| # |
Submission time |
Handle |
Problem |
Language |
Result |
Execution time |
Memory |
| 480985 |
2021-10-19T04:56:56 Z |
pure_mem |
Tug of War (BOI15_tug) |
C++17 |
|
641 ms |
8448 KB |
#include <bits/stdc++.h>
#define ll long long
#define X first
#define Y second
#define MP make_pair
using namespace std;
const int N = 6e4 + 1, M = 10 * N;
const int mod = 1e9 + 7;
int n, k, deg[N], vis[N], w[N];
vector< pair<int, int> > g[N];
bitset<M> dp;
int main() {
ios::sync_with_stdio(0);
cin.tie(0), cout.tie(0);
cin >> n >> k;
int sum = 0;
for(int i = 1, x, y;i <= n + n;i++) {
cin >> x >> y >> w[i], y += n;
g[x].push_back(MP(y, i)), deg[x]++;
g[y].push_back(MP(x, i)), deg[y]++;
}
{
set< pair<int, int> > st;
for(int i = 1;i <= n + n;i++)
st.insert(MP(deg[i], i));
while(!st.empty()) {
int pos = st.begin()->Y;
st.erase(st.begin());
if(deg[pos] == 0) return cout << "NO", 0;
else if(deg[pos] != 1) break;
for(auto [to, id]: g[pos]) {
if(vis[id]) continue;
vis[id] = 1;
st.erase(MP(deg[to], to));
if(pos > n) sum -= w[id];
else sum += w[id];
deg[to]--, deg[pos]--;
st.insert(MP(deg[to], to));
break;
}
}
}
dp[0] = 1;
for(int i = 1;i <= n + n;i++) {
int bl = 0;
function<void(int)> dfs;
dfs = [&](int v){
int cnt = 0;
for(auto [to, id]: g[v]) {
if(vis[id]) continue;
vis[id] = 1;
if(v <= n) bl += w[id];
else bl -= w[id];
dfs(to);
cnt++;
}
assert(cnt <= 1);
};
dfs(i);
if(bl == 0) continue;
bl = abs(bl), sum += bl, dp |= dp << bl;
}
string ans = "NO";
for(int i = 0;i < M;i++) {
if(dp[i] && abs(sum - 2 * i) <= k) {
ans = "YES";
}
}
cout << ans;
return 0;
}
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
2 ms |
1868 KB |
Output is correct |
| 2 |
Correct |
2 ms |
1868 KB |
Output is correct |
| 3 |
Correct |
2 ms |
1872 KB |
Output is correct |
| 4 |
Correct |
2 ms |
1956 KB |
Output is correct |
| 5 |
Correct |
2 ms |
1868 KB |
Output is correct |
| 6 |
Correct |
2 ms |
1868 KB |
Output is correct |
| 7 |
Correct |
2 ms |
1868 KB |
Output is correct |
| 8 |
Correct |
2 ms |
1868 KB |
Output is correct |
| 9 |
Correct |
2 ms |
1868 KB |
Output is correct |
| 10 |
Correct |
3 ms |
1868 KB |
Output is correct |
| 11 |
Correct |
3 ms |
1868 KB |
Output is correct |
| 12 |
Correct |
3 ms |
1868 KB |
Output is correct |
| 13 |
Correct |
2 ms |
1868 KB |
Output is correct |
| 14 |
Correct |
3 ms |
1868 KB |
Output is correct |
| 15 |
Correct |
2 ms |
1872 KB |
Output is correct |
| 16 |
Correct |
2 ms |
1868 KB |
Output is correct |
| 17 |
Correct |
2 ms |
1868 KB |
Output is correct |
| 18 |
Correct |
2 ms |
1868 KB |
Output is correct |
| 19 |
Correct |
2 ms |
1868 KB |
Output is correct |
| 20 |
Correct |
2 ms |
1884 KB |
Output is correct |
| 21 |
Correct |
2 ms |
1872 KB |
Output is correct |
| 22 |
Correct |
2 ms |
1868 KB |
Output is correct |
| 23 |
Correct |
2 ms |
1868 KB |
Output is correct |
| 24 |
Correct |
2 ms |
1868 KB |
Output is correct |
| 25 |
Correct |
2 ms |
1948 KB |
Output is correct |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
2 ms |
1868 KB |
Output is correct |
| 2 |
Correct |
2 ms |
1868 KB |
Output is correct |
| 3 |
Correct |
