oj.uz

Submission #1109133

# Submission time Handle Problem Language Result Execution time Memory
1109133 2024-11-06T05:06:13 Z codexistent Tug of War (BOI15_tug) C++14
100 / 100
 584 ms 35320 KB 
#include <bits/stdc++.h>
using namespace std;
#define MAXN 600005
#define FOR(i, a, b) for(int i = a; i <= b; i++)

multiset<pair<int, int>> e[MAXN];
bool v[MAXN];
int n, k, r = 0, r2 = 0;
bitset<MAXN> bs;

void dfs(int node){
    v[node] = true;
    if(!e[node].size()) return;
    int nxt, cost;
    tie(nxt, cost) = *e[node].begin();

    r += cost;
    if(!v[nxt]){
        e[nxt].erase(e[nxt].find({node, -cost}));
        e[node].clear();
        dfs(nxt);
    }
}

int main(){
    cin >> n >> k;
    FOR(i, 1, 2 * n){
        int l, r, s;
        cin >> l >> r >> s;

        e[l].insert({n + r, s}), e[n + r].insert({l, -s});
    }

    queue<int> q;
    FOR(i, 1, 2 * n) {
        if(e[i].size() == 1) q.push(i);
        if(e[i].size() == 0) return cout << "NO" << endl, 0;
    }

    while(q.size()){
        int qi = q.front(); q.pop();
        if(e[qi].size() == 0) return cout << "NO" << endl, 0;
        
        int nxt, cost;
        tie(nxt, cost) = *e[qi].begin();
        r += cost;

        e[qi].clear();
        e[nxt].erase(e[nxt].find({qi, -cost}));
        if(e[nxt].size() == 1) q.push(nxt);
    }

    vector<int> items;
    if(r) items.push_back(abs(r));
    FOR(i, 1, 2 * n){
        if(!v[i] && e[i].size()){
            r = 0;
            e[i].erase(e[i].begin());

            dfs(i);
            if(r) items.push_back(abs(r));
        }
    }
    r2 = accumulate(items.begin(), items.end(), 0);

    bs[0] = 1;
    for(int i : items) bs |= bs << i;
    FOR(i, 0, r2){
        if(bs[i] && abs(2 * i - r2) <= k) return cout << "YES" << endl, 0; 
    }

    return cout << "NO" << endl, 0;
}

Subtask #1
18.0 / 18.0

# Verdict Execution time Memory Grader output
1 Correct 7 ms 29264 KB Output is correct
2 Correct 8 ms 29264 KB Output is correct
3 Correct 9 ms 29276 KB Output is correct
4 Correct 6 ms 29264 KB Output is correct
5 Correct 6 ms 29136 KB Output is correct
6 Correct 6 ms 29264 KB Output is correct
7 Correct 7 ms 29264 KB Output is correct
8 Correct 7 ms 29264 KB Output is correct
9 Correct 7 ms 29264 KB Output is correct
10 Correct 7 ms 29304 KB Output is correct
11 Correct 7 ms 29264 KB Output is correct
12 Correct 6 ms 29140 KB Output is correct
13 Correct 6 ms 29428 KB Output is correct
14 Correct 7 ms 29264 KB Output is correct
15 Correct 9 ms 29264 KB Output is correct
16 Correct 6 ms 29264 KB Output is correct
17 Correct 7 ms 29276 KB Output is correct
18 Correct 6 ms 29264 KB Output is correct
19 Correct 6 ms 29264 KB Output is correct
20 Correct 6 ms 29140 KB Output is correct
21 Correct 6 ms 29008 KB Output is correct
22 Correct 6 ms 29432 KB Output is correct
23 Correct 6 ms 29264 KB Output is correct
24 Correct 6 ms 29264 KB Output is correct
25 Correct 6 ms 29264 KB Output is correct

