# |
Submission time |
Handle |
Problem |
Language |
Result |
Execution time |
Memory |
29164 |
2017-07-18T12:55:31 Z |
Nirjhor |
Saveit (IOI10_saveit) |
C++14 |
|
423 ms |
11896 KB |
#include <bits/stdc++.h>
#include "grader.h"
#include "encoder.h"
using namespace std;
const int H = 40;
const int N = 1010;
static vector <int> g[N];
static vector <int> t[N];
static int n, h, d[H][N];
static int p[N], a[H * N];
static int par[N];
void send (int x, int bit) {
for (int i = 0; i < bit; ++i) {
encode_bit(x & 1);
x >>= 1;
}
}
void go (int u, int from) {
p[u] = from;
for (int it = 0; it < int(g[u].size()); ++it) {
int v = g[u][it];
if (p[v] != -1) continue;
go(v, u);
}
}
void dfs (int u, int from = -123) {
par[u] = from;
for (int it = 0; it < int(t[u].size()); ++it) {
int v = t[u][it];
if (par[v] != -1) continue;
dfs(v, u);
}
}
void bfs (int root) {
queue <int> q;
d[root][root] = 0;
q.push(root);
while (not q.empty()) {
int u = q.front();
q.pop();
for (int it = 0; it < int(g[u].size()); ++it) {
int v = g[u][it];
if (d[root][v] != -1) continue;
d[root][v] = d[root][u] + 1;
q.push(v);
}
}
}
void encode (int _n, int _h, int _p, int a[], int b[]) {
n = _n, h = _h;
for (int i = 0; i < _p; ++i) {
g[a[i]].push_back(b[i]);
g[b[i]].push_back(a[i]);
}
memset(p, -1, sizeof p);
memset(d, -1, sizeof d);
go(0, 0);
for (int i = 1; i < n; ++i) {
send(p[i], 10);
t[i].push_back(p[i]);
t[p[i]].push_back(i);
}
int ptr = 0;
for (int i = 0; i < h; ++i) {
memset(par, -1, sizeof par);
bfs(i), dfs(i);
for (int j = 0; j < n; ++j) {
if (i == j) continue;
int diff = d[i][j] - d[i][par[j]];
assert(abs(diff) <= 1);
a[ptr++] = diff + 1;
}
}
if (ptr % 3) ptr += 3, ptr -= (ptr % 3);
for (int i = 0; i < ptr; i += 3) {
int x = 0;
for (int j = i; j < i + 3; ++j) {
x *= 3, x += a[j];
}
send(x, 5);
}
}
#include <bits/stdc++.h>
#include "grader.h"
#include "decoder.h"
using namespace std;
const int H = 40;
const int N = 1010;
static vector <int> g[N];
static int n, h, p[N];
static int a[H * N], b[H][N];
int receive (int bit) {
int x = 0;
for (int i = 0; i < bit; ++i) {
if (decode_bit()) {
x |= 1 << i;
}
}
return x;
}
void travel (int u, int from = -123) {
p[u] = from;
for (int it = 0; it < int(g[u].size()); ++it) {
int v = g[u][it];
if (v == from) continue;
travel(v, u);
}
}
int find (int u, int v) {
if (u == v) return 0;
int ret = find(u, p[v]);
ret += b[u][v];
return ret;
}
void decode (int _n, int _h) {
n = _n, h = _h;
for (int i = 1; i < n; ++i) {
int j = receive(10);
g[j].push_back(i);
g[i].push_back(j);
}
int ptr = h * n - h;
if (ptr % 3) ptr += 3, ptr -= (ptr % 3);
for (int i = 0; i < ptr; i += 3) {
int x = receive(5);
for (int j = i + 2; j >= i; --j) {
a[j] = x % 3, x /= 3;
}
}
ptr = 0;
for (int i = 0; i < h; ++i) {
for (int j = 0; j < n; ++j) {
if (i == j) continue;
b[i][j] = a[ptr++] - 1;
}
}
for (int i = 0; i < h; ++i) {
memset(p, -1, sizeof p);
travel(i);
for (int j = 0; j < n; ++j) {
hops(i, j, find(i, j));
}
}
}
Compilation message
encoder.cpp:13:18: warning: 'a' defined but not used [-Wunused-variable]
static int p[N], a[H * N];
^
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
423 ms |
11896 KB |
Output is correct - 69930 call(s) of encode_bit() |
2 |
Correct |
7 ms |
4796 KB |
Output is correct - 60 call(s) of encode_bit() |
3 |
Correct |
71 ms |
6200 KB |
Output is correct - 62930 call(s) of encode_bit() |
4 |
Correct |
7 ms |
4872 KB |
Output is correct - 75 call(s) of encode_bit() |
5 |
Correct |
94 ms |
6280 KB |
Output is correct - 62930 call(s) of encode_bit() |
6 |
Correct |
99 ms |
6348 KB |
Output is correct - 69930 call(s) of encode_bit() |
7 |
Correct |
144 ms |
6572 KB |
Output is correct - 69930 call(s) of encode_bit() |
