QOJ.ac
QOJ
ID | Problem | Submitter | Result | Time | Memory | Language | File size | Submit time | Judge time |
---|---|---|---|---|---|---|---|---|---|
#90729 | #5250. Combination Locks | Denisov | WA | 3ms | 3468kb | C++23 | 8.3kb | 2023-03-25 01:01:10 | 2023-03-25 01:01:11 |
Judging History
answer
//#pragma GCC optimize("Ofast", "unroll-loops")
//#pragma GCC target("sse", "sse2", "sse3", "ssse3", "sse4")
#ifdef __APPLE__
#include <iostream>
#include <cmath>
#include <algorithm>
#include <stdio.h>
#include <cstdint>
#include <cstring>
#include <string>
#include <cstdlib>
#include <vector>
#include <bitset>
#include <map>
#include <queue>
#include <ctime>
#include <stack>
#include <set>
#include <list>
#include <random>
#include <deque>
#include <functional>
#include <iomanip>
#include <sstream>
#include <fstream>
#include <complex>
#include <numeric>
#include <immintrin.h>
#include <cassert>
#include <array>
#include <tuple>
#include <unordered_map>
#include <unordered_set>
#include <thread>
#else
#include <bits/stdc++.h>
#endif
#define all(a) a.begin(),a.end()
#define len(a) (int)(a.size())
#define mp make_pair
#define pb push_back
#define fir first
#define sec second
#define fi first
#define se second
using namespace std;
typedef pair<int, int> pii;
typedef long long ll;
typedef long double ld;
template<typename T>
bool umin(T &a, T b) {
if (b < a) {
a = b;
return true;
}
return false;
}
template<typename T>
bool umax(T &a, T b) {
if (a < b) {
a = b;
return true;
}
return false;
}
#if __APPLE__
#define D for (bool _FLAG = true; _FLAG; _FLAG = false)
#define LOG(...) print(#__VA_ARGS__" ::", __VA_ARGS__) << endl
template <class ...Ts> auto &print(Ts ...ts) { return ((cerr << ts << " "), ...); }
#else
#define D while (false)
#define LOG(...)
#endif
const int max_n = -1, inf = 1000111222;
const int max_log=10;
template<typename Edge>
class GraphIterator {
public:
class OutgoingEdges {
public:
OutgoingEdges(const GraphIterator *g, int l, int r): g(g), l(l), r(r) {
}
const Edge* begin() const {
if (l == r) {
return 0;
}
return &g->prepared_edges[l];
}
const Edge* end() const {
if (l == r) {
return 0;
}
return &g->prepared_edges[r];
}
private:
int l, r;
const GraphIterator *g;
};
void clear() {
prepared_edges.clear();
edges.clear();
start.clear();
prepared = false;
}
void add_edge(int from, const Edge &e) {
assert(!prepared && from >= 0);
edges.push_back({from, e});
}
void prepare() {
assert(!prepared);
int n = 0;
for (const auto &e : edges) {
n = max(n, e.first);
}
n += 2;
start.resize(n);
for (const auto &e : edges) {
++start[e.first + 1];
}
for (int i = 1; i < n; ++i) {
start[i] += start[i - 1];
}
prepared_edges.resize(edges.size() + 1);
auto counter = start;
for (const auto &e : edges) {
prepared_edges[counter[e.first]++] = e.second;
}
prepared = true;
}
OutgoingEdges operator [] (int from) const {
assert(prepared);
if (from < 0 || from + 1 >= start.size()) {
return {this, 0, 0};
}
return {this, start[from], start[from + 1]};
}
OutgoingEdges out(int from, int shift) const {
assert(prepared);
if (from < 0 || from + 1 >= start.size() || start[from] + shift >= start[from + 1]) {
return {this, 0, 0};
}
return {this, start[from] + shift, start[from + 1]};
}
private:
vector<Edge> prepared_edges;
vector<pair<int, Edge>> edges;