2 ms |
1872 KB |
Output is correct |
| 4 |
Correct |
2 ms |
1956 KB |
Output is correct |
| 5 |
Correct |
2 ms |
1868 KB |
Output is correct |
| 6 |
Correct |
2 ms |
1868 KB |
Output is correct |
| 7 |
Correct |
2 ms |
1868 KB |
Output is correct |
| 8 |
Correct |
2 ms |
1868 KB |
Output is correct |
| 9 |
Correct |
2 ms |
1868 KB |
Output is correct |
| 10 |
Correct |
3 ms |
1868 KB |
Output is correct |
| 11 |
Correct |
3 ms |
1868 KB |
Output is correct |
| 12 |
Correct |
3 ms |
1868 KB |
Output is correct |
| 13 |
Correct |
2 ms |
1868 KB |
Output is correct |
| 14 |
Correct |
3 ms |
1868 KB |
Output is correct |
| 15 |
Correct |
2 ms |
1872 KB |
Output is correct |
| 16 |
Correct |
2 ms |
1868 KB |
Output is correct |
| 17 |
Correct |
2 ms |
1868 KB |
Output is correct |
| 18 |
Correct |
2 ms |
1868 KB |
Output is correct |
| 19 |
Correct |
2 ms |
1868 KB |
Output is correct |
| 20 |
Correct |
2 ms |
1884 KB |
Output is correct |
| 21 |
Correct |
2 ms |
1872 KB |
Output is correct |
| 22 |
Correct |
2 ms |
1868 KB |
Output is correct |
| 23 |
Correct |
2 ms |
1868 KB |
Output is correct |
| 24 |
Correct |
2 ms |
1868 KB |
Output is correct |
| 25 |
Correct |
2 ms |
1948 KB |
Output is correct |
| 26 |
Correct |
41 ms |
2252 KB |
Output is correct |
| 27 |
Correct |
10 ms |
2252 KB |
Output is correct |
| 28 |
Correct |
41 ms |
2252 KB |
Output is correct |
| 29 |
Correct |
9 ms |
2252 KB |
Output is correct |
| 30 |
Correct |
39 ms |
2252 KB |
Output is correct |
| 31 |
Correct |
10 ms |
2356 KB |
Output is correct |
| 32 |
Correct |
45 ms |
2372 KB |
Output is correct |
| 33 |
Correct |
9 ms |
2364 KB |
Output is correct |
| 34 |
Correct |
6 ms |
2252 KB |
Output is correct |
| 35 |
Correct |
9 ms |
2252 KB |
Output is correct |
| 36 |
Correct |
39 ms |
2252 KB |
Output is correct |
| 37 |
Correct |
9 ms |
2272 KB |
Output is correct |
| 38 |
Correct |
40 ms |
2252 KB |
Output is correct |
| 39 |
Correct |
10 ms |
2268 KB |
Output is correct |
| 40 |
Correct |
40 ms |
2348 KB |
Output is correct |
| 41 |
Correct |
9 ms |
2252 KB |
Output is correct |
| 42 |
Correct |
44 ms |
2252 KB |
Output is correct |
| 43 |
Correct |
10 ms |
2364 KB |
Output is correct |
| 44 |
Correct |
40 ms |
2252 KB |
Output is correct |
| 45 |
Correct |
10 ms |
2252 KB |
Output is correct |
| 46 |
Correct |
57 ms |
2336 KB |
Output is correct |
| 47 |
Correct |
4 ms |
2252 KB |
Output is correct |
| 48 |
Correct |
23 ms |
2336 KB |
Output is correct |
| 49 |
Correct |
23 ms |
2380 KB |
Output is correct |
| 50 |
Correct |
45 ms |
2336 KB |
Output is correct |
| 51 |
Correct |
44 ms |
2276 KB |
Output is correct |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
14 ms |
3916 KB |
Output is correct |
| 2 |
Correct |
11 ms |
3932 KB |
Output is correct |
| 3 |
Correct |
16 ms |
3808 KB |
Output is correct |
| 4 |
Correct |
11 ms |
3916 KB |
Output is correct |
| 5 |
Correct |
12 ms |
3828 KB |
Output is correct |
| 6 |
Correct |
18 ms |
3912 KB |
Output is correct |
| 7 |
Correct |
13 ms |
3808 KB |
Output is correct |
| 8 |
Correct |
12 ms |
3908 KB |
