//Power Of Ninja Go
#include <bits/stdc++.h>
#ifdef atom
#include "grader.cpp"
#else
#include "horses.h"
#endif
using namespace std;
typedef long long ll; typedef pair<int, int> ii;
#define X first
#define Y second
#define vi vector<int>
#define vii vector< ii >
#define pb push_back
const int maxn = 500005;
const int md = 1e9 + 7;
ll prod[4*maxn];
ll most[4*maxn];
int x[4*maxn];
int y[4*maxn];
int n;
int mul(ll a, ll b)
{
a %= md; b %= md;
return (1LL*a*b)%md;
}
void update(ll *st, int x, int dx, int md, int p = 1, int L = 1, int R = n)
{
if(L> x || R< x) return;
if(L == R && L == x)
{
st[p] = dx;
return;
}
int M = (L+R)/2;
//printf("%d %d %d\n", L, R, M);
//system("pause");
update(st, x, dx, md, 2*p, L, M); update(st, x, dx, md, 2*p+1, M+1, R);
if(md == 1) st[p] = mul(st[2*p], st[2*p+1]);
else st[p] = max(st[2*p], st[2*p+1]);
}
ll ask(ll *st, int i, int j, int md, int p = 1, int L = 1, int R = n)
{
if(i> R || j< L) return 1;
if(i<= L && R<= j) return st[p];
int M = (L+R)/2;
ll x = ask(st, i, j, md, 2*p, L, M);
ll y = ask(st, i, j, md, 2*p+1, M+1, R);
if(md == 1) return mul(x, y);
else return max(x, y);
}
set<int> bst;
int query()
{
vi tmp;
ll product = 1;
for(auto it = bst.rbegin(); it != bst.rend() && product<= 1e9; it++)
{
tmp.pb(*it);
product *= x[*it];
}
reverse(tmp.begin(), tmp.end());
if(tmp.empty()) return ask(most, 1, n, 2);
ll best = ask(most, 1, tmp[0]-1, 2);
ll run = 1;
int q = tmp.size();
for(int i = 1; i< q; i++)
{
//printf("%d", tmp[i]);
run *= x[tmp[i]];
int rend = i+1<q?tmp[i+1]:n+1;
best = max(best, 1LL*run*ask(most, tmp[i], rend-1, 2));
//printf("(%lld)", run*ask(most, tmp[i], rend-1, 2));
}
//best %= md;
return mul(best, ask(prod, 1, tmp[1]-1, 1));
}
int init(int N, int X[], int Y[])
{
n = N;
for(int i = 1; i<= n; i++) x[i] = X[i-1], y[i] = Y[i-1];
for(int i = 1; i<= N; i++) update(prod, i, x[i], 1);
for(int i = 1; i<= N; i++) update(most, i, y[i], 2);
for(int i = 1; i<= N; i++) if(x[i]> 1) bst.insert(i);
return query();
}
int updateX(int pos, int val)
{
pos++;
x[pos] = val;
if(val> 1) bst.insert(pos);
else bst.erase(pos);
update(prod, pos, val, 1);
return query();
}
int updateY(int pos, int val)
{
pos++;
y[pos] = val;
update(most, pos, val, 2);
return query();
}
Compilation message
horses.cpp: In function 'int mul(ll, ll)':
horses.cpp:25:19: warning: conversion to 'int' from 'll {aka long long int}' may alter its value [-Wconversion]
return (1LL*a*b)%md;
^
horses.cpp: In function 'void update(ll*, int, int, int, int, int, int)':
horses.cpp:27:75: warning: declaration of 'md' shadows a global declaration [-Wshadow]
void update(ll *st, int x, int dx, int md, int p = 1, int L = 1, int R = n)
^
horses.cpp:16:11: note: shadowed declaration is here
const int md = 1e9 + 7;
^
horses.cpp:27:75: warning: declaration of 'x' shadows a global declaration [-Wshadow]
void update(ll *st, int x, int dx, int md, int p = 1, int L = 1, int R = n)
^
horses.cpp:19:5: note: shadowed declaration is here
int x[4*maxn];
^
horses.cpp: In function 'll ask(ll*, int, int, int, int, int, int)':
horses.cpp:42:69: warning: declaration of 'md' shadows a global declaration [-Wshadow]
ll ask(ll *st, int i, int j, int md, int p = 1, int L = 1, int R = n)
^
horses.cpp:16:11: note: shadowed declaration is here
const int md = 1e9 + 7;
^
horses.cpp:47:5: warning: declaration of 'x' shadows a global declaration [-Wshadow]
ll x = ask(st, i, j, md, 2*p, L, M);
^
horses.cpp:19:5: note: shadowed declaration is here
int x[4*maxn];
^
horses.cpp:48:5: warning: declaration of 'y' shadows a global declaration [-Wshadow]
ll y = ask(st, i, j, md, 2*p+1, M+1, R);
^
horses.cpp:20:5: note: shadowed declaration is here
int y[4*maxn];
^
horses.cpp: In function 'int query()':
horses.cpp:63:42: warning: conversion to 'int' from 'll {aka long long int}' may alter its value [-Wconversion]
if(tmp.empty()) return ask(most, 1, n, 2);
^
horses.cpp:66:19: warning: conversion to 'int' from 'std::vector<int>::size_type {aka long unsigned int}' may alter its value [-Wconversion]
int q = tmp.size();
^
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Incorrect |
1 ms |
248 KB |
Output isn't correct |
| 2 |
Halted |
0 ms |
0 KB |
- |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Incorrect |
1 ms |
352 KB |
Output isn't correct |
| 2 |
Halted |
0 ms |
0 KB |
- |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Incorrect |
1396 ms |
49332 KB |
Output isn't correct |
| 2 |
Halted |
0 ms |
0 KB |
- |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Incorrect |
2 ms |
49332 KB |
Output isn't correct |
| 2 |
Halted |
0 ms |
0 KB |
- |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Incorrect |
1 ms |
49332 KB |
Output isn't correct |
| 2 |
Halted |
0 ms |
0 KB |
- |
