| # |
Submission time |
Handle |
Problem |
Language |
Result |
Execution time |
Memory |
| 391834 |
2021-04-20T03:27:40 Z |
Kevin_Zhang_TW |
007 (CEOI14_007) |
C++17 |
|
297 ms |
17664 KB |
#include <bits/stdc++.h>
using namespace std;
using ll = long long;
#define pb emplace_back
#define AI(i) begin(i), end(i)
template<class T> bool chmin(T &a, T b) { return b < a && (a = b, true); }
template<class T> bool chmax(T &a, T b) { return a < b && (a = b, true); }
#ifdef KEV
#define DE(args...) kout("[ " + string(#args) + " ] = ", args)
void kout() { cerr << endl; }
template<class T, class ...U> void kout(T a, U ...b) { cerr << a << ' ', kout(b...); }
template<class T> void debug(T l, T r) { while (l != r) cerr << *l << " \n"[next(l)==r], ++l; }
#else
#define DE(...) 0
#define debug(...) 0
#endif
const int MAX_N = 200010, inf = 1e9;
int n, m, s, d, A, B;
vector<int> edge[MAX_N];
int diss[MAX_N], disd[MAX_N], disa[MAX_N], disb[MAX_N];
void get_dis(int s, int *dis) {
fill(dis, dis + n + 1, inf);
queue<int> q;
q.emplace(s); dis[s] = 0;
while (q.size()) {
int x = q.front(); q.pop();
for (int u : edge[x])
if (chmin(dis[u], dis[x] + 1))
q.emplace(u);
}
}
bool valid(int rest) {
auto test = [&](int x) {
int art = diss[x] + rest;
int ga = art + disa[x], gb = art + disb[x];
if (max(disa[x], disb[x]) > 1) return false;
int da = disd[A], db = disd[B];
if (min(disa[x], disb[x]) == 1) {
if (art <= min(da, db)) return true;
return false;
}
if (ga <= da && gb <= db) return true;
return false;
};
for (int i = 1;i <= n;++i)
if (test(i)) return true;
return false;
}
int32_t main() {
ios_base::sync_with_stdio(0), cin.tie(0);
cin >> n >> m >> s >> d >> A >> B;
for (int a, b, i = 0;i < m;++i) {
cin >> a >> b;
DE(a, b);
edge[a].pb(b), edge[b].pb(a);
}
get_dis(s, diss), get_dis(d, disd);
get_dis(A, disa), get_dis(B, disb);
return 1;
if (!valid(0)) return puts("-1"), 0;
int l = 0, r = n, mid;
while (l < r) {
mid = l + r >> 1;
if (valid(mid+1))
l = mid + 1;
else
r = mid;
}
cout << l << '\n';
}
Compilation message
007.cpp: In function 'int32_t main()':
007.cpp:14:17: warning: statement has no effect [-Wunused-value]
14 | #define DE(...) 0
| ^
007.cpp:66:3: note: in expansion of macro 'DE'
66 | DE(a, b);
| ^~
007.cpp:77:11: warning: suggest parentheses around '+' inside '>>' [-Wparentheses]
77 | mid = l + r >> 1;
| ~~^~~
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Runtime error |
3 ms |
4940 KB |
Execution failed because the return code was nonzero |
| 2 |
Runtime error |
3 ms |
4940 KB |
Execution failed because the return code was nonzero |
| 3 |
Runtime error |
3 ms |
4940 KB |
Execution failed because the return code was nonzero |
| 4 |
Runtime error |
3 ms |
4940 KB |
Execution failed because the return code was nonzero |
| 5 |
Runtime error |
3 ms |
4940 KB |
Execution failed because the return code was nonzero |
| 6 |
Runtime error |
3 ms |
4940 KB |
Execution failed because the return code was nonzero |
| 7 |
Runtime error |
4 ms |
4940 KB |
Execution failed because the return code was nonzero |
| 8 |
Runtime error |
3 ms |
4940 KB |
Execution failed because the return code was nonzero |
| 9 |
Runtime error |
3 ms |
4940 KB |
Execution failed because the return code was nonzero |
| 10 |
Runtime error |
4 ms |
4940 KB |
Execution failed because the return code was nonzero |
| 11 |
Runtime error |
4 ms |
4940 KB |
Execution failed because the return code was nonzero |
| 12 |
Runtime error |
4 ms |
4940 KB |
Execution failed because the return code was nonzero |
| 13 |
Runtime error |
4 ms |
4940 KB |
Execution failed because the return code was nonzero |
| 14 |
Runtime error |
3 ms |
4940 KB |
Execution failed because the return code was nonzero |
| 15 |
Runtime error |
3 ms |
4940 KB |
Execution failed because the return code was nonzero |
| 16 |
Runtime error |
4 ms |
4940 KB |
Execution failed because the return code was nonzero |
| 17 |
Runtime error |
4 ms |
4940 KB |
Execution failed because the return code was nonzero |
| 18 |
Runtime error |
4 ms |
5068 KB |
Execution failed because the return code was nonzero |
| 19 |
Runtime error |
3 ms |
5068 KB |
Execution failed because the return code was nonzero |
| 20 |
Runtime error |
4 ms |
4940 KB |
Execution failed because the return code was nonzero |
| 21 |
Runtime error |
4 ms |
4940 KB |
Execution failed because the return code was nonzero |