Output is correct |
| 9 |
Correct |
13 ms |
3916 KB |
Output is correct |
| 10 |
Correct |
12 ms |
3916 KB |
Output is correct |
| 11 |
Correct |
13 ms |
3808 KB |
Output is correct |
| 12 |
Correct |
13 ms |
3880 KB |
Output is correct |
| 13 |
Correct |
12 ms |
3808 KB |
Output is correct |
| 14 |
Correct |
13 ms |
3800 KB |
Output is correct |
| 15 |
Correct |
13 ms |
3916 KB |
Output is correct |
| 16 |
Correct |
14 ms |
3916 KB |
Output is correct |
| 17 |
Correct |
11 ms |
3916 KB |
Output is correct |
| 18 |
Correct |
14 ms |
3896 KB |
Output is correct |
| 19 |
Correct |
11 ms |
3916 KB |
Output is correct |
| 20 |
Correct |
17 ms |
3904 KB |
Output is correct |
| 21 |
Correct |
11 ms |
3788 KB |
Output is correct |
| 22 |
Correct |
17 ms |
3932 KB |
Output is correct |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
2 ms |
1868 KB |
Output is correct |
| 2 |
Correct |
2 ms |
1868 KB |
Output is correct |
| 3 |
Correct |
2 ms |
1872 KB |
Output is correct |
| 4 |
Correct |
2 ms |
1956 KB |
Output is correct |
| 5 |
Correct |
2 ms |
1868 KB |
Output is correct |
| 6 |
Correct |
2 ms |
1868 KB |
Output is correct |
| 7 |
Correct |
2 ms |
1868 KB |
Output is correct |
| 8 |
Correct |
2 ms |
1868 KB |
Output is correct |
| 9 |
Correct |
2 ms |
1868 KB |
Output is correct |
| 10 |
Correct |
3 ms |
1868 KB |
Output is correct |
| 11 |
Correct |
3 ms |
1868 KB |
Output is correct |
| 12 |
Correct |
3 ms |
1868 KB |
Output is correct |
| 13 |
Correct |
2 ms |
1868 KB |
Output is correct |
| 14 |
Correct |
3 ms |
1868 KB |
Output is correct |
| 15 |
Correct |
2 ms |
1872 KB |
Output is correct |
| 16 |
Correct |
2 ms |
1868 KB |
Output is correct |
| 17 |
Correct |
2 ms |
1868 KB |
Output is correct |
| 18 |
Correct |
2 ms |
1868 KB |
Output is correct |
| 19 |
Correct |
2 ms |
1868 KB |
Output is correct |
| 20 |
Correct |
2 ms |
1884 KB |
Output is correct |
| 21 |
Correct |
2 ms |
1872 KB |
Output is correct |
| 22 |
Correct |
2 ms |
1868 KB |
Output is correct |
| 23 |
Correct |
2 ms |
1868 KB |
Output is correct |
| 24 |
Correct |
2 ms |
1868 KB |
Output is correct |
| 25 |
Correct |
2 ms |
1948 KB |
Output is correct |
| 26 |
Correct |
41 ms |
2252 KB |
Output is correct |
| 27 |
Correct |
10 ms |
2252 KB |
Output is correct |
| 28 |
Correct |
41 ms |
2252 KB |
Output is correct |
| 29 |
Correct |
9 ms |
2252 KB |
Output is correct |
| 30 |
Correct |
39 ms |
2252 KB |
Output is correct |
| 31 |
Correct |
10 ms |
2356 KB |
Output is correct |
| 32 |
Correct |
45 ms |
2372 KB |
Output is correct |
| 33 |
Correct |
9 ms |
2364 KB |
Output is correct |
| 34 |
Correct |
6 ms |
2252 KB |
Output is correct |
| 35 |
Correct |
9 ms |
2252 KB |
Output is correct |
| 36 |
Correct |
39 ms |
2252 KB |
Output is correct |
| 37 |
Correct |
9 ms |
2272 KB |
Output is correct |
| 38 |
Correct |
40 ms |
2252 KB |
Output is correct |
| 39 |
Correct |
10 ms |
2268 KB |
Output is correct |
| 40 |
Correct |
40 ms |
2348 KB |
Output is correct |
| 41 |
Correct |
9 ms |
2252 KB |
Output is correct |
| 42 |
Correct |
44 ms |
2252 KB |
Output is correct |
