#include <bits/stdc++.h>
using namespace std;
struct node {
int mn, mni, cnt;
};
const int MAXN=1e5+5;
vector<int> g[MAXN], ord;
set<int> s;
node seg[MAXN*4];
int indt[MAXN], prof[MAXN];
int n, q;
void dfs(int cur, int p) {
for(auto viz : g[cur]) {
if(viz==p) continue;
prof[viz]=prof[cur]+1;
dfs(viz, cur);
}
ord.push_back(cur);
indt[cur]=ord.size()-1;
}
int query(int sind, int ini, int fim, int qini, int qfim) {
if(qini>fim||qfim<ini) return 0;
if(qini<=ini&&qfim>=fim) return seg[sind].mni;
int m=(ini+fim)/2; int e=sind*2; int d=e+1;
int aa=query(e, ini, m, qini, qfim);
int bb=query(d, m+1, fim, qini, qfim);
if(prof[ord[aa]]<=prof[ord[bb]]) return aa;
else return bb;
}
void update(int sind, int ini, int fim, int qind, int k) {
if(qind<ini||qind>fim) return;
if(ini==fim) {
if(k==1) seg[sind].mn=prof[ord[ini]], seg[sind].cnt=0;
else seg[sind].mn=MAXN, seg[sind].cnt=1;
return;
}
int m=(ini+fim)/2; int e=sind*2; int d=e+1;
update(e, ini, m, qind, k); update(d, m+1, fim, qind, k);
seg[sind].mn=min(seg[e].mn, seg[d].mn);
if(seg[sind].mn==seg[e].mn) seg[sind].mni=seg[e].mni;
else seg[sind].mni=seg[d].mni;
seg[sind].cnt=seg[e].cnt+seg[d].cnt;
}
void build(int sind, int ini, int fim) {
if(ini==fim) {
seg[sind].mn=MAXN;
seg[sind].mni=ini;
seg[sind].cnt=1;
return;
}
int m=(ini+fim)/2; int e=sind*2; int d=e+1;
build(e, ini, m); build(d, m+1, fim);
seg[sind].mn=MAXN; seg[sind].mni=0;
seg[sind].cnt=seg[e].cnt+seg[d].cnt;
}
int main() {
scanf("%d %d", &n, &q);
for(int i=1; i<=n; i++) {
int a; scanf("%d", &a);
if(a==0) continue;
g[a].push_back(i); g[i].push_back(a);
}
for(int i=1; i<=n; i++) sort(g[i].begin(), g[i].end());
ord.push_back(0); prof[1]=1; dfs(1, 1); prof[0]=MAXN;
for(int i=1; i<=n; i++) s.insert(i);
build(1, 1, n);
while(q--) {
int a, val; scanf("%d %d", &a, &val);
if(a==1) {
int ind;
for(int i=1; i<=val; i++) {
ind=*s.begin();
update(1, 1, n, ind, 1);
s.erase(s.begin());
// printf("%d > %d // %d\n", i, ind, ord[query(1, 1, n, 1, n)]);
}
printf("%d\n", ord[ind]);
}
else {
int cara=query(1, 1, n, indt[val], n);
// printf("qu %d %d > %d\n", indt[val], n, ord[cara]);
printf("%d\n", prof[val]-prof[ord[cara]]);
update(1, 1, n, cara, -1);
s.insert(cara);
}
}
}
Compilation message
ballmachine.cpp: In function 'int main()':
ballmachine.cpp:65:7: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
scanf("%d %d", &n, &q);
~~~~~^~~~~~~~~~~~~~~~~
ballmachine.cpp:67:15: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
int a; scanf("%d", &a);
~~~~~^~~~~~~~~~
ballmachine.cpp:79:20: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
int a, val; scanf("%d %d", &a, &val);
~~~~~^~~~~~~~~~~~~~~~~~~
ballmachine.cpp:88:26: warning: 'ind' may be used uninitialized in this function [-Wmaybe-uninitialized]
printf("%d\n", ord[ind]);
^
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Execution timed out |
1067 ms |
2688 KB |
Time limit exceeded |
2 |
Execution timed out |
1075 ms |
10232 KB |
Time limit exceeded |
3 |
Correct |
137 ms |
10488 KB |
Output is correct |
4 |
