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QOJ
ID | Problem | Submitter | Result | Time | Memory | Language | File size | Submit time | Judge time |
---|---|---|---|---|---|---|---|---|---|
#89262 | #5250. Combination Locks | jeffqi | WA | 2ms | 3616kb | C++14 | 2.3kb | 2023-03-19 14:09:34 | 2023-03-19 14:09:36 |
Judging History
answer
#include<bits/stdc++.h>
#define rep(i,a,b) for (int i = (a); i <= (b); ++i)
#define drep(i,a,b) for (int i = (a); i >= (b); --i)
#define grep(i,u) for (int i = head[u],v = e[i].v; i; v = e[i = e[i].nxt].v)
#define LL long long
#define pii pair<int,int>
#define pll pair<LL,LL>
#define fi first
#define se second
#define eb emplace_back
#define mp make_pair
using namespace std;
LL read() {
LL x = 0,y = 1; char ch = getchar(); while (!isdigit(ch)) {if (ch == '-') y = -y; ch = getchar();}
while (isdigit(ch)) {x = x*10+ch-'0'; ch = getchar();} return x*y;
}
namespace qiqi {
const int N = 10,M = 5e5,INF = 0x3f3f3f3f;
int n,Q,m,s,t,sp,ecnt,head[M],vis[M],c[M],dep[M],cur[M];
char s0[N],s1[N]; struct Edge {int v,f,nxt;} e[N*M];
void add(int u,int v,int f) {e[++ecnt] = (Edge){v,f,head[u]}; head[u] = ecnt;}
void fadd(int u,int v,int f) {add(u,v,f); add(v,u,0);}
bool bfs(int s,int t) {
rep(i,0,t) {cur[i] = head[i]; dep[i] = 0;}
queue<int> q; dep[s] = 1; q.push(s);
while (!q.empty()) {
int u = q.front(); q.pop();
grep(i,u) if (!dep[v] && e[i].f) {
dep[v] = dep[u]+1; q.push(v);
}
}
return dep[t] != 0;
}
int dfs(int u,int t,int f) {
if (!f || u == t) return f; int res = 0;
for (int &i = cur[u],v = e[i].v; i; v = e[i = e[i].nxt].v) {
int k; if (dep[v] == dep[u]+1 && (k = dfs(v,t,min(f,e[i].f)))) {
f -= k; res += k; e[i].f -= k; e[i^1].f += k; if (!f) break;
}
}
return res;
}
int Dinic(int s,int t) {int res = 0; while (bfs(s,t)) res += dfs(s,t,INF); return res;}
void main() {
n = read(); Q = read();
m = (1<<n)-1; sp = 0; ecnt = 1;
rep(i,0,m) {
head[i] = vis[i] = 0;
c[i] = c[i>>1]^(i&1);
}
scanf("%s%s",s0,s1); rep(i,0,n-1) {
sp |= (s0[i] == s1[i]) << i;
}
while (Q--) {
int x = 0; scanf("%s",s0);
rep(i,0,n-1) x |= s0[i] == '=';
vis[x] = 1;
}
s = m+1; t = s+1;
rep(i,s,t) head[i] = 0;
rep(i,0,m) if (!vis[i]) {
if (c[i] == c[sp]) {
if (i != sp) fadd(s,i,1);
rep(j,0,n-1) {
int x = i^(1<<j);
if (!vis[x]) fadd(i,x,1);
}
}
else {
fadd(i,t,1);
}
}
Dinic(s,t); fadd(s,sp,1);
puts(Dinic(s,t) ? "Bob" : "Alice");
}
}
int main() {
int T = read(); while (T--) qiqi::main(); return 0;
}
Details
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Test #1:
score: 0
Wrong Answer
time: 2ms
memory: 3616kb
input:
2 1 0 0 0 1 1 0 0 .
output:
Bob Alice
result:
wrong answer 1st lines differ - expected: 'Alice', found: 'Bob'