vector<int> start;
bool prepared = false;
};
namespace max_flow {
typedef int CapacityType;
const CapacityType infCapacity = 1000111222;
const int max_v = (1ll<<10)+10;
struct edge {
int to;
CapacityType residual_capacity;
edge(int to, CapacityType residual_capacity): to(to), residual_capacity(residual_capacity) {
}
};
vector<edge> edges;
GraphIterator<int> g;
template<bool bidirectional = false>
void add_edge(int u, int v, CapacityType capacity) {
g.add_edge(u, edges.size());
edges.push_back({v, capacity});
g.add_edge(v, edges.size());
edges.push_back({u, bidirectional ? capacity : 0});
}
int h[max_v], num[max_v];
bool bfs(int s, int t) {
memset(h, -1, sizeof(h[0]) * (t + 1));
h[s] = 0;
queue<int> q;
q.push(s);
while (!q.empty()) {
int v = q.front();
q.pop();
for (int id : g[v]) {
if (edges[id].residual_capacity && h[edges[id].to] == -1) {
h[edges[id].to] = h[v] + 1;
q.push(edges[id].to);
if (edges[id].to == t) {
return true;
}
}
}
}
return h[t] != -1;
}
CapacityType dfs(int v, int t, CapacityType f) {
if (v == t) {
return f;
}
for (int id : g.out(v, num[v])) {
if (edges[id].residual_capacity && h[v] + 1 == h[edges[id].to]) {
CapacityType res = dfs(edges[id].to, t, min(f, edges[id].residual_capacity));
if (res) {
edges[id].residual_capacity -= res;
edges[id ^ 1].residual_capacity += res;
return res;
}
}
++num[v];
}
return 0;
}
long long dinic(int s, int t) {
g.prepare();
long long res = 0;
while (bfs(s, t)) {
memset(num, 0, sizeof(num[0]) * (t + 1));
while (CapacityType f = dfs(s, t, infCapacity)) {
res += f;
}
}
return res;
}
bool reachable[max_v];
void dfs(int v) {
reachable[v] = 1;
for (int id : g[v]) {
if (!reachable[edges[id].to] && edges[id].residual_capacity) {
dfs(edges[id].to);
}
}
}
/**
* call after dinic(s, t)
* res[v] = 1 for vertices in "s" set
* res[v] = 0 for vertices in "t" set
**/
vector<int> get_cut(int s, int t) {
memset(reachable, 0, sizeof(reachable[0]) * (t + 1));
dfs(s);
return {reachable, reachable + t + 1};
}
void clr(int t) {
edges.clear();
g.clear();
}
}
int n,c;
bool used[1ll<<max_log];
bool blocked[1ll<<max_log];
void dfs(int now)
{
used[now]=1;
for (int i=0;i<n;i++){
if (!used[now^(1ll<<i)] && !blocked[now^(1ll<<i)]){
dfs(now^(1ll<<i));
}
}
}
void solve()
{
cin>>n>>c;
string s,t;
cin>>s>>t;
int start=0;
for (int i=0;i<n;i++){
if (s[i]==t[i]){
start+=(1ll<<i);
}
}
memset(blocked,0,sizeof(blocked));
for (int i=0;i<c;i++){
string p;
cin>>p;
int mask=0;
for (int j=0;j<n;j++){
if (p[j]=='='){
mask+=(1ll<<j);
}
}
blocked[mask]=1;
}
memset(used,0,sizeof(used));
dfs(start);
int want=0;
for (int i=0;i<(1ll<<n);i++){
if (i == start) continue;
if (used[i] && __builtin_popcountll(i)%2!=__builtin_popcountll(start)%2){
max_flow::add_edge(1ll<<n,i,1);
want++;
for (int j=0;j<n;j++){
if (used[i^(1ll<<j)]){
max_flow::add_edge(i,i^(1ll<<j),1);
}
}
}
if (used[i] && __builtin_popcountll(i)%2==__builtin_popcountll(start)%2){
max_flow::add_edge(i,(1ll<<n)+1,1);
}
}
bool alice=want==max_flow::dinic(1ll<<n,(1ll<<n)+1);
max_flow::clr((1ll<<n)+1);
cout<<(!alice ? "Alice" : "Bob")<<"\n";
}
int main() {
// freopen("input.txt", "r", stdin);
// freopen("output.txt", "w", stdout);
ios_base::sync_with_stdio(0);
cin.tie(0);
cout.tie(0);
int test;
cin>>test;
while (test--){
solve();
}
}
/*
3
2 2
12
89
=.