Execution timed out |
1072 ms |
2688 KB |
Time limit exceeded |
5 |
Execution timed out |
1090 ms |
2688 KB |
Time limit exceeded |
6 |
Incorrect |
5 ms |
2816 KB |
Output isn't correct |
7 |
Execution timed out |
1087 ms |
2816 KB |
Time limit exceeded |
8 |
Incorrect |
7 ms |
2816 KB |
Output isn't correct |
9 |
Execution timed out |
1052 ms |
3200 KB |
Time limit exceeded |
10 |
Execution timed out |
1080 ms |
4608 KB |
Time limit exceeded |
11 |
Execution timed out |
1083 ms |
10232 KB |
Time limit exceeded |
12 |
Correct |
116 ms |
10596 KB |
Output is correct |
13 |
Incorrect |
177 ms |
10300 KB |
Output isn't correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Incorrect |
62 ms |
6228 KB |
Output isn't correct |
2 |
Execution timed out |
1068 ms |
16456 KB |
Time limit exceeded |
3 |
Incorrect |
165 ms |
15340 KB |
Output isn't correct |
4 |
Execution timed out |
1068 ms |
6912 KB |
Time limit exceeded |
5 |
Execution timed out |
1074 ms |
6904 KB |
Time limit exceeded |
6 |
Execution timed out |
1067 ms |
6904 KB |
Time limit exceeded |
7 |
Execution timed out |
1081 ms |
6524 KB |
Time limit exceeded |
8 |
Incorrect |
93 ms |
6084 KB |
Output isn't correct |
9 |
Execution timed out |
1074 ms |
17408 KB |
Time limit exceeded |
10 |
Execution timed out |
1052 ms |
16624 KB |
Time limit exceeded |
11 |
Incorrect |
297 ms |
16800 KB |
Output isn't correct |
12 |
Incorrect |
316 ms |
16752 KB |
Output isn't correct |
13 |
Incorrect |
155 ms |
17220 KB |
Output isn't correct |
14 |
Incorrect |
151 ms |
15344 KB |
Output isn't correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Incorrect |
177 ms |
9884 KB |
Output isn't correct |
2 |
Incorrect |
380 ms |
16880 KB |
Output isn't correct |
3 |
Incorrect |
236 ms |
16116 KB |
Output isn't correct |
4 |
Incorrect |
198 ms |
15216 KB |
Output isn't correct |
5 |
Incorrect |
203 ms |
14744 KB |
Output isn't correct |
6 |
Incorrect |
182 ms |
14960 KB |
Output isn't correct |
7 |
Incorrect |
199 ms |
14328 KB |
Output isn't correct |
8 |
Incorrect |
194 ms |
15984 KB |
Output isn't correct |
9 |
Incorrect |
355 ms |
17724 KB |
Output isn't correct |
10 |
Incorrect |
320 ms |
16752 KB |
Output isn't correct |
11 |
Incorrect |
264 ms |
17236 KB |
Output isn't correct |
12 |
Incorrect |
345 ms |
16884 KB |
Output isn't correct |
13 |
Incorrect |
249 ms |
19200 KB |
Output isn't correct |
14 |
Incorrect |
299 ms |
15128 KB |
Output isn't correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Execution timed out |
1057 ms |
17712 KB |
Time limit exceeded |
2 |
Incorrect |
273 ms |
16508 KB |
Output isn't correct |
3 |
Correct |
201 ms |
18536 KB |
Output is correct |
4 |
Execution timed out |
1080 ms |
17692 KB |
Time limit exceeded |
5 |
Incorrect |
249 ms |
16632 KB |
Output isn't correct |
6 |
Incorrect |
202 ms |
16888 KB |
Output isn't correct |
7 |
Incorrect |
307 ms |
16500 KB |
Output isn't correct |
8 |
Correct |
188 ms |
18640 KB |
Output is correct |
9 |
Incorrect |
174 ms |
15468 KB |
Output isn't correct |