Subtask #2
30.0 / 30.0

# Verdict Execution time Memory Grader output
1 Correct 7 ms 29264 KB Output is correct
2 Correct 8 ms 29264 KB Output is correct
3 Correct 9 ms 29276 KB Output is correct
4 Correct 6 ms 29264 KB Output is correct
5 Correct 6 ms 29136 KB Output is correct
6 Correct 6 ms 29264 KB Output is correct
7 Correct 7 ms 29264 KB Output is correct
8 Correct 7 ms 29264 KB Output is correct
9 Correct 7 ms 29264 KB Output is correct
10 Correct 7 ms 29304 KB Output is correct
11 Correct 7 ms 29264 KB Output is correct
12 Correct 6 ms 29140 KB Output is correct
13 Correct 6 ms 29428 KB Output is correct
14 Correct 7 ms 29264 KB Output is correct
15 Correct 9 ms 29264 KB Output is correct
16 Correct 6 ms 29264 KB Output is correct
17 Correct 7 ms 29276 KB Output is correct
18 Correct 6 ms 29264 KB Output is correct
19 Correct 6 ms 29264 KB Output is correct
20 Correct 6 ms 29140 KB Output is correct
21 Correct 6 ms 29008 KB Output is correct
22 Correct 6 ms 29432 KB Output is correct
23 Correct 6 ms 29264 KB Output is correct
24 Correct 6 ms 29264 KB Output is correct
25 Correct 6 ms 29264 KB Output is correct
26 Correct 38 ms 29692 KB Output is correct
27 Correct 19 ms 29520 KB Output is correct
28 Correct 39 ms 29520 KB Output is correct
29 Correct 13 ms 29520 KB Output is correct
30 Correct 48 ms 29520 KB Output is correct
31 Correct 13 ms 29708 KB Output is correct
32 Correct 38 ms 29520 KB Output is correct
33 Correct 12 ms 29520 KB Output is correct
34 Correct 10 ms 29520 KB Output is correct
35 Correct 12 ms 29520 KB Output is correct
36 Correct 38 ms 29688 KB Output is correct
37 Correct 12 ms 29520 KB Output is correct
38 Correct 38 ms 29520 KB Output is correct
39 Correct 13 ms 29520 KB Output is correct
40 Correct 38 ms 29520 KB Output is correct
41 Correct 13 ms 29520 KB Output is correct
42 Correct 39 ms 29520 KB Output is correct
43 Correct 12 ms 29520 KB Output is correct
44 Correct 38 ms 29716 KB Output is correct
45 Correct 12 ms 29520 KB Output is correct
46 Correct 45 ms 29520 KB Output is correct
47 Correct 9 ms 29520 KB Output is correct
48 Correct 35 ms 29520 KB Output is correct
49 Correct 26 ms 29692 KB Output is correct
50 Correct 41 ms 29688 KB Output is correct
51 Correct 39 ms 29520 KB Output is correct

Subtask #3
23.0 / 23.0

# Verdict Execution time Memory Grader output
1 Correct 20 ms 31056 KB Output is correct
2 Correct 21 ms 31056 KB Output is correct
3 Correct 22 ms 31056 KB Output is correct
4 Correct 20 ms 31056 KB Output is correct
5 Correct 23 ms 30936 KB Output is correct
6 Correct 23 ms 31056 KB Output is correct
7 Correct 26 ms 31056 KB Output is correct
8 Correct 21 ms 31056 KB Output is correct
9 Correct 20 ms 31060 KB Output is correct
10 Correct 19 ms 31068 KB Output is correct
11 Correct 19 ms 31056 KB Output is correct
12 Correct 21 ms 31056 KB Output is correct
13 Correct 22 ms 30904 KB Output is correct
14 Correct 21 ms 31056 KB Output is correct
15 Correct 19 ms 31056 KB Output is correct
16 Correct 19 ms 31068 KB Output is correct
17 Correct 21 ms 31056 KB Output is correct
18 Correct 24 ms 31016 KB Output is correct
19 Correct 20 ms 31056 KB Output is correct
20 Correct 19 ms 31056 KB Output is correct
21 Correct 19 ms 30988 KB Output is correct
22 Correct 25 ms 31056 KB Output is correct

