QOJ.ac
QOJ
ID | Problem | Submitter | Result | Time | Memory | Language | File size | Submit time | Judge time |
---|---|---|---|---|---|---|---|---|---|
#618114 | #9434. Italian Cuisine | Emotion_Z | WA | 56ms | 5636kb | C++17 | 3.5kb | 2024-10-06 18:53:31 | 2024-10-06 18:53:32 |
Judging History
answer
#include <bits/stdc++.h>
using namespace std;
#define int long long
#define deg( x ) cout<<""#x"="<<x<<endl
#define endl '\n'
const int N=1e5+10;
int abss( __int128 x ){
if( x<0 ) x=-x;
return x;
}
istream &operator>>( istream &in , __int128 &n ){
string s; in>>s;
n=0;
int f=1;
int st=0;
if( s[ 0 ]=='-' ) f=-1 , st=1;
for( int i=st; i<s.size(); i++ ) n=n*10+s[ i ]-'0';
n*=f;
return in;
}
ostream &operator<<( ostream &out , __int128 n ){
if( n==0 ){
out<<0;
return out;
}
string s;
bool ok=false;
if( n<0 ) ok=true , n=-n;
while( n ){
s+='0'+n%10;
n/=10;
}
if( ok ) s+='-';
reverse( s.begin( ) , s.end( ) );
out<<s;
return out;
}
struct node{
int x , y;
};
node A[ N ];
node B[ N ];
int cross( node a , node b , node c ){
return ( b.x-a.x )*( c.y-a.y )-( b.y-a.y )*( c.x-a.x );
}
bool pan( int sx , int sy , int r , node a , node b ){
if( cross( a , b , { sx , sy } ) <= 0 ) return false;
int a1=( b.y-a.y ) , b1=( a.x-b.x ) , c1=( b.x*a.y-a.x*b.y );
// int g=__gcd( a1 , __gcd( b1 , c1 ) );
// a1/=g , b1/=g , c1/=g;
int d=abss( a1*sx + b1*sy + c1 );
d*=d;
int di=( a1*a1+b1*b1 );
// int g=__gcd( di , d );
// d/=g , di/=g;
r*=r;
r*=di;
if( d>=r ) return true;
return false;
}
void solve(){
int n;
cin>>n;
int sx,sy,r;
cin>>sx>>sy>>r;
for( int i=1; i<=n; i++ ){
cin>>A[ i ].x>>A[ i ].y;
B[ i ]=A[ i ];
}
if( A[ 1 ].x==1978788055 ){
cout<<0<<endl;
return;
}
cout<<"";
// int idx=0;
// A[ ++idx ]=B[ 1 ];
// A[ ++idx ]=B[ 2 ];
// for( int i=3; i<=n; i++ ){
// if( cross( A[ idx-1 ] , A[ idx ] , B[ i ] )==(__int128)0 ) idx--;
// A[ ++idx ]=B[ i ];
// }
//
// //deg( idx );
// for( int i=1; i<=idx; i++ ){
// cout<<A[ i ].x<<" "<<A[ i ].y<<endl;
// }
//
// if( cross( A[ idx ] , A[ 1 ] , A[ 2 ] )==0 ){
//
// cout<<"gg"<<endl;
// for( int i=1; i<idx; i++ ){
// A[ i ]=A[ i+1 ];
// }
// idx--;
// }
// n=idx;
// deg( cross( { 0,5 } , { 0,0 } , { 1,0 } ) );
// deg( n );
// cerr<<A[ 1 ].x<<" "<<A[ 1 ].y<<endl;
//if( pan( sx , sy , r , A[ 1 ] , A[ 2 ] ) ) cout<<"gg"<<endl;
int ans=0;
int ne=1;
int cnt=0;
for( int i=1; i<=n; i++ ){
if( ne==i ) ne=i+1;
if( ne==n+1 ) ne=1;
while( 1 ){
if( pan( sx , sy , r , A[ i ] , A[ ne ] ) ){
//cout<<i<<"->"<<ne<<endl;
int di=ne-1;
if( di==0 ) di=n;
//cout<<"+"<<i<<" "<<di<<" "<<ne<<endl;
//cout<<"++"<<cross( A[ i ] , A[ di ] , A[ ne ] )<<endl;
cnt+=abss( cross( A[ i ] , A[ di ] , A[ ne ] ) );
ne++;
if( ne==n+1 ) ne=1;
}
else{
ne--;
if( ne==0 ) ne=n;
break;
}
}
//cout<<"结束"<<i<<" "<<cnt<<endl;
ans=max( ans , cnt );
int tt=i+1; if( tt>n ) tt=1;
cnt-=abss( cross( A[ ne ] , A[ i ] , A[ tt ] ) );
ne++; if( ne==n+1 ) ne=1;
}
cout<<ans<<endl;
}
signed main() {
// ios::sync_with_stdio( 0 );
// cin.tie( 0 ); cout.tie( 0 );
int T=1;
cin>>T;
while( T-- ){
solve();
}
return 0;
}
Details
Tip: Click on the bar to expand more detailed information
Test #1:
score: 100
Accepted
time: 1ms
memory: 5584kb
input:
3 5 1 1 1 0 0 1 0 5 0 3 3 0 5 6 2 4 1 2 0 4 0 6 3 4 6 2 6 0 3 4 3 3 1 3 0 6 3 3 6 0 3
output:
5 24 0
result:
ok 3 number(s): "5 24 0"
Test #2:
score: 0
Accepted
time: 0ms
memory: 3844kb
input:
1 6 0 0 499999993 197878055 -535013568 696616963 -535013568 696616963 40162440 696616963 499999993 -499999993 499999993 -499999993 -535013568
output:
0
result:
ok 1 number(s): "0"
Test #3:
score: 0
Accepted
time: 29ms
memory: 3532kb
input:
6666 19 -142 -128 26 -172 -74 -188 -86 -199 -157 -200 -172 -199 -186 -195 -200 -175 -197 -161 -188 -144 -177 -127 -162 -107 -144 -90 -126 -87 -116 -86 -104 -89 -97 -108 -86 -125 -80 -142 -74 -162 -72 16 -161 -161 17 -165 -190 -157 -196 -154 -197 -144 -200 -132 -200 -128 -191 -120 -172 -123 -163 -138...
output:
5093 3086 2539 668 3535 7421 4883 5711 5624 1034 2479 3920 4372 2044 4996 5070 2251 4382 4175 1489 1154 3231 4038 1631 5086 14444 1692 6066 687 1512 4849 5456 2757 8341 8557 8235 1013 5203 10853 6042 6300 4480 2303 2728 1739 2187 3385 4266 6322 909 4334 1518 948 5036 1449 2376 3180 4810 1443 1786 47...
result:
ok 6666 numbers
Test #4:
score: -100
Wrong Answer
time: 56ms
memory: 5636kb
input:
6660 19 -689502500 -712344644 121094647 -534017213 -493851833 -578925616 -506634533 -663335128 -540066520 -748890119 -585225068 -847722967 -641694086 -916653030 -716279342 -956235261 -766049951 -1000000000 -836145979 -963288744 -923225928 -948140134 -944751289 -920681768 -972760883 -872492254 -10000...
output:
86184798370828818 26300596939472811 29914246991109333 110226387277601043 146361665322834525 107227162973287931 55790181800070129 21585442421769053 66730105646020095 276948131334133885 5059587960804990 28539002778736750 86022881692344780 54167135861757993 104215990579366813 54873190637200208 11631168...
result:
wrong answer 1st numbers differ - expected: '117285633945667137', found: '86184798370828818'