| # |
Submission time |
Handle |
Problem |
Language |
Result |
Execution time |
Memory |
| 530222 |
2022-02-24T20:03:21 Z |
luciocf |
Colors (RMI18_colors) |
C++14 |
|
1364 ms |
24460 KB |
#include <bits/stdc++.h>
#define ff first
#define ss second
using namespace std;
typedef pair<int, int> pii;
const int maxn = 5e5+10;
const int inf = 1e9+10;
int n, m;
int a[maxn], b[maxn];
pii p[maxn];
vector<int> quem[maxn];
bool mark[maxn];
vector<int> grafo[maxn];
struct BinaryLifting
{
int nivel[maxn];
int tab[maxn][20], mn[maxn][20], mx[maxn][20];
void dfs(int u, int p)
{
for (auto v: grafo[u])
{
if (v == p) continue;
nivel[v] = nivel[u]+1, tab[v][0] = u;
dfs(v, u);
}
}
void build(void)
{
for (int i = 1; i <= n; i++)
{
if (tab[i][0] == 0) mx[i][0] = b[i];
else mx[i][0] = max(b[i], b[tab[i][0]]);
if (tab[i][0] == 0) mn[i][0] = a[i];
else mx[i][0] = min(a[i], a[tab[i][0]]);
}
for (int j = 1; j < 20; j++)
{
for (int i = 1; i <= n; i++)
{
tab[i][j] = tab[tab[i][j-1]][j-1];
mx[i][j] = max(mx[i][j-1], mx[tab[i][j-1]][j-1]);
mn[i][j] = min(mn[i][j-1], mn[tab[i][j-1]][j-1]);
}
}
}
int get_mn(int u, int v)
{
if (nivel[u] < nivel[v]) swap(u, v);
int ans = inf;
for (int i = 19; i >= 0; i--)
if (nivel[u]-(1<<i) >= nivel[v])
ans = min(ans, mn[u][i]), u = tab[u][i];
if (u == v) return ans;
for (int i = 19; i >= 0; i--)
if (tab[u][i] && tab[v][i] && tab[u][i] != tab[v][i])
ans = min({ans, mn[u][i], mn[v][i]}), u = tab[u][i], v = tab[v][i];
return min({ans, mn[u][0], mn[v][0]});
}
int get_mx(int u, int v)
{
if (nivel[u] < nivel[v]) swap(u, v);
int ans = 0;
for (int i = 19; i >= 0; i--)
if (nivel[u]-(1<<i) >= nivel[v])
ans = max(ans, mx[u][i]), u = tab[u][i];
if (u == v) return ans;
for (int i = 19; i >= 0; i--)
if (tab[u][i] && tab[v][i] && tab[u][i] != tab[v][i])
ans = max({ans, mx[u][i], mx[v][i]}), u = tab[u][i], v = tab[v][i];
return max({ans, mx[u][0], mx[v][0]});
}
} LCA;
void dfs(int u, int c)
{
mark[u] = 1;
for (auto v: grafo[u])
if (!mark[v] && a[v] >= c && b[v] <= c)
dfs(v, c);
}
bool reach(int u, int v, int c)
{
memset(mark, 0, sizeof mark);
dfs(u, c);
return mark[v];
}
void solve_tree(void)
{
bool ok = 1;
for (int i = 1; i <= n; i++)
if (a[i] < b[i])
ok = 0;
LCA.dfs(1, 0);
LCA.build();
for (int u = 1; u <= n; u++)
{
int c = b[u];
bool flag = 0;
for (auto v: quem[c])
if (LCA.get_mn(u, v) >= c && LCA.get_mx(u, v) <= c)
flag = 1;
ok &= flag;
}
printf("%d\n", ok);
}
int main(void)
{
int tc;
scanf("%d", &tc);
while (tc--)
{
scanf("%d %d", &n, &m);
vector<int> bla;
for (int i = 1; i <= n; i++)
{
grafo[i].clear();
quem[i].clear();
}
for (int i = 1; i <= n; i++)
{
scanf("%d", &a[i]);
bla.push_back(a[i]);
quem[a[i]].push_back(i);
}
for (int i = 1; i <= n; i++)
{
scanf("%d", &b[i]);
p[i] = {b[i], i};
}
for (int i = 1; i <= m; i++)
{
int u, v;
scanf("%d %d", &u, &v);
grafo[u].push_back(v);
grafo[v].push_back(u);
}
sort(bla.begin(), bla.end());
bool sub_tree = (m == n-1);
for (int i = 0; i < bla.size(); i++)
if (bla[i] != i+1)
sub_tree = 0;
if (sub_tree)
{
solve_tree();
continue;
}
sort(p+1, p+n+1);
bool ok = 1;
for (int i = n; i >= 1; i--)
{
int c = p[i].ff, u = p[i].ss;
bool flag = 0;
for (auto v: quem[c])
if (reach(v, u, c))
flag = 1;
ok &= flag;
}
for (int i = 1; i <= n; i++)
if (a[i] < b[i])
ok = 0;
if (ok) printf("1\n");
else printf("0\n");
}
}
Compilation message
colors.cpp: In function 'int main()':
colors.cpp:187:21: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
187 | for (int i = 0; i < bla.size(); i++)
| ~~^~~~~~~~~~~~
colors.cpp:146:7: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
146 | scanf("%d", &tc);
| ~~~~~^~~~~~~~~~~
colors.cpp:150:8: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
150 | scanf("%d %d", &n, &m);
| ~~~~~^~~~~~~~~~~~~~~~~
colors.cpp:162:9: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
162 | scanf("%d", &a[i]);
| ~~~~~^~~~~~~~~~~~~
colors.cpp:170:9: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
170 | scanf("%d", &b[i]);
| ~~~~~^~~~~~~~~~~~~
colors.cpp:178:9: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
178 | scanf("%d %d", &u, &v);
| ~~~~~^~~~~~~~~~~~~~~~~
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Incorrect |
1225 ms |
24460 KB |
Output isn't correct |
| 2 |
Halted |
0 ms |
0 KB |
- |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Incorrect |
383 ms |
24268 KB |
Output isn't correct |
| 2 |
Halted |
0 ms |
0 KB |
- |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Incorrect |
1364 ms |
24328 KB |
Output isn't correct |
| 2 |
Halted |
0 ms |
0 KB |
- |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Incorrect |
1364 ms |
24328 KB |
Output isn't correct |
| 2 |
Halted |
0 ms |
0 KB |
- |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Incorrect |
1225 ms |
24460 KB |
Output isn't correct |
| 2 |
Halted |
0 ms |
0 KB |
- |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Incorrect |
138 ms |
23900 KB |
Output isn't correct |
| 2 |
Halted |
0 ms |
0 KB |
- |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Incorrect |
313 ms |
24324 KB |
Output isn't correct |
| 2 |
Halted |
0 ms |
0 KB |
- |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Incorrect |
1225 ms |
24460 KB |
Output isn't correct |
| 2 |
Halted |
0 ms |
0 KB |
- |