| 43 |
Correct |
10 ms |
2364 KB |
Output is correct |
| 44 |
Correct |
40 ms |
2252 KB |
Output is correct |
| 45 |
Correct |
10 ms |
2252 KB |
Output is correct |
| 46 |
Correct |
57 ms |
2336 KB |
Output is correct |
| 47 |
Correct |
4 ms |
2252 KB |
Output is correct |
| 48 |
Correct |
23 ms |
2336 KB |
Output is correct |
| 49 |
Correct |
23 ms |
2380 KB |
Output is correct |
| 50 |
Correct |
45 ms |
2336 KB |
Output is correct |
| 51 |
Correct |
44 ms |
2276 KB |
Output is correct |
| 52 |
Correct |
14 ms |
3916 KB |
Output is correct |
| 53 |
Correct |
11 ms |
3932 KB |
Output is correct |
| 54 |
Correct |
16 ms |
3808 KB |
Output is correct |
| 55 |
Correct |
11 ms |
3916 KB |
Output is correct |
| 56 |
Correct |
12 ms |
3828 KB |
Output is correct |
| 57 |
Correct |
18 ms |
3912 KB |
Output is correct |
| 58 |
Correct |
13 ms |
3808 KB |
Output is correct |
| 59 |
Correct |
12 ms |
3908 KB |
Output is correct |
| 60 |
Correct |
13 ms |
3916 KB |
Output is correct |
| 61 |
Correct |
12 ms |
3916 KB |
Output is correct |
| 62 |
Correct |
13 ms |
3808 KB |
Output is correct |
| 63 |
Correct |
13 ms |
3880 KB |
Output is correct |
| 64 |
Correct |
12 ms |
3808 KB |
Output is correct |
| 65 |
Correct |
13 ms |
3800 KB |
Output is correct |
| 66 |
Correct |
13 ms |
3916 KB |
Output is correct |
| 67 |
Correct |
14 ms |
3916 KB |
Output is correct |
| 68 |
Correct |
11 ms |
3916 KB |
Output is correct |
| 69 |
Correct |
14 ms |
3896 KB |
Output is correct |
| 70 |
Correct |
11 ms |
3916 KB |
Output is correct |
| 71 |
Correct |
17 ms |
3904 KB |
Output is correct |
| 72 |
Correct |
11 ms |
3788 KB |
Output is correct |
| 73 |
Correct |
17 ms |
3932 KB |
Output is correct |
| 74 |
Correct |
587 ms |
8136 KB |
Output is correct |
| 75 |
Correct |
74 ms |
8024 KB |
Output is correct |
| 76 |
Correct |
615 ms |
8252 KB |
Output is correct |
| 77 |
Correct |
70 ms |
8136 KB |
Output is correct |
| 78 |
Correct |
602 ms |
8260 KB |
Output is correct |
| 79 |
Correct |
600 ms |
8140 KB |
Output is correct |
| 80 |
Correct |
63 ms |
8132 KB |
Output is correct |
| 81 |
Correct |
70 ms |
8016 KB |
Output is correct |
| 82 |
Correct |
633 ms |
8240 KB |
Output is correct |
| 83 |
Correct |
641 ms |
8136 KB |
Output is correct |
| 84 |
Correct |
75 ms |
8132 KB |
Output is correct |
| 85 |
Correct |
594 ms |
8136 KB |
Output is correct |
| 86 |
Correct |
66 ms |
8036 KB |
Output is correct |
| 87 |
Correct |
607 ms |
8068 KB |
Output is correct |
| 88 |
Correct |
70 ms |
8132 KB |
Output is correct |
| 89 |
Correct |
614 ms |
8136 KB |
Output is correct |
| 90 |
Correct |
64 ms |
8132 KB |
Output is correct |
| 91 |
Correct |
591 ms |
8132 KB |
Output is correct |
| 92 |
Correct |
70 ms |
8092 KB |
Output is correct |
| 93 |
Correct |
597 ms |
8132 KB |
Output is correct |
| 94 |
Correct |
39 ms |
8004 KB |
Output is correct |
| 95 |
Correct |
336 ms |
8448 KB |
Output is correct |
| 96 |
Correct |
344 ms |
8444 KB |
Output is correct |
| 97 |
Correct |
628 ms |
8132 KB |
Output is correct |
| 98 |
Correct |
610 ms |
8132 KB |
Output is correct |
