#include <bits/stdc++.h>
using namespace std;
#define ll long long
#define pb push_back
#define SZ(x) (int)((x).size())
#define ALL(x) x.begin(),x.end()
#define pii pair<int, int>
#define f first
#define s second
#ifdef BALBIT
#define bug(...) cerr<<"#"<<__LINE__<<": "<<#__VA_ARGS__<<" = ", _do(__VA_ARGS__)
template<typename T> void _do(T &&x) {cerr<<x<<endl;}
template<typename T, typename ...S> void _do(T &&x, S&&...y) {cerr<<x<<", "; _do(y...);}
#define IOS()
#else
#define IOS() ios::sync_with_stdio(0), cin.tie(0)
#define endl '\n'
#define bug(...)
#endif // BALBIT
const int MX = 205;
#define REP(i,n) for (int i = 0; i<n; ++i)
#define RREP(i,n) for (int i = n-1; i>=0; --i)
#define FOR(i,a,b) for (int i = a; i<b; i++)
stack<pii> bb; // big boys
void add(pii x) {
while (!bb.empty() && bb.top().f <= x.f) bb.pop();
bb.push(x);
}
ll count_rectangles(vector<vector<int> > a) {
int n = SZ(a);
int m = SZ(a[0]);
if (m<=2) return 0;
int lb = 0;
ll re = 0;
add ({a[1][0],0});
add({a[1][1],1});
bb.pop();
vector<int> L(m);
for (int i = 0; i<m-1; ++i) {
int x = a[1][i];
L[i] = x > a[1][i+1];
}
for (int i = 1; i<m-1; ++i) {
int x = a[1][i];
bool ok = x < a[0][i] && x < a[2][i];
bool R = ok && x < a[1][i+1];
if (!ok) {
while (!bb.empty()) bb.pop();
bb.push({x,i});
}
else{
while (!bb.empty() && bb.top().f <= a[1][i+1] ) {
if (L[bb.top().s]) re += R;
bb.pop();
}
if (!bb.empty()) if (L[bb.top().s]) re += R;
bb.push({x,i});
}
}
return re;
}
#ifdef BALBIT
signed main(){
IOS();
ll ro = count_rectangles({{1,1,1,1},{1,0,0,1},{1,1,1,1}});
bug(ro);
}
#endif
Compilation message
rect.cpp: In function 'long long int count_rectangles(std::vector<std::vector<int> >)':
rect.cpp:38:9: warning: unused variable 'n' [-Wunused-variable]
int n = SZ(a);
^
rect.cpp:41:9: warning: unused variable 'lb' [-Wunused-variable]
int lb = 0;
^~
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Incorrect |
5 ms |
376 KB |
Output isn't correct |
2 |
Halted |
0 ms |
0 KB |
- |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Incorrect |
5 ms |
376 KB |
Output isn't correct |
2 |
Halted |
0 ms |
0 KB |
- |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Incorrect |
5 ms |
376 KB |
Output isn't correct |
2 |
Halted |
0 ms |
0 KB |
- |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Incorrect |
5 ms |
376 KB |
Output isn't correct |
2 |
Halted |
0 ms |
0 KB |
- |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
5 ms |
376 KB |
Output is correct |
2 |
Correct |
5 ms |
376 KB |
Output is correct |
3 |
Correct |
5 ms |
376 KB |
Output is correct |
4 |
Correct |
5 ms |
256 KB |
Output is correct |
5 |
Correct |
6 ms |
504 KB |
Output is correct |
6 |
Correct |
5 ms |
376 KB |
Output is correct |
7 |
Correct |
5 ms |
380 KB |
Output is correct |
8 |
Correct |
5 ms |
376 KB |
Output is correct |
9 |
Correct |
5 ms |
376 KB |
Output is correct |
10 |
Runtime error |
5 ms |
504 KB |
Execution killed with signal 11 (could be triggered by violating memory limits) |
11 |
Halted |
0 ms |
0 KB |
- |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Incorrect |
4 ms |
256 KB |
Output isn't correct |
2 |
Halted |
0 ms |
0 KB |
- |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Incorrect |
5 ms |
376 KB |
Output isn't correct |
2 |
Halted |
0 ms |
0 KB |
- |