==
3 1
204
101
.==
3 2
000
000
...
==.
*/
Details
Tip: Click on the bar to expand more detailed information
Test #1:
score: 100
Accepted
time: 2ms
memory: 3468kb
input:
2 1 0 0 0 1 1 0 0 .
output:
Alice Bob
result:
ok 2 lines
Test #2:
score: 0
Accepted
time: 2ms
memory: 3400kb
input:
8 2 0 00 00 2 1 00 00 .. 2 1 00 00 =. 2 2 00 00 .. =. 2 1 00 00 .= 2 2 00 00 .. .= 2 2 00 00 =. .= 2 3 00 00 .. =. .=
output:
Alice Alice Bob Alice Bob Alice Bob Bob
result:
ok 8 lines
Test #3:
score: 0
Accepted
time: 2ms
memory: 3408kb
input:
20 4 4 4714 5245 ..=. ..== .==. ==.. 4 1 2697 1438 .=.. 4 5 9255 0677 ...= ..== =..= ==.= ==== 4 12 3292 7326 ...= ..=. ..== .=.. .=.= .==. =... =..= =.== ==.. ==.= ==== 4 9 8455 2536 ...= ..== .=.. .=.= .==. .=== =... ==.. ===. 4 12 5755 1517 ...= ..=. ..== .=.. .=.= .=== =..= =.=. =.== ==.. ==.= =...
output:
Alice Bob Alice Bob Bob Alice Bob Bob Alice Alice Bob Alice Alice Bob Bob Bob Bob Bob Bob Bob
result:
ok 20 lines
Test #4:
score: 0
Accepted
time: 2ms
memory: 3412kb
input:
20 5 30 99942 90170 ..... ....= ...== ..=.. ..=.= ..==. ..=== .=... .=..= .=.=. .=.== .==.. .==.= .===. .==== =...= =..=. =..== =.=.. =.=.= =.==. =.=== ==... ==..= ==.=. ==.== ===.. ===.= ====. ===== 5 14 11760 95480 ...=. ...== ..=.. ..=.= .=... .=..= .==== =.... =...= =.=.. =.==. ==... ==.== =====...
output:
Bob Alice Alice Alice Alice Bob Bob Bob Alice Alice Alice Bob Alice Alice Alice Alice Alice Alice Alice Bob
result:
ok 20 lines
Test #5:
score: 0
Accepted
time: 3ms
memory: 3380kb
input:
20 6 62 188256 588825 ...... .....= ....=. ....== ...=.. ...=.= ...==. ...=== ..=... ..=..= ..=.=. ..=.== ..==.. ..==.= ..===. ..==== .=.... .=...= .=..=. .=..== .=.=.. .=.=.= .=.==. .=.=== .==..= .==.=. .==.== .===.. .===.= .===== =..... =....= =...=. =...== =..=.. =..=.= =..==. =..=== =.=... =.=.....
output:
Bob Bob Alice Alice Alice Bob Bob Bob Bob Alice Bob Bob Alice Alice Alice Bob Alice Alice Alice Alice
result:
ok 20 lines
Test #6:
score: -100
Wrong Answer
time: 1ms
memory: 3372kb
input:
20 7 34 1829551 8802318 ....=.= ...=.== ...===. ..=..=. ..=..== ..=.==. .=...== .=..=== .=.=.=. .=.==.. .==.... .==...= .==.=.= .==.=== .===.== =.....= =..=.=. =..=.== =..==.. =..==.= =.=.=.. =.=.=.= =.==..= =.==.=. =.===.. =.===.= =.===== ==..... ==..=== ==.==.= ===.... ===..== ====.== =====.= 7 56...
output:
Alice Bob Bob Alice Bob Alice Alice Bob Alice Bob Alice Alice Alice Bob Bob Alice Bob Bob Alice Bob
result:
wrong answer 6th lines differ - expected: 'Bob', found: 'Alice'