[AwA](https://www.luogu.com.cn/discuss/show/254870)
by quest_2 @ 2020-10-04 12:29:36
```cpp
#include <iostream>
#include <cstdio>
#include <cstdlib>
#include <cstring>
#include <map>
#define _ 0
using namespace std;
string nam,guilty,zc[105],week[8],sb[105];
int n,m,p,said[105],xs,ren[105],ship[105];
bool error;
map<int,string>name;
void biao()//I love map.
{
week[1]="Today is Monday.";
week[2]="Today is Tuesday.";
week[3]="Today is Wednesday.";
week[4]="Today is Thursday.";
week[5]="Today is Friday.";
week[6]="Today is Saturday.";
week[7]="Today is Sunday.";
}
void set(int who,int yx)
{
if(ship[who]&&ship[who]!=yx) error=1;
else ship[who]=yx;
}
int main()
{
int i,j,k,day,zh,jh,dd,ans=0;
bool flag;
cin>>n>>m>>p;
biao();
for (i=1; i<=n; i++)
{
cin>>nam;
name[i]=nam;
}
char ch=getchar();
while(ch==10)ch=getchar();getchar();
for (i=1; i<=p; i++)
{
string ppp;
getline(cin,zc[i]);
zc[i].erase(zc[i].end()-1);
for (k=0; k<zc[i].length(); k++)
if (zc[i][k]!=':') ppp+=zc[i][k];
else break;
for (j=1; j<=n; j++)
if (ppp==name[j])
{
ren[i]=j;
break;
}
for (k=ppp.length()+2; k<zc[i].length(); k++)
sb[i]+=zc[i][k];
if (sb[i]=="I am guilty.") said[i]=1;
else
for (j=1; j<=7; j++)
if (sb[i]==week[j])
{
said[i]=2;
break;
}
if (sb[i]=="I am not guilty.") said[i]=3;
else
for(j=1; j<=n; j++)
if (sb[i]==name[j]+" is guilty.")
{
said[i]=4;
break;
}
else if (sb[i]==name[j]+" is not guilty.")
{
said[i]=5;
break;
}
}
for (day=1; day<=7; day++)
{
for (i=1; i<=n; i++)
{
error=false; jh=0; dd=0;
memset(ship,0,sizeof(ship));
for (j=1; j<=p&&!error; j++)
{
if (said[j]==1)
{
if (i==ren[j]) set(ren[j],1);
else set(ren[j],-1);
}
if (said[j]==2)
{
if (sb[j]==week[day]) set(ren[j],1);
else set(ren[j],-1);
}
if (said[j]==3)
{
if (i!=ren[j]) set(ren[j],1);
else set(ren[j],-1);
}
if (said[j]==4)
{
for (k=1; k<=n; k++)
if(sb[j]==name[k]+" is guilty.")
{
if (k==i) set(ren[j],1);
else set(ren[j],-1);
}
}
if (said[j]==5)
{
for (k=1; k<=n; k++)
if(sb[j]==name[k]+" is not guilty.")
{
if (k!=i) set(ren[j],1);
else set(ren[j],-1);
}
}
}
for (k=1; k<=n; k++)
if (ship[k]==-1) jh++;
else if (ship[k]==0) dd++;
if (!error&&jh<=m&&m<=jh+dd)
{
if(xs&&xs!=i)
{
cout<<"Cannot Determine"<<endl;
return 0;
}
else xs=i;
}
}
}
if (!xs) printf ("Impossible\n");
else cout<<name[xs]<<endl;
return 0;
}
```
by juruolht @ 2021-06-19 17:33:34