| 22 |
Runtime error |
4 ms |
4940 KB |
Execution failed because the return code was nonzero |
| 23 |
Runtime error |
4 ms |
5068 KB |
Execution failed because the return code was nonzero |
| 24 |
Runtime error |
4 ms |
5068 KB |
Execution failed because the return code was nonzero |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Runtime error |
26 ms |
6860 KB |
Execution failed because the return code was nonzero |
| 2 |
Runtime error |
34 ms |
7756 KB |
Execution failed because the return code was nonzero |
| 3 |
Runtime error |
27 ms |
6912 KB |
Execution failed because the return code was nonzero |
| 4 |
Runtime error |
36 ms |
7800 KB |
Execution failed because the return code was nonzero |
| 5 |
Runtime error |
27 ms |
6724 KB |
Execution failed because the return code was nonzero |
| 6 |
Runtime error |
26 ms |
7140 KB |
Execution failed because the return code was nonzero |
| 7 |
Runtime error |
31 ms |
7256 KB |
Execution failed because the return code was nonzero |
| 8 |
Runtime error |
30 ms |
7204 KB |
Execution failed because the return code was nonzero |
| 9 |
Runtime error |
41 ms |
7668 KB |
Execution failed because the return code was nonzero |
| 10 |
Runtime error |
155 ms |
12028 KB |
Execution failed because the return code was nonzero |
| 11 |
Runtime error |
74 ms |
9296 KB |
Execution failed because the return code was nonzero |
| 12 |
Runtime error |
88 ms |
10336 KB |
Execution failed because the return code was nonzero |
| 13 |
Runtime error |
64 ms |
9540 KB |
Execution failed because the return code was nonzero |
| 14 |
Runtime error |
49 ms |
8780 KB |
Execution failed because the return code was nonzero |
| 15 |
Runtime error |
73 ms |
10436 KB |
Execution failed because the return code was nonzero |
| 16 |
Runtime error |
79 ms |
10684 KB |
Execution failed because the return code was nonzero |
| 17 |
Runtime error |
80 ms |
10172 KB |
Execution failed because the return code was nonzero |
| 18 |
Runtime error |
82 ms |
10128 KB |
Execution failed because the return code was nonzero |
| 19 |
Runtime error |
105 ms |
11224 KB |
Execution failed because the return code was nonzero |
| 20 |
Runtime error |
226 ms |
14108 KB |
Execution failed because the return code was nonzero |
| 21 |
Runtime error |
109 ms |
12484 KB |
Execution failed because the return code was nonzero |
| 22 |
Runtime error |
111 ms |
11500 KB |
Execution failed because the return code was nonzero |
| 23 |
Runtime error |
106 ms |
12368 KB |
Execution failed because the return code was nonzero |
| 24 |
Runtime error |
105 ms |
12296 KB |
Execution failed because the return code was nonzero |
| 25 |
Runtime error |
105 ms |
11972 KB |
Execution failed because the return code was nonzero |
| 26 |
Runtime error |
98 ms |
11544 KB |
Execution failed because the return code was nonzero |
| 27 |
Runtime error |
123 ms |
12420 KB |
Execution failed because the return code was nonzero |
| 28 |
Runtime error |
136 ms |
12484 KB |
Execution failed because the return code was nonzero |
| 29 |
Runtime error |
148 ms |
12880 KB |
Execution failed because the return code was nonzero |
| 30 |
Runtime error |
217 ms |
15060 KB |
Execution failed because the return code was nonzero |
| 31 |
Runtime error |
131 ms |
13640 KB |
Execution failed because the return code was nonzero |
| 32 |
Runtime error |
139 ms |
12376 KB |
Execution failed because the return code was nonzero |
| 33 |
Runtime error |
138 ms |
12688 KB |
Execution failed because the return code was nonzero |
| 34 |
Runtime error |
180 ms |
13016 KB |
Execution failed because the return code was nonzero |
| 35 |
Runtime error |
112 ms |
12740 KB |
Execution failed because the return code was nonzero |
| 36 |
Runtime error |
133 ms |
13000 KB |
Execution failed because the return code was nonzero |
| 37 |
Runtime error |
164 ms |
14088 KB |
Execution failed because the return code was nonzero |
| 38 |
Runtime error |
164 ms |
14096 KB |
Execution failed because the return code was nonzero |
| 39 |
Runtime error |
198 ms |
13848 KB |
Execution failed because the return code was nonzero |
| 40 |
Runtime error |
225 ms |
15428 KB |
Execution failed because the return code was nonzero |
| 41 |
Runtime error |
297 ms |
17664 KB |
Execution failed because the return code was nonzero |
