#pragma GCC optimize("-O3")
#include<bits/stdc++.h>
#include "horses.h"
#include<ext/pb_ds/assoc_container.hpp>
#include<ext/pb_ds/tree_policy.hpp>
#define ll long long
#define ld long double
#define vl vector<ll>
#define vi vector<int>
#define pii pair<int, int>
#define pll pair<ll, ll>
#define all(v) v.begin(), v.end()
#define rall(v) v.rbegin(), v.rend()
#define pb push_back
#define p_b pop_back
#define f first
#define s second
using namespace std;
using namespace __gnu_pbds;
typedef tree<int, null_type, less_equal<int>, rb_tree_tag, tree_order_statistics_node_update> ordered_set;
const int mod = 1e9+7, sz = 5e5+5;
int x[sz], y[sz], n;
pii segtree[4*sz];
set<pii>st;
int m(int x, int y)
{
return ((x % mod) * y) % mod;
}
void build(int v, int l, int r)
{
if(l == r)
{
segtree[v].f = x[l];
segtree[v].s = y[l];
}
else
{
int mid = (l + r) / 2;
build(2*v, l, mid);
build(2*v+1, mid+1, r);
segtree[v].f = m(segtree[2*v].f, segtree[2*v+1].f);
segtree[v].s = max(segtree[2*v].s, segtree[2*v+1].s);
}
}
void update(int v, int l, int r, int type, int pos, int val)
{
if(l == r)
{
if(type == 1)
segtree[v].f = val;
else
segtree[v].s = val;
}
else
{
int mid = (l + r) / 2;
if(pos <= mid)
update(2*v, l, mid, type, pos, val);
else
update(2*v+1, mid+1, r, type, pos, val);
segtree[v].f = m(segtree[2*v].f, segtree[2*v+1].f);
segtree[v].s = max(segtree[2*v].s, segtree[2*v+1].s);
}
}
pii findans(int v, int l, int r, int tl, int tr)
{
if(tl > tr)
return {1, INT_MIN};
if(l == tl && r == tr)
return segtree[v];
else
{
int mid = (l + r) / 2;
pii lans, rans, ans;
lans = findans(2*v, l, mid, tl, min(mid, tr));
rans = findans(2*v+1, mid+1, r, max(mid+1, tl), tr);
ans.f = m(lans.f, rans.f);
ans.s = max(lans.s, rans.s);
return ans;
}
}
int ans()
{
int res = 1, lst = n+1;
for(auto u : st)
{
res = max(res, findans(1, 1, n, -u.f, lst-1).s);
res *= u.s;
if(res >= mod)
return m(res, findans(1, 1, n, 1, -u.f-1).f);
lst = -u.f;
}
return res % mod;
}
int init(int N, int X[], int Y[]) {
for(int i = 1; i <= N; i++)
{
x[i] = X[i-1];
y[i] = Y[i-1];
if(i == 1 || x[i] >= 2)
st.insert({-i, x[i]});
}
build(1, 1, N);
return ans();
}
int updateX(int pos, int val) {
pos++;
update(1, 1, n, 1, pos, val);
if(x[pos] >= 2 || pos == 1)
{
if(st.find({-pos, x[pos]}) != st.end())
st.erase({-pos, x[pos]});
}
x[pos] = val;
if(x[pos] >= 2 || pos == 1)
st.insert({-pos, x[pos]});
return ans();
}
int updateY(int pos, int val) {
update(1, 1, n, 2, pos+1, val);
return ans();
}
Compilation message
horses.cpp: In function 'int m(int, int)':
horses.cpp:25:18: warning: declaration of 'y' shadows a global declaration [-Wshadow]
25 | int m(int x, int y)
| ~~~~^
horses.cpp:22:12: note: shadowed declaration is here
22 | int x[sz], y[sz], n;
| ^
horses.cpp:25:11: warning: declaration of 'x' shadows a global declaration [-Wshadow]
25 | int m(int x, int y)
| ~~~~^
horses.cpp:22:5: note: shadowed declaration is here
22 | int x[sz], y[sz], n;
| ^
| # |
결과 |
실행 시간 |
메모리 |
Grader output |
| 1 |
Incorrect |
1 ms |
4444 KB |
Output isn't correct |
| 2 |
Halted |
0 ms |
0 KB |
- |
| # |
결과 |
실행 시간 |
메모리 |
Grader output |
| 1 |
Incorrect |
1 ms |
4444 KB |
Output isn't correct |
| 2 |
Halted |
0 ms |
0 KB |
- |
| # |
결과 |
실행 시간 |
메모리 |
Grader output |
| 1 |
Runtime error |
358 ms |
524288 KB |
Execution killed with signal 9 |
| 2 |
Halted |
0 ms |
0 KB |
- |
| # |
결과 |
실행 시간 |
메모리 |
Grader output |
| 1 |
Incorrect |
1 ms |
4440 KB |
Output isn't correct |
| 2 |
Halted |
0 ms |
0 KB |
- |
| # |
결과 |
실행 시간 |
메모리 |
Grader output |
| 1 |
Incorrect |
1 ms |
4440 KB |
Output isn't correct |
| 2 |
Halted |
0 ms |
0 KB |
- |