8 |
Correct |
73 ms |
6188 KB |
Output is correct - 67200 call(s) of encode_bit() |
9 |
Correct |
55 ms |
6060 KB |
Output is correct - 69930 call(s) of encode_bit() |
10 |
Correct |
50 ms |
6148 KB |
Output is correct - 69930 call(s) of encode_bit() |
11 |
Correct |
53 ms |
6216 KB |
Output is correct - 69930 call(s) of encode_bit() |
12 |
Correct |
81 ms |
6268 KB |
Output is correct - 69930 call(s) of encode_bit() |
13 |
Correct |
139 ms |
6764 KB |
Output is correct - 69930 call(s) of encode_bit() |
14 |
Correct |
87 ms |
6204 KB |
Output is correct - 69930 call(s) of encode_bit() |
15 |
Correct |
89 ms |
6232 KB |
Output is correct - 69930 call(s) of encode_bit() |
16 |
Correct |
174 ms |
6724 KB |
Output is correct - 69930 call(s) of encode_bit() |
17 |
Correct |
117 ms |
6504 KB |
Output is correct - 69930 call(s) of encode_bit() |
18 |
Correct |
118 ms |
6916 KB |
Output is correct - 69930 call(s) of encode_bit() |
19 |
Correct |
101 ms |
6576 KB |
Output is correct - 69930 call(s) of encode_bit() |
20 |
Correct |
153 ms |
7152 KB |
Output is correct - 69930 call(s) of encode_bit() |
21 |
Correct |
137 ms |
7236 KB |
Output is correct - 69930 call(s) of encode_bit() |
22 |
Correct |
106 ms |
6820 KB |
Output is correct - 69930 call(s) of encode_bit() |
23 |
Correct |
151 ms |
7420 KB |
Output is correct - 69930 call(s) of encode_bit() |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
423 ms |
11896 KB |
Output is correct - 69930 call(s) of encode_bit() |
2 |
Correct |
7 ms |
4796 KB |
Output is correct - 60 call(s) of encode_bit() |
3 |
Correct |
71 ms |
6200 KB |
Output is correct - 62930 call(s) of encode_bit() |
4 |
Correct |
7 ms |
4872 KB |
Output is correct - 75 call(s) of encode_bit() |
5 |
Correct |
94 ms |
6280 KB |
Output is correct - 62930 call(s) of encode_bit() |
6 |
Correct |
99 ms |
6348 KB |
Output is correct - 69930 call(s) of encode_bit() |
7 |
Correct |
144 ms |
6572 KB |
Output is correct - 69930 call(s) of encode_bit() |
8 |
Correct |
73 ms |
6188 KB |
Output is correct - 67200 call(s) of encode_bit() |
9 |
Correct |
55 ms |
6060 KB |
Output is correct - 69930 call(s) of encode_bit() |
10 |
Correct |
50 ms |
6148 KB |
Output is correct - 69930 call(s) of encode_bit() |
11 |
Correct |
53 ms |
6216 KB |
Output is correct - 69930 call(s) of encode_bit() |
12 |
Correct |
81 ms |
6268 KB |
Output is correct - 69930 call(s) of encode_bit() |
13 |
Correct |
139 ms |
6764 KB |
Output is correct - 69930 call(s) of encode_bit() |
14 |
Correct |
87 ms |
6204 KB |
Output is correct - 69930 call(s) of encode_bit() |
15 |
Correct |
89 ms |
6232 KB |
Output is correct - 69930 call(s) of encode_bit() |
16 |
Correct |
174 ms |
6724 KB |
Output is correct - 69930 call(s) of encode_bit() |
17 |
Correct |
117 ms |
6504 KB |
Output is correct - 69930 call(s) of encode_bit() |
18 |
Correct |
118 ms |
6916 KB |
Output is correct - 69930 call(s) of encode_bit() |
19 |
Correct |
101 ms |
6576 KB |
Output is correct - 69930 call(s) of encode_bit() |
20 |
Correct |
153 ms |
7152 KB |
Output is correct - 69930 call(s) of encode_bit() |
21 |
Correct |
137 ms |
7236 KB |
Output is correct - 69930 call(s) of encode_bit() |
22 |
Correct |
106 ms |
6820 KB |
Output is correct - 69930 call(s) of encode_bit() |
23 |
Correct |
151 ms |
7420 KB |
Output is correct - 69930 call(s) of encode_bit() |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
423 ms |
11896 KB |
Output is correct - 69930 call(s) of encode_bit() |
2 |
Correct |
7 ms |
4796 KB |
Output is correct - 60 call(s) of encode_bit() |
3 |
Correct |
71 ms |
6200 KB |
Output is correct - 62930 call(s) of encode_bit() |
4 |
Correct |
7 ms |
