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QOJ
ID | Problem | Submitter | Result | Time | Memory | Language | File size | Submit time | Judge time |
---|---|---|---|---|---|---|---|---|---|
#378712 | #8566. Can We Still Qualify For Semifinals? | ucup-team3396# | TL | 1ms | 3848kb | C++14 | 3.7kb | 2024-04-06 14:18:03 | 2024-04-06 14:18:05 |
Judging History
answer
#include<bits/stdc++.h>
using namespace std;
int head[20001];int to[20001];
int nxt[20001];int cur[20001];
long long flow[20001];
int dep[10001];
bool vis[10001];
int s,t;
int tot=2;
void add(int s,int t,int w){
nxt[tot]=head[s];flow[tot]=w;
to[tot]=t;head[s]=tot;tot++;
return ;
}
void init(){
for(int i=2;i<=tot;i++)head[i]=to[i]=nxt[i]=cur[i]=flow[i]=0;
tot=2;
return ;
}
bool bfs(){
for(int i=1;i<=t;i++)dep[i]=vis[i]=0,cur[i]=head[i];
queue<int> d;d.push(s);dep[s]=0;bool ok=0;vis[s]=1;
while(!d.empty()){
int g=d.front();d.pop();
if(g==t)ok=1;
for(int i=head[g];i;i=nxt[i]){
if(flow[i]!=0 and !vis[to[i]])dep[to[i]]=dep[g]+1,vis[to[i]]=1,d.push(to[i]);
}
}
return ok;
}
long long dfs(int g,long long pre){
if(g==t)return pre;
long long used=0;
for(int i=cur[g];i;i=nxt[i]){
cur[g]=i;
if(dep[to[i]]==dep[g]+1 and flow[i]!=0){
long long res=dfs(to[i],min(flow[i],pre-used));
used+=res;
flow[i]-=res;
flow[i^1]+=res;
}
if(used==pre)return pre;
}
return used;
}
int solve(){
int ans=0;
while(bfs()){
ans+=dfs(s,INT_MAX);
}
return ans;
}
int num[11];
pair<int,int> w[101];
int ttt=0;
int z;
bool vst[101];
signed main(){
vector<int> o;
//for(int i=1;i<=10;i++)o.push_back(i);
for(int i=1;i<=9;i++){
o.clear();
o.push_back(1);
for(int j=10-i+2;j<=10;j++)o.push_back(j);
for(int j=2;j<=10-i+1;j++)o.push_back(j);
for(int j=0;j<5;j++){
ttt++;
w[ttt]={o[j],o[9-j]};
}
}
int T;cin>>T;
while(T--){
int len;cin>>len;
string S;cin>>S;
S=" "+S;
for(int i=1;i<=10;i++)num[i]=0;
z=S.size()-1;
for(int i=1;i<S.size();i++){
if(S[i]=='1')num[w[i].first]++;
else num[w[i].second]++;
}
for(int i=z+1;i<=45;i++){
if(w[i].first==1 or w[i].second==1)num[1]++;
}
bool ans=0;
for(int i=2;i<=10;i++){
for(int j=i+1;j<=10;j++){
for(int k=j+1;k<=10;k++){
init();
bool flg=0;
for(int p=2;p<=10;p++){
if(p!=i and p!=j and p!=k and num[p]>num[1]){
flg=1;break;
}
}
if(flg)continue;
s=56,t=57;
int ooo=0;
for(int p=z+1;p<=45;p++){
if(w[p].first==1 or w[p].first==i or w[p].first==j or w[p].first==k or w[p].second==1 or w[p].second==i or w[p].second==j or w[p].second==k)continue;
ooo++;
add(s,p,1);add(p,s,0);
}
for(int p=2;p<=10;p++){
if(p==i or p==j or p==k)continue;
add(45+p,t,num[1]-num[p]);
add(t,45+p,0);
}
for(int p=z+1;p<=45;p++){
if(w[p].first==1 or w[p].first==i or w[p].first==j or w[p].first==k or w[p].second==1 or w[p].second==i or w[p].second==j or w[p].second==k)continue;
add(p,45+w[p].first,1);add(45+w[p].first,p,0);
add(p,45+w[p].second,1);add(45+w[p].second,p,0);
}
int qq=solve();
if(qq==ooo){
ans=1;break;
}
}
if(ans)break;
}
if(ans)break;
}
if(ans)cout<<"YES"<<endl;
else cout<<"NO"<<endl;
}
return 0;
}
Details
Tip: Click on the bar to expand more detailed information
Test #1:
score: 100
Accepted
time: 1ms
memory: 3596kb
input:
3 3 111 25 1000010101111111111010100 35 01111011110111101111011110111101111
output:
YES YES NO
result:
ok 3 token(s): yes count is 2, no count is 1
Test #2:
score: 0
Accepted
time: 0ms
memory: 3848kb
input:
10 16 0110000001010100 17 01111000110110101 15 001100010101111 16 0010101010011100 19 0000000100010110100 16 0011101010011100 18 011110010001100000 18 000110101001100011 20 01100010000100100100 15 001000111001101
output:
YES YES YES YES YES YES YES YES YES YES
result:
ok 10 token(s): yes count is 10, no count is 0
Test #3:
score: 0
Accepted
time: 1ms
memory: 3500kb
input:
10 37 0110000001010100011101001011100110001 39 000100111101101001100101101000000000100 35 00111000100111100101011010111100100 33 010000010001110010110001101110001 30 000100010100000010010110101010 31 0000101000011010101001010000000 44 00001000000111101011010110000101100011000100 42 01111011110001001...
output:
NO NO NO NO NO NO NO NO NO NO
result:
ok 10 token(s): yes count is 0, no count is 10
Test #4:
score: -100
Time Limit Exceeded
input:
10 23 01100000010101000111010 38 01111001100011000101011110101001101001 27 010000000001001001110001001 26 01101001110011101101000110 8 00001000 22 0110100110001110110001 9 000100010 24 000000100101101010100100 6 011000 29 01101010100101000000000000100
output:
YES NO NO