Subtask #4
29.0 / 29.0

# Verdict Execution time Memory Grader output
1 Correct 7 ms 29264 KB Output is correct
2 Correct 8 ms 29264 KB Output is correct
3 Correct 9 ms 29276 KB Output is correct
4 Correct 6 ms 29264 KB Output is correct
5 Correct 6 ms 29136 KB Output is correct
6 Correct 6 ms 29264 KB Output is correct
7 Correct 7 ms 29264 KB Output is correct
8 Correct 7 ms 29264 KB Output is correct
9 Correct 7 ms 29264 KB Output is correct
10 Correct 7 ms 29304 KB Output is correct
11 Correct 7 ms 29264 KB Output is correct
12 Correct 6 ms 29140 KB Output is correct
13 Correct 6 ms 29428 KB Output is correct
14 Correct 7 ms 29264 KB Output is correct
15 Correct 9 ms 29264 KB Output is correct
16 Correct 6 ms 29264 KB Output is correct
17 Correct 7 ms 29276 KB Output is correct
18 Correct 6 ms 29264 KB Output is correct
19 Correct 6 ms 29264 KB Output is correct
20 Correct 6 ms 29140 KB Output is correct
21 Correct 6 ms 29008 KB Output is correct
22 Correct 6 ms 29432 KB Output is correct
23 Correct 6 ms 29264 KB Output is correct
24 Correct 6 ms 29264 KB Output is correct
25 Correct 6 ms 29264 KB Output is correct
26 Correct 38 ms 29692 KB Output is correct
27 Correct 19 ms 29520 KB Output is correct
28 Correct 39 ms 29520 KB Output is correct
29 Correct 13 ms 29520 KB Output is correct
30 Correct 48 ms 29520 KB Output is correct
31 Correct 13 ms 29708 KB Output is correct
32 Correct 38 ms 29520 KB Output is correct
33 Correct 12 ms 29520 KB Output is correct
34 Correct 10 ms 29520 KB Output is correct
35 Correct 12 ms 29520 KB Output is correct
36 Correct 38 ms 29688 KB Output is correct
37 Correct 12 ms 29520 KB Output is correct
38 Correct 38 ms 29520 KB Output is correct
39 Correct 13 ms 29520 KB Output is correct
40 Correct 38 ms 29520 KB Output is correct
41 Correct 13 ms 29520 KB Output is correct
42 Correct 39 ms 29520 KB Output is correct
43 Correct 12 ms 29520 KB Output is correct
44 Correct 38 ms 29716 KB Output is correct
45 Correct 12 ms 29520 KB Output is correct
46 Correct 45 ms 29520 KB Output is correct
47 Correct 9 ms 29520 KB Output is correct
48 Correct 35 ms 29520 KB Output is correct
49 Correct 26 ms 29692 KB Output is correct
50 Correct 41 ms 29688 KB Output is correct
51 Correct 39 ms 29520 KB Output is correct
52 Correct 20 ms 31056 KB Output is correct
53 Correct 21 ms 31056 KB Output is correct
54 Correct 22 ms 31056 KB Output is correct
55 Correct 20 ms 31056 KB Output is correct
56 Correct 23 ms 30936 KB Output is correct
57 Correct 23 ms 31056 KB Output is correct
58 Correct 26 ms 31056 KB Output is correct
59 Correct 21 ms 31056 KB Output is correct
60 Correct 20 ms 31060 KB Output is correct
61 Correct 19 ms 31068 KB Output is correct
62 Correct 19 ms 31056 KB Output is correct
63 Correct 21 ms 31056 KB Output is correct
64 Correct 22 ms 30904 KB Output is correct
65 Correct 21 ms 31056 KB Output is correct
66 Correct 19 ms 31056 KB Output is correct
67 Correct 19 ms 31068 KB Output is correct
68 Correct 21 ms 31056 KB Output is correct
69 Correct 24 ms 31016 KB Output is correct
70 Correct 20 ms 31056 KB Output is correct
71 Correct 19 ms 31056 KB Output is correct
72 Correct 19 ms 30988 KB Output is correct
73 Correct 25 ms 31056 KB Output is correct
74 Correct 523 ms 35144 KB Output is correct
75 Correct 84 ms 34888 KB Output is correct
76 Correct 524 ms 35244 KB Output is correct
77 Correct 74 ms 34892 KB Output is correct
78 Correct 535 ms 35320 KB Output is correct
79 Correct 501 ms 35152 KB Output is correct
80 Correct 72 ms 34896 KB Output is correct
81 Correct 67 ms 34944 KB Output is correct
82 Correct 512 ms 35144 KB Output is correct
83 Correct 517 ms 35208 KB Output is correct
84 Correct 92 ms 34888 KB Output is correct
85 Correct 509 ms 35244 KB Output is correct
86 Correct 64 ms 34888 KB Output is correct
87 Correct 507 ms 35148 KB Output is correct
88 Correct 73 ms 34944 KB Output is correct
89 Correct 516 ms 35144 KB Output is correct
90 Correct 68 ms 34888 KB Output is correct
91 Correct 529 ms 35244 KB Output is correct
92 Correct 70 ms 34888 KB Output is correct
93 Correct 584 ms 35244 KB Output is correct
94 Correct 53 ms 34632 KB Output is correct
95 Correct 333 ms 35008 KB Output is correct
96 Correct 296 ms 35144 KB Output is correct
97 Correct 528 ms 35148 KB Output is correct
98 Correct 541 ms 35244 KB Output is correct