4872 KB |
Output is correct - 75 call(s) of encode_bit() |
5 |
Correct |
94 ms |
6280 KB |
Output is correct - 62930 call(s) of encode_bit() |
6 |
Correct |
99 ms |
6348 KB |
Output is correct - 69930 call(s) of encode_bit() |
7 |
Correct |
144 ms |
6572 KB |
Output is correct - 69930 call(s) of encode_bit() |
8 |
Correct |
73 ms |
6188 KB |
Output is correct - 67200 call(s) of encode_bit() |
9 |
Correct |
55 ms |
6060 KB |
Output is correct - 69930 call(s) of encode_bit() |
10 |
Correct |
50 ms |
6148 KB |
Output is correct - 69930 call(s) of encode_bit() |
11 |
Correct |
53 ms |
6216 KB |
Output is correct - 69930 call(s) of encode_bit() |
12 |
Correct |
81 ms |
6268 KB |
Output is correct - 69930 call(s) of encode_bit() |
13 |
Correct |
139 ms |
6764 KB |
Output is correct - 69930 call(s) of encode_bit() |
14 |
Correct |
87 ms |
6204 KB |
Output is correct - 69930 call(s) of encode_bit() |
15 |
Correct |
89 ms |
6232 KB |
Output is correct - 69930 call(s) of encode_bit() |
16 |
Correct |
174 ms |
6724 KB |
Output is correct - 69930 call(s) of encode_bit() |
17 |
Correct |
117 ms |
6504 KB |
Output is correct - 69930 call(s) of encode_bit() |
18 |
Correct |
118 ms |
6916 KB |
Output is correct - 69930 call(s) of encode_bit() |
19 |
Correct |
101 ms |
6576 KB |
Output is correct - 69930 call(s) of encode_bit() |
20 |
Correct |
153 ms |
7152 KB |
Output is correct - 69930 call(s) of encode_bit() |
21 |
Correct |
137 ms |
7236 KB |
Output is correct - 69930 call(s) of encode_bit() |
22 |
Correct |
106 ms |
6820 KB |
Output is correct - 69930 call(s) of encode_bit() |
23 |
Correct |
151 ms |
7420 KB |
Output is correct - 69930 call(s) of encode_bit() |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
423 ms |
11896 KB |
Output is correct - 69930 call(s) of encode_bit() |
2 |
Correct |
7 ms |
4796 KB |
Output is correct - 60 call(s) of encode_bit() |
3 |
Correct |
71 ms |
6200 KB |
Output is correct - 62930 call(s) of encode_bit() |
4 |
Correct |
7 ms |
4872 KB |
Output is correct - 75 call(s) of encode_bit() |
5 |
Correct |
94 ms |
6280 KB |
Output is correct - 62930 call(s) of encode_bit() |
6 |
Correct |
99 ms |
6348 KB |
Output is correct - 69930 call(s) of encode_bit() |
7 |
Correct |
144 ms |
6572 KB |
Output is correct - 69930 call(s) of encode_bit() |
8 |
Correct |
73 ms |
6188 KB |
Output is correct - 67200 call(s) of encode_bit() |
9 |
Correct |
55 ms |
6060 KB |
Output is correct - 69930 call(s) of encode_bit() |
10 |
Correct |
50 ms |
6148 KB |
Output is correct - 69930 call(s) of encode_bit() |
11 |
Correct |
53 ms |
6216 KB |
Output is correct - 69930 call(s) of encode_bit() |
12 |
Correct |
81 ms |
6268 KB |
Output is correct - 69930 call(s) of encode_bit() |
13 |
Correct |
139 ms |
6764 KB |
Output is correct - 69930 call(s) of encode_bit() |
14 |
Correct |
87 ms |
6204 KB |
Output is correct - 69930 call(s) of encode_bit() |
15 |
Correct |
89 ms |
6232 KB |
Output is correct - 69930 call(s) of encode_bit() |
16 |
Correct |
174 ms |
6724 KB |
Output is correct - 69930 call(s) of encode_bit() |
17 |
Correct |
117 ms |
6504 KB |
Output is correct - 69930 call(s) of encode_bit() |
18 |
Correct |
118 ms |
6916 KB |
Output is correct - 69930 call(s) of encode_bit() |
19 |
Correct |
101 ms |
6576 KB |
Output is correct - 69930 call(s) of encode_bit() |
20 |
Correct |
153 ms |
7152 KB |
Output is correct - 69930 call(s) of encode_bit() |
21 |
Correct |
137 ms |
7236 KB |
Output is correct - 69930 call(s) of encode_bit() |
22 |
Correct |
106 ms |
6820 KB |
Output is correct - 69930 call(s) of encode_bit() |
23 |
Correct |
151 ms |
7420 KB |
Output is correct - 69930 call(s) of encode_bit() |