#include<bits/stdc++.h>
using namespace std;
#define ll long long
#define pb push_back
ll r,c,n,x,y,pls,mns,ans,cnt,MOD=1e9+7,type,bruh=0;
char op[5];
map<ll,ll> plus_x,minus_x,plus_y,minus_y;
set<ll> s_x,s_y,s;
ll power_2(ll u)
{
ll pow_2[35];
pow_2[0]=2;
for(int i=1;i<=30;i++)
{
pow_2[i]=pow_2[i-1]*pow_2[i-1];
pow_2[i]%=MOD;
}
vector<ll> v;
while(1)
{
if(u<=1)
{
v.pb(u);
break;
}
v.pb(u%2);
u/=2;
}
ll afk=1;
for(int i=0;i<v.size();i++)
{
if(v[i]==1)
{
afk*=pow_2[i];
afk%=MOD;
}
}
return afk;
}
int main()
{
scanf("%lld%lld%lld",&r,&c,&n);
for(int i=1;i<=n;i++)
{
scanf("%s%lld%lld",op,&x,&y);
s_x.insert(x);
s_y.insert(y);
if(op[0]=='+')
{
plus_x[x]|=(1<<(y%2));
plus_y[y]|=(1<<(x%2));
}else
{
minus_x[x]|=(1<<(y%2));
minus_y[y]|=(1<<(x%2));
}
}
ans=0;
cnt=1;
for(auto it=s_x.begin();it!=s_x.end();it++)
{
pls=plus_x[(*it)],mns=minus_x[(*it)];
if(pls==0&&mns==0)
{
cnt*=2;
cnt%=MOD;
}else if(pls==mns)
{
cnt=0;
bruh^=1;
break;
}else if(pls!=3&&mns!=3)
{
cnt*=1;
cnt%=MOD;
}else
{
cnt=0;
bruh^=1;
break;
}
}
cnt*=power_2(r-s_x.size());
cnt%=MOD;
ans+=cnt;
ans%=MOD;
cnt=1;
for(auto it=s_y.begin();it!=s_y.end();it++)
{
pls=plus_y[(*it)],mns=minus_y[(*it)];
if(pls==0&&mns==0)
{
cnt*=2;
cnt%=MOD;
}else if(pls==mns)
{
cnt=0;
bruh^=2;
break;
}else if(pls!=3&&mns!=3)
{
cnt*=1;
cnt%=MOD;
if(pls==2||mns==1)
{
type=0;
}else
{
type=1;
}
s.insert(((*it)+type)%2);
}else
{
cnt=0;
bruh^=2;
break;
}
}
cnt*=power_2(c-s_y.size());
cnt%=MOD;
ans+=cnt;
ans%=MOD;
if(n==0)
{
ans-=2;
ans+=MOD;
ans%=MOD;
}else if(bruh==3)
{
ans=0;
}else
{
if(s.size()==1)
{
ans-=1;
ans+=MOD;
ans%=MOD;
}
}
printf("%lld\n",ans);
}
Compilation message
plusminus.cpp: In function 'long long int power_2(long long int)':
plusminus.cpp:30:18: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<long long int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
30 | for(int i=0;i<v.size();i++)
| ~^~~~~~~~~
plusminus.cpp: In function 'int main()':
plusminus.cpp:42:10: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
42 | scanf("%lld%lld%lld",&r,&c,&n);
| ~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~
plusminus.cpp:45:14: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
45 | scanf("%s%lld%lld",op,&x,&y);
| ~~~~~^~~~~~~~~~~~~~~~~~~~~~~
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
1 ms |
296 KB |
Output is correct |
| 2 |
Correct |
1 ms |
304 KB |
Output is correct |
| 3 |
Correct |
1 ms |
296 KB |
Output is correct |
| 4 |
Incorrect |
1 ms |
212 KB |
Output isn't correct |
| 5 |
Halted |
0 ms |
0 KB |
- |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
1 ms |
296 KB |
Output is correct |
| 2 |
Correct |
1 ms |
304 KB |
Output is correct |
| 3 |
Correct |
1 ms |
296 KB |
Output is correct |
| 4 |
Incorrect |
1 ms |
212 KB |
Output isn't correct |
| 5 |
Halted |
0 ms |
0 KB |
- |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
1 ms |
296 KB |
Output is correct |
| 2 |
Correct |
1 ms |
304 KB |
Output is correct |
| 3 |
Correct |
1 ms |
296 KB |
Output is correct |
| 4 |
Incorrect |
1 ms |
212 KB |
Output isn't correct |
| 5 |
Halted |
0 ms |
0 KB |
- |
