Created
November 27, 2016 13:06
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#include <bits/stdc++.h> | |
using namespace std; | |
typedef long long ll; | |
const int MAX_N = 60; | |
int n, k; | |
int X1[60], Y1[60], Z1[60]; | |
int X2[60], Y2[60], Z2[60]; | |
vector<ll> x, y, z; | |
int main() | |
{ | |
cin >> n >> k; | |
for (int i = 0; i < n; i++){ | |
cin >> X1[i] >> Y1[i] >> Z1[i] >> X2[i] >> Y2[i] >> Z2[i]; | |
x.push_back(X1[i]); | |
x.push_back(X2[i]); | |
y.push_back(Y1[i]); | |
y.push_back(Y2[i]); | |
z.push_back(Z1[i]); | |
z.push_back(Z2[i]); | |
} | |
sort(x.begin(), x.end()); | |
sort(y.begin(), y.end()); | |
sort(z.begin(), z.end()); | |
ll ans = 0; | |
for (int X = 0; X < x.size() - 1; X++){ | |
for (int Y = 0; Y < y.size() - 1; Y++){ | |
for (int Z = 0; Z < z.size() - 1; Z++){ | |
int cnt = 0; | |
for (int i = 0; i < n; i++){ | |
if (X1[i] <= x[X] && x[X + 1] <= X2[i] && | |
Y1[i] <= y[Y] && y[Y + 1] <= Y2[i] && | |
Z1[i] <= z[Z] && z[Z + 1] <= Z2[i]) cnt++; | |
} | |
if (cnt >= k){ | |
ans += (x[X + 1] - x[X]) * (y[Y + 1] - y[Y]) * (z[Z + 1] - z[Z]); | |
} | |
} | |
} | |
} | |
cout << ans << endl; | |
} |
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