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QOJ
ID | Problem | Submitter | Result | Time | Memory | Language | File size | Submit time | Judge time |
---|---|---|---|---|---|---|---|---|---|
#94002 | #5255. Greedy Drawers | jaker | WA | 2ms | 3584kb | C++14 | 2.7kb | 2023-04-04 19:39:23 | 2023-04-04 19:39:24 |
Judging History
answer
#include<bits/stdc++.h>
using namespace std;
#define rep(i,j,k) for(int i = j;i <= k;++i)
#define repp(i,j,k) for(int i = j;i >= k;--i)
#define rept(i,x) for(int i = linkk[x];i;i = e[i].n)
#define ll long long
#define pb push_back
#define mp make_pair
#define fr first
#define se second
#define P pair<int,int>
int rd() {
int x; scanf("%d",&x);
return x;
}
const ll INF = 1e17;
int T,N,C;
int n,m,st;
int ST,ED;
int cnt[1050];
bool vivad[1050];
char s1[20],s2[20];
int linkk[1050] , dep[1050] , t;
struct node{int n,v,y;}e[1010000];
// st : 1<<N end : (1<<N)+1
void insert(int x,int y) {
e[++t].n = linkk[x]; e[t].y = y; e[t].v = 1; linkk[x] = t;
e[++t].n = linkk[y]; e[t].y = x; e[t].v = 0; linkk[y] = t;
}
void build() {
rep(i,0,n-2) {
if( ! (cnt[i] & 1) ) insert( ST , i ); // ou
else insert( i , ED );
rep(j,0,N-1)
if( (cnt[( i ^ (1<<j) )]&1) > (cnt[i]&1) ) insert( i , i ^ (1<<j) );
}
}
void reset() {
rep(i,0,n) vivad[i] = false;
t = 1; rep(i,0,n) linkk[i] = 0 , dep[i] = 0;
}
void init() {
N = rd(); C = rd();
n = (1<<N)+1;
ST = 1<<N; ED = n;
reset();
scanf("%s%s",s1+1,s2+1);
st = 0;
rep(i,1,N) if(s1[i] == s2[i]) st += (1<<(i-1));
rep(i,1,C) {
int res = 0;
scanf("%s",s1+1);
rep(i,1,n) if(s1[i] == '=') res += (1<<(i-1));
vivad[res] = true;
}
build();
}
queue<int>q;
bool bfs() {
rep(i,0,n) dep[i] = -1; dep[ST] = 0;
q.push(ST);
while(!q.empty()) {
int x = q.front(); q.pop();
rept(i,x) {
int y = e[i].y;
if( !vivad[y] && dep[y] == -1 && e[i].v > 0 )
dep[y] = dep[x]+1 , q.push(y);
}
}
return dep[ED] != -1;
}
void output() {
rep(x,0,n) {
printf("#%d\n",x);
rept(i,x) printf("*%d %d\n",e[i].y,e[i].v);
printf("\n");
}
}
ll dfs(int x,ll lazy) {
if(x == ED) return lazy;
if(vivad[x]) return 0;
ll nowlazy = 0 , d = 0;
rept(i,x) {
int y = e[i].y;
if( !vivad[y] && dep[y] == dep[x]+1 && e[i].v > 0 )
if( d = dfs( y , min( 1ll*e[i].v , lazy - nowlazy ) ) ) {
e[i].v -= d;
e[i^1].v += d;
nowlazy += d;
}
}
if(nowlazy == 0) dep[x] = -1;
return nowlazy;
}
void work() {
if(vivad[st]) {
printf("Bob\n");
return;
}
ll ans1 = 0 , ans2 = 0;
while(bfs()) {
ll d;
while(d=dfs(ST,INF)) ans1 += d;
}
t = 1; rep(i,0,n) linkk[i] = 0 , dep[i] = 0;
vivad[st] = true;
build();
while(bfs()) {
ll d;
while(d=dfs(ST,INF)) ans2 += d;
}
if(ans1 != ans2) printf("Alice\n");
else printf("Bob\n");
//printf("**%d\n",st);
//printf("#%d %d\n",ans1,ans2);
}
int main() {
freopen("1.in","r",stdin);
rep(i,0,1024) {
int x = i;
while(x>0) cnt[i] += (x&1) , x >>= 1;
}
T = rd();
while(T--) {
init();
work();
}
return 0;
}
Details
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Test #1:
score: 0
Wrong Answer
time: 2ms
memory: 3584kb
input:
150
output:
Bob Bob Bob Bob Bob Bob Bob Bob Bob Bob Bob Bob Bob Bob Bob Bob Bob Bob Bob Bob Bob Bob Bob Bob Bob Bob Bob Bob Bob Bob Bob Bob Bob Bob Bob Bob Bob Bob Bob Bob Bob Bob Bob Bob Bob Bob Bob Bob Bob Bob Bob Bob Bob Bob Bob Bob Bob Bob Bob Bob Bob Bob Bob Bob Bob Bob Bob Bob Bob Bob Bob Bob Bob Bob Bob ...
result:
wrong output format Expected integer, but "Bob" found