Submission #3017969
Source Code Expand
#include <bits/stdc++.h>
using namespace std;
typedef signed long long ll;
#undef _P
#define _P(...) (void)printf(__VA_ARGS__)
#define FOR(x,to) for(x=0;x<(to);x++)
#define FORR(x,arr) for(auto& x:arr)
#define ITR(x,c) for(__typeof(c.begin()) x=c.begin();x!=c.end();x++)
#define ALL(a) (a.begin()),(a.end())
#define ZERO(a) memset(a,0,sizeof(a))
#define MINUS(a) memset(a,0xff,sizeof(a))
//-------------------------------------------------------
int N;
int A[101010],B[101010],C[101010],D[101010];
map<pair<int,int>,vector<int>> M;
void solve() {
int i,j,k,l,r,x,y; string s;
cin>>N;
FOR(i,N) {
cin>>A[i]>>B[i];
M[{A[i],B[i]}].push_back(i);
}
FOR(i,N) {
if(i==0) {
if(A[i]) return _P("-1\n");
}
else {
C[i]=1;
if(M.count({A[i]-1,B[i]-1})+M.count({A[i]-1,B[i]})+M.count({A[i]-1,B[i]+1})==0) return _P("-1\n");
}
if(i==1) {
if(B[i]) return _P("-1\n");
}
else {
D[i]=1;
if(M.count({A[i]-1,B[i]-1})+M.count({A[i],B[i]-1})+M.count({A[i]+1,B[i]-1})==0) return _P("-1\n");
}
}
int ret=2*N-2;
FORR(m,M) {
auto a=m.first;
a.first--;
a.second++;
y=0;
FORR(x,m.second) {
if(C[x]&&D[x]&&M.count({A[x]-1,B[x]-1})) {
ret--;
C[x]=D[x]=0;
}
if(C[x]&&M.count(a)&&y<M[a].size()) {
D[M[a][y]]=0;
ret--;
y++;
}
}
}
cout<<ret<<endl;
}
int main(int argc,char** argv){
string s;int i;
if(argc==1) ios::sync_with_stdio(false), cin.tie(0);
FOR(i,argc-1) s+=argv[i+1],s+='\n'; FOR(i,s.size()) ungetc(s[s.size()-1-i],stdin);
cout.tie(0); solve(); return 0;
}
Submission Info
Submission Time |
|
Task |
A - Distance Pairs |
User |
kmjp |
Language |
C++14 (GCC 5.4.1) |
Score |
0 |
Code Size |
1618 Byte |
Status |
WA |
Exec Time |
172 ms |
Memory |
12800 KB |
Judge Result
Set Name |
sample |
All |
Score / Max Score |
0 / 0 |
0 / 1500 |
Status |
|
|
Set Name |
Test Cases |
sample |
sample-01.txt, sample-02.txt |
All |
sample-01.txt, sample-02.txt, 01-01.txt, 01-02.txt, 01-03.txt, 01-04.txt, 01-05.txt, 01-06.txt, 01-07.txt, 01-08.txt, 01-09.txt, 01-10.txt, 01-11.txt, 01-12.txt, 01-13.txt, 01-14.txt, 01-15.txt, 01-16.txt, 01-17.txt, 01-18.txt, 01-19.txt, 01-20.txt, 01-21.txt, 01-22.txt, 01-23.txt, 01-24.txt, 01-25.txt, 01-26.txt, 01-27.txt, 01-28.txt, 01-29.txt, 01-30.txt, 01-31.txt, sample-01.txt, sample-02.txt |
Case Name |
Status |
Exec Time |
Memory |
01-01.txt |
AC |
61 ms |
12032 KB |
01-02.txt |
AC |
17 ms |
1664 KB |
01-03.txt |
AC |
1 ms |
256 KB |
01-04.txt |
AC |
1 ms |
256 KB |
01-05.txt |
AC |
2 ms |
384 KB |
01-06.txt |
AC |
15 ms |
1536 KB |
01-07.txt |
WA |
87 ms |
2816 KB |
01-08.txt |
WA |
90 ms |
2944 KB |
01-09.txt |
WA |
53 ms |
2560 KB |
01-10.txt |
AC |
27 ms |
2432 KB |
01-11.txt |
AC |
70 ms |
2688 KB |
01-12.txt |
AC |
64 ms |
2560 KB |
01-13.txt |
AC |
156 ms |
12800 KB |
01-14.txt |
AC |
163 ms |
12800 KB |
01-15.txt |
AC |
148 ms |
12800 KB |
01-16.txt |
AC |
19 ms |
2296 KB |
01-17.txt |
AC |
19 ms |
2296 KB |
01-18.txt |
AC |
19 ms |
2424 KB |
01-19.txt |
WA |
164 ms |
12800 KB |
01-20.txt |
WA |
172 ms |
10624 KB |
01-21.txt |
WA |
166 ms |
10880 KB |
01-22.txt |
WA |
141 ms |
6784 KB |
01-23.txt |
AC |
55 ms |
2560 KB |
01-24.txt |
AC |
80 ms |
2816 KB |
01-25.txt |
AC |
26 ms |
2048 KB |
01-26.txt |
AC |
27 ms |
2048 KB |
01-27.txt |
AC |
59 ms |
2560 KB |
01-28.txt |
AC |
56 ms |
2560 KB |
01-29.txt |
AC |
1 ms |
256 KB |
01-30.txt |
AC |
1 ms |
256 KB |
01-31.txt |
AC |
1 ms |
256 KB |
sample-01.txt |
AC |
1 ms |
256 KB |
sample-02.txt |
AC |
1 ms |
256 KB |