//# pragma GCC optimize("Ofast,no-stack-protector")
//# pragma GCC target("sse,sse2,sse3,ssse3,sse4,popcnt,abm,mmx,avx,avx2,tune=native")
# pragma GCC optimize("Ofast")
# pragma GCC optimization ("unroll-loops")
# include "bits/stdc++.h"
std::pair<int,int> DR[] = {{-1,0},{0,1},{1,0},{0,-1},{-1,1},{-1,-1},{1,1},{1,-1}};
# define ll long long
# define clock (clock() * 1000.0 / CLOCKS_PER_SEC)
# define rc(s) return cout << s,0
# define rcg(s) cout << s;exit(0)
# define _ ios_base::sync_with_stdio(false);cin.tie(0);cerr.tie(0);cout.tie(0);
# define db(x) cerr << #x << " = " << x << '\n'
# define pb push_back
# define mp make_pair
# define all(s) s.begin(),s.end()
# define sz(x) (int)((x).size())
//# define int ll
using namespace std;
// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
# define LOCAL
# define sim template < class c
# define ris return * this
# define dor > debug & operator <<
# define eni(x) sim > typename \
enable_if<sizeof dud<c>(0) x 1, debug&>::type operator<<(c i) {
sim > struct rge { c b, e; };
sim > rge<c> range(c i, c j) { return rge<c>{i, j}; }
sim > auto dud(c* x) -> decltype(cerr << *x, 0);
sim > char dud(...);
struct debug {
#ifdef LOCAL
~debug() { cerr << endl; }
eni(!=) cerr << boolalpha << i; ris; }
eni(==) ris << range(begin(i), end(i)); }
sim, class b dor(pair < b, c > d) {
ris << "(" << d.first << ", " << d.second << ")";
}
sim dor(rge<c> d) {
*this << "[";
for (auto it = d.b; it != d.e; ++it)
*this << ", " + 2 * (it == d.b) << *it;
ris << "]";
}
#else
sim dor(const c&) { ris; }
#endif
};
#define show(...) " [" << #__VA_ARGS__ ": " << (__VA_ARGS__) << "] "
int gcd(int a, int b)
{
if(b) return gcd(b,a%b);
return a;
}mt19937 rng(chrono::steady_clock::now().time_since_epoch().count());
// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
int L = 500;
int n,q;
string s;
int f[1 << 19],x[1 << 19],ans[1 << 19],mx[1 << 19];
vector<int>vec[1 << 19];
void upd(int i)
{
for(;i <= n;i += i & (-i)) ans[i] += 1;
}
int qry(int i)
{
int x = 0;
for(;i;i -= (i & (-i))) x += ans[i];
return x;
}
void UPD(int pos,int val)
{
int block = pos / L;
mx[block] = max(mx[block],val);
f[pos] = val;
}
int last(int l,int r)
{
int blockl = l / L;
blockl++;
int ans = 0;
for(int i = l;i <= blockl * L;i++) ans = max(ans,f[i]);
int blockr = r / L;
for(int i = r;i >= blockr * L;i--) ans = max(ans,f[i]);
blockr--;
for(int i = blockl;i <= blockr;i++) ans = max(ans,mx[i]);
return ans;
}
int32_t main(){_
//freopen("input","r",stdin);
cin >> n >> q;
cin >> s;
for(int i = 1;i <= n;i++)
{
if(s[i - 1] == '1') upd(i);
}
for(int i = 1;i <= q;i++)
{
string op;
cin >> op;
if(op[0] == 't')
{
cin >> x[i];
UPD(x[i],i);
upd(x[i]);
}
else
{
int l;
int r;
cin >> l >> r;
r--;
if(qry(r) - qry(l - 1) == r - l + 1)
{
cout << i - last(l,r) << '\n';
}
else cout << "0\n";
}
}
return 0;
}
Compilation message
street_lamps.cpp:4:0: warning: ignoring #pragma GCC optimization [-Wunknown-pragmas]
# pragma GCC optimization ("unroll-loops")
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Incorrect |
14 ms |
12664 KB |
Output isn't correct |
| 2 |
Halted |
0 ms |
0 KB |
- |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Incorrect |
88 ms |
14200 KB |
Output isn't correct |
| 2 |
Halted |
0 ms |
0 KB |
- |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
15 ms |
12664 KB |
Output is correct |
| 2 |
Incorrect |
14 ms |
12664 KB |
Output isn't correct |
| 3 |
Halted |
0 ms |
0 KB |
- |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Incorrect |
15 ms |
12664 KB |
Output isn't correct |
| 2 |
Halted |
0 ms |
0 KB |
- |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Incorrect |
14 ms |
12664 KB |
Output isn't correct |
| 2 |
Halted |
0 ms |
0 KB |
- |
