oj.uz

Submission #339411

# Submission time Handle Problem Language Result Execution time Memory
339411 2020-12-25T07:46:45 Z AmineWeslati Pairs (IOI07_pairs) C++14
47 / 100
 4000 ms 2412 KB 
//Never stop trying
/*#pragma GCC target ("avx2")
#pragma GCC optimize ("Ofast")
#pragma GCC optimization ("O3")
#pragma GCC optimization ("unroll-loops")*/
#include "bits/stdc++.h"
using namespace std;
#define boost ios_base::sync_with_stdio(false); cin.tie(0); cout.tie(0)

typedef long long ll;
typedef string str;
typedef double db;
typedef long double ld;
typedef pair<int, int> pi;
#define fi first
#define se second
typedef vector<int> vi;
typedef vector<pi> vpi;
typedef vector<str> vs;
typedef vector<ld> vd;
#define pb push_back
#define eb emplace_back
#define sz(x) (int)x.size()
#define all(x) begin(x), end(x)
#define rall(x) rbegin(x), rend(x)
#define endl "\n"

#define FOR(i,a,b) for (int i = (a); i < (b); ++i)
#define ROF(i,a,b) for (int i = (b)-1; i >= (a); --i)

const int MOD = 1e9 + 7; //998244353
const ll INF = 1e18;
const int MX = 2e5 + 10;
const int nx[4] = {0, 0, 1, -1}, ny[4] = {1, -1, 0, 0}; //right left down up

template<class T> using V = vector<T>;
template<class T> bool ckmin(T& a, const T& b) { return a > b ? a = b, 1 : 0; }
template<class T> bool ckmax(T& a, const T& b) { return a < b ? a = b, 1 : 0; }

ll cdiv(ll a, ll b) { return a / b + ((a ^ b) > 0 && a % b); } // divide a by b rounded up
//constexpr int log2(int x) { return 31 - __builtin_clz(x); } // floor(log2(x))

mt19937 rng(chrono::system_clock::now().time_since_epoch().count());
//mt19937_64 rng(chrono::system_clock::now().time_since_epoch().count());

ll random(ll a, ll b){
    return a + rng() % (b - a + 1);
}

#ifndef LOCAL  
#define cerr if(false) cerr
#endif
#define dbg(x) cerr << #x << " : " << x << endl; 
#define dbgs(x,y) cerr << #x << " : " << x << " / " << #y << " : " << y << endl;
#define dbgv(v) cerr << #v << " : " << "[ "; for(auto it : v) cerr << it << ' '; cerr << ']' << endl;
#define here() cerr << "here" << endl;

void IO() {
#ifdef LOCAL
    freopen("input.txt", "r", stdin);
    freopen("output.txt", "w", stdout);
#endif
}

int B,N,D,M; 

int main() {
    boost; IO();

    cin>>B>>N>>D>>M;
    if(B==1){
    	vi x(N);
    	FOR(i,0,N){
    		cin>>x[i];
    	}
    	sort(all(x));
    	int j=0;
    	ll ans=0;
    	FOR(i,0,N){
    		while(x[i]-x[j]>D) j++;
    		ans+=i-j;
    	}
    	cout << ans << endl;
    }
    else if(B==2){
    	vpi vec;
    	FOR(i,0,N){
    		int x,y; cin>>x>>y;
    		vec.eb(x,y);
    	}
    	ll ans=0;
    	FOR(i,0,N) FOR(j,i+1,N){
    		if(abs(vec[i].fi-vec[j].fi)+abs(vec[i].se-vec[j].se)<=D) ans++;
    	}
    	cout << ans << endl;
    }
    else{
    	vi x(N),y(N),z(N);
    	FOR(i,0,N){
    		cin>>x[i]>>y[i]>>z[i];
    	}
    	ll ans=0;
    	FOR(i,0,N) FOR(j,i+1,N){
    		if(abs(x[i]-x[j])+abs(y[i]-y[j])+abs(z[i]-z[j])<=D) ans++;
    	}
    	cout << ans << endl;
    }

    return 0;
}

/* Careful!!!
    .Array bounds
    .Infinite loops
    .Uninitialized variables / empty containers
    .Multisets are shit

   Some insights:
    .Binary search
    .Graph representation
    .Write brute force code
    .Change your approach
*/

Subtask #1
6.0 / 6.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 364 KB Output is correct
2 Correct 1 ms 364 KB Output is correct

Subtask #2
6.0 / 6.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 364 KB Output is correct

Subtask #3
6.0 / 6.0

# Verdict Execution time Memory Grader output
1 Correct 15 ms 1132 KB Output is correct
2 Correct 14 ms 1132 KB Output is correct

Subtask #4
6.0 / 6.0

# Verdict Execution time Memory Grader output
1 Correct 21 ms 1644 KB Output is correct
2 Correct 20 ms 1644 KB Output is correct

Subtask #5
6.0 / 6.0

# Verdict Execution time Memory Grader output
1 Correct 22 ms 1644 KB Output is correct
2 Correct 20 ms 1644 KB Output is correct
3 Correct 19 ms 1644 KB Output is correct

Subtask #6
7.0 / 7.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 364 KB Output is correct
2 Correct 2 ms 364 KB Output is correct

Subtask #7
0 / 7.0

# Verdict Execution time Memory Grader output
1 Execution timed out 4078 ms 2028 KB Time limit exceeded
2 Halted 0 ms 0 KB -

Subtask #8
0 / 8.0

# Verdict Execution time Memory Grader output
1 Execution timed out 4051 ms 2284 KB Time limit exceeded
2 Halted 0 ms 0 KB -

Subtask #9
0 / 8.0

# Verdict Execution time Memory Grader output
1 Execution timed out 4064 ms 2412 KB Time limit exceeded
2 Halted 0 ms 0 KB -

Subtask #10
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 364 KB Output is correct
2 Correct 3 ms 364 KB Output is correct

Subtask #11
0 / 10.0

# Verdict Execution time Memory Grader output
1 Execution timed out 4027 ms 2284 KB Time limit exceeded
2 Halted 0 ms 0 KB -

Subtask #12
0 / 10.0

# Verdict Execution time Memory Grader output
1 Execution timed out 4064 ms 2412 KB Time limit exceeded
2 Halted 0 ms 0 KB -

Subtask #13
0 / 10.0

# Verdict Execution time Memory Grader output
1 Execution timed out 4074 ms 2412 KB Time limit exceeded
2 Halted 0 ms 0 KB -