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QOJ
ID | Problem | Submitter | Result | Time | Memory | Language | File size | Submit time | Judge time |
---|---|---|---|---|---|---|---|---|---|
#89620 | #5466. Permutation Compression | maoxuyi | WA | 32ms | 10464kb | C++14 | 3.5kb | 2023-03-20 19:41:55 | 2023-03-20 19:41:58 |
Judging History
answer
#include <bits/stdc++.h>
#define ls ch[x][0]
#define rs ch[x][1]
using namespace std;
int val[200005], maxn[200005], minn[200005], ch[200005][2], fa[200005], rt;
int chk (int x) {
return ch[fa[x]][1] == x;
}
void pushup (int x) {
maxn[x] = minn[x] = val[x];
if (ls) {
maxn[x] = max(maxn[x], maxn[ls]);
minn[x] = min(minn[x], minn[ls]);
}
if (rs) {
maxn[x] = max(maxn[x], maxn[rs]);
minn[x] = min(minn[x], minn[ls]);
}
return;
}
void rotate (int x) {
int y = fa[x], z = fa[y], d = chk(x);
fa[x] = z;
if (z) ch[z][chk(y)] = x;
else rt = x;
if (ch[x][d^1]) fa[ch[x][d^1]] = y;
ch[y][d] = ch[x][d^1];
fa[y] = x;
ch[x][d^1] = y;
pushup(y);
pushup(x);
return;
}
void splay (int x, int top) {
while (fa[x] != top) {
int y = fa[x], z = fa[y];
if (z != top) {
if (chk(x) == chk(y))
rotate(y);
else
rotate(x);
}
rotate(x);
}
if (!top)
rt = x;
return;
}
int build (int l, int r) {
if (l > r)
return 0;
int x = (l + r) >> 1;
ls = build(l, x - 1);
rs = build(x + 1, r);
if (ls)
fa[ls] = x;
if (rs)
fa[rs] = x;
pushup(x);
return x;
}
void remove (int x) {
while (ls || rs) {
if (!rs) {
rotate(ls);
}else {
rotate(rs);
}
}
ch[fa[x]][chk(x)] = 0;
splay(fa[x], 0);
return;
}
int lmax (int k) {
splay(k, 0);
int x = ch[k][0];
if (!x)
return k;
while (x) {
if (rs && maxn[rs] > val[k])
x = rs;
else if (val[x] > val[k])
return x + 1;
else if (ls)
x = ls;
else
return x;
}
return 1;
}
int rmax (int k) {
splay(k, 0);
int x = ch[k][1];
if (!x)
return k;
while (x) {
if (ls && maxn[ls] > val[k])
x = ls;
else if (val[x] > val[k])
return x - 1;
else if (rs)
x = rs;
else
return x;
}
return 0;
}
int T;
int e[200005], p[200005], L[200005];
bool cmp (int x, int y) {
return val[x] > val[y];
}
int tr[200005] = {0};
inline int lowbit (int x) {
return x & (-x);
}
multiset <int> st;
int main () {
//freopen("a.in", "r", stdin);
//freopen("a.ans", "w", stdout);
scanf("%d", &T);
//printf("YES\nYES\nNO\n");
while (T--) {
memset(val, 0, sizeof(val));
memset(p, 0, sizeof(p));
memset(fa, 0, sizeof(fa));
memset(ch, 0, sizeof(ch));
memset(maxn, 0, sizeof(maxn));
memset(L, 0, sizeof(L));
memset(e, 0, sizeof(e));
int n, m, k, fl = 1;
scanf("%d%d%d", &n, &m, &k);
for (int i = 1; i <= n; i++)
scanf("%d", &val[i]);
rt = build(1, n);
fa[rt] = 0;
for (int i = 1, j = 1; i <= m; i++) {
int t;
scanf("%d", &t);
while (val[j] != t && j <= n)
j++;
if (j > n) {
fl = 0;
}
e[j] = 1;
}
m = n - m;
for (int i = 1, t = 0; i <= n; i++) {
if (!e[i])
p[++t] = i;
}
sort(p + 1, p + m + 1, cmp);
memset(tr, 0, sizeof(tr));
for (int i = 1; i <= n; i++) {
for (int j = i; j <= n; j += lowbit(j)) {
tr[j]++;
}
}
st.clear();
for (int i = 1; i <= k; i++) {
scanf("%d", &L[i]);
st.insert(-L[i]);
}
if (!fl) {
puts("NO");
continue;
}
for (int i = 1, j = k; i <= m; i++) {
int t, len = 0;
for (t = rmax(p[i]); t; t -= lowbit(t))
len += tr[t];
for (t = lmax(p[i]) - 1; t; t -= lowbit(t))
len -= tr[t];
for (t = p[i]; t <= m; t += lowbit(t))
tr[t]--;
remove(p[i]);
multiset<int>::iterator it = st.lower_bound(-len);
if (it == st.end()) {
fl = 0;
}else {
st.erase(it);
}
}
puts(fl ? "YES" : "NO");
}
return 0;
}
Details
Tip: Click on the bar to expand more detailed information
Test #1:
score: 100
Accepted
time: 2ms
memory: 10316kb
input:
3 5 2 3 5 1 3 2 4 5 2 1 2 4 5 5 5 1 2 3 4 5 1 2 3 4 5 1 2 3 4 5 3 2 2 3 1 2 3 2 2 3
output:
YES YES NO
result:
ok 3 lines
Test #2:
score: -100
Wrong Answer
time: 32ms
memory: 10464kb
input:
100 2 1 2 2 1 2 1 1 2 1 2 1 2 1 2 2 2 1 1 1 2 1 2 6 1 5 3 4 2 5 6 1 3 5 2 1 1 1 6 1 6 2 1 3 6 4 5 1 4 1 2 2 1 4 3 3 2 2 1 3 2 1 3 2 2 1 1 1 1 1 1 1 1 1 1 1 1 2 1 2 2 1 2 1 2 4 4 3 2 1 3 4 2 1 3 4 4 3 1 1 1 1 1 1 1 6 5 1 6 2 5 4 3 1 6 2 4 3 1 4 1 1 1 1 1 1 6 5 3 3 6 1 4 5 2 3 6 1 4 2 3 3 4 4 3 4 3 4 ...
output:
YES YES YES YES YES YES YES YES YES YES YES YES YES YES YES YES YES YES YES YES YES YES NO YES YES YES YES NO YES YES YES YES YES YES YES YES YES YES NO NO NO YES YES YES NO YES YES YES YES YES YES YES YES YES YES YES YES NO YES YES YES YES YES YES NO YES YES YES YES YES YES YES NO YES YES YES YES Y...
result:
wrong answer 44th lines differ - expected: 'NO', found: 'YES'