Correct 8 ms 14284 KB Output is correct
5 Correct 16 ms 15676 KB Output is correct
6 Correct 13 ms 15308 KB Output is correct
7 Correct 13 ms 15052 KB Output is correct
8 Correct 15 ms 15812 KB Output is correct
9 Correct 14 ms 15300 KB Output is correct
10 Correct 13 ms 15052 KB Output is correct
11 Correct 12 ms 14980 KB Output is correct
12 Correct 13 ms 15436 KB Output is correct
13 Correct 13 ms 15360 KB Output is correct
14 Correct 13 ms 15012 KB Output is correct
15 Correct 12 ms 15052 KB Output is correct
16 Correct 15 ms 16076 KB Output is correct
17 Correct 14 ms 15436 KB Output is correct
18 Correct 34 ms 14880 KB Output is correct
19 Correct 13 ms 15436 KB Output is correct
20 Correct 12 ms 15236 KB Output is correct
21 Correct 12 ms 15308 KB Output is correct
22 Correct 13 ms 15440 KB Output is correct
23 Correct 12 ms 15160 KB Output is correct
24 Correct 13 ms 15428 KB Output is correct
25 Correct 12 ms 15308 KB Output is correct
26 Correct 16 ms 15684 KB Output is correct
27 Correct 14 ms 15536 KB Output is correct
28 Correct 13 ms 15556 KB Output is correct
29 Correct 13 ms 15564 KB Output is correct
30 Correct 14 ms 15540 KB Output is correct
31 Correct 13 ms 15436 KB Output is correct
32 Correct 15 ms 15692 KB Output is correct
33 Correct 418 ms 82812 KB Output is correct
34 Correct 334 ms 57772 KB Output is correct
35 Correct 425 ms 79808 KB Output is correct
36 Correct 331 ms 57908 KB Output is correct
37 Correct 267 ms 38932 KB Output is correct
38 Correct 219 ms 34512 KB Output is correct
39 Correct 204 ms 53260 KB Output is correct
40 Correct 194 ms 53188 KB Output is correct
41 Correct 140 ms 53224 KB Output is correct
42 Correct 220 ms 39344 KB Output is correct
43 Correct 187 ms 39236 KB Output is correct
44 Correct 409 ms 107736 KB Output is correct
45 Correct 301 ms 72124 KB Output is correct
46 Correct 137 ms 34480 KB Output is correct
47 Correct 326 ms 55560 KB Output is correct
48 Correct 199 ms 48704 KB Output is correct
49 Correct 134 ms 48452 KB Output is correct
50 Correct 294 ms 57188 KB Output is correct
51 Correct 153 ms 44724 KB Output is correct
52 Correct 384 ms 56064 KB Output is correct
53 Correct 167 ms 49088 KB Output is correct
54 Correct 312 ms 65764 KB Output is correct
55 Correct 298 ms 57964 KB Output is correct
56 Correct 238 ms 60740 KB Output is correct
57 Correct 231 ms 62532 KB Output is correct
58 Correct 262 ms 57924 KB Output is correct
59 Correct 259 ms 57880 KB Output is correct
60 Runtime error 926 ms 524292 KB Execution killed with signal 9
61 Halted 0 ms 0 KB -