oj.uz

Submission #889964

# Submission time Handle Problem Language Result Execution time Memory
889964 2023-12-20T10:23:29 Z vjudge1 Hedgehog Daniyar and Algorithms (IZhO19_sortbooks) C++17
34 / 100
 3000 ms 18604 KB 
#include <bits/stdc++.h>
using namespace std;
#include <ext/pb_ds/assoc_container.hpp>
#include <ext/pb_ds/tree_policy.hpp>
using namespace __gnu_pbds;
  
#define ordered_set tree<int, null_type,less<int>, rb_tree_tag,tree_order_statistics_node_update>
 
 #pragma GCC optimize("Ofast,unroll-loops,fast-math")
 #pragma GCC target("popcnt")


typedef long long ll;
typedef unsigned long long ull;
typedef long double ld;
typedef pair<ll,ll> pll;
 
#define sz size()
#define ff first
#define ss second
#define all(a) a.begin(),a.end()
#define pb push_back

const int mod = ll(1e9)+7; //(b + (a%b)) % b (to mod -1%(10^9+7) correctly in c++ its -1 but its suppose to be 10^9+6
const ll MOD = 998244353;  // (a%mod)*(binpow(b,mod-2,mod) = (a/b)%mod
const int N = ll(2e5)+10;
const long long inf = 2e18;
const long double eps = 1e-15L;
 
ll lcm(ll a, ll b) { return (a / __gcd(a,b))*b; }

ll binpow(ll a, ll b, ll m) { ll res=1; a %= m; while(b>0){ if(b&1)res=(res * a) % m; a=(a * a) % m; b/=2; } return res%m;}
 
void Freopen(string Key){ freopen((Key+".in").c_str(), "r", stdin); freopen((Key+".out").c_str(), "w", stdout); }

const int B = 250;

int n, m, w[N], sta[20][N], LOG[N], mxsuf[N];
//int ql[N], qr[N], qk[N]
int get(int l, int r) {
	if(l > r) return 0;
	int j = LOG[r - l + 1];
	return max(sta[j][l], sta[j][r-(1<<j)+1]);
}

void Baizho() {	
	for(int i = 2; i < N; i ++) LOG[i] = LOG[i / 2] + 1;
	cin>>n>>m;
	for(int i = 1; i <= n; i ++) {
		cin>>w[i];
		sta[0][i] = w[i];
	}
	for(int j = 1; j <= 19; j ++) {
		for(int i = 1; i+(1<<j)-1 <= n; i ++) {
			sta[j][i] = max(sta[j-1][i], sta[j-1][i+(1<<j-1)]);
		}
	}
	for(int i = 1; i <= n; i ++) {
		if(i % B == 1) {
			int r = min(n, i + B - 1), mx = 0, ans = 0;
			for(int j = i; j <= r; j ++) {
				if(mx > w[j]) mxsuf[j] = mx + w[j];
				mx = max(mx, w[j]);
			}
			for(int j = r - 1; j >= i; j --) mxsuf[j] = max(mxsuf[j], mxsuf[j + 1]);
		}
	}
//	for(int i = 1; i <= n; i ++) cout<<mxsuf[i]<<" ";
//	cout<<"\n";
	while(m --) {
		int l, r, k; cin>>l>>r>>k;
		int bl = (l - 1) / B, br = (r - 1) / B;
		if(bl == br) {
			int mx = 0, ans = 0;
			for(int i = l; i <= r; i ++) {
				if(mx > w[i]) ans = max(ans, w[i] + mx);
				mx = max(mx, w[i]);
			}
			cout<<(ans <= k)<<"\n";
			continue;
		}
		int ans = 0, mx = 0;
		for(int i = l; i <= bl * B + B; i ++) {
			if(mx > w[i]) ans = max(ans, w[i] + mx);
			mx = max(mx, w[i]);
		}
		for(int b = bl + 1; b < br; b ++) {
			int pos = b * B;
			for(int binl = b * B + 1, binr = b * B + B; binl <= binr; ) {
				int mid = (binl + binr) / 2;
				if(get(b * B + 1, mid) < mx) binl = mid + 1, pos = mid;
				else binr = mid - 1;
			}
			if(pos >= b * B + 1) ans = max(ans, get(b * B + 1, pos) + mx);
			if(pos < b * B + B) ans = max(ans, mxsuf[pos + 1]);
			mx = max(mx, get(b * B + 1, b * B + B));
		}
		for(int i = br * B + 1; i <= r; i ++) {
			if(mx > w[i]) ans = max(ans, w[i] + mx);
			mx = max(mx, w[i]);
		}
		cout<<(ans <= k)<<"\n";
	}
	
}
  
signed main() {		
 
    ios_base::sync_with_stdio(false);   
    cin.tie(0);cout.tie(0); 
   	
    int ttt = 1;
//    cin>>ttt;

    for(int i=1; i<=ttt; i++) { Baizho(); }
}

Compilation message

sortbooks.cpp: In function 'void Baizho()':
sortbooks.cpp:55:49: warning: suggest parentheses around '-' inside '<<' [-Wparentheses]
   55 |    sta[j][i] = max(sta[j-1][i], sta[j-1][i+(1<<j-1)]);
      |                                                ~^~
sortbooks.cpp:60:39: warning: unused variable 'ans' [-Wunused-variable]
   60 |    int r = min(n, i + B - 1), mx = 0, ans = 0;
      |                                       ^~~
sortbooks.cpp: In function 'void Freopen(std::string)':
sortbooks.cpp:34:34: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   34 | void Freopen(string Key){ freopen((Key+".in").c_str(), "r", stdin); freopen((Key+".out").c_str(), "w", stdout); }
      |                           ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
sortbooks.cpp:34:76: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   34 | void Freopen(string Key){ freopen((Key+".in").c_str(), "r", stdin); freopen((Key+".out").c_str(), "w", stdout); }
      |                                                                     ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

Subtask #1
8.0 / 8.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 3160 KB Output is correct
2 Correct 1 ms 1112 KB Output is correct
3 Correct 1 ms 7256 KB Output is correct
4 Correct 1 ms 5212 KB Output is correct
5 Correct 1 ms 7260 KB Output is correct
6 Correct 1 ms 7260 KB Output is correct
7 Correct 2 ms 7260 KB Output is correct
8 Correct 2 ms 7260 KB Output is correct
9 Correct 1 ms 7260 KB Output is correct
10 Correct 2 ms 7256 KB Output is correct

Subtask #2
9.0 / 9.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 3160 KB Output is correct
2 Correct 1 ms 1112 KB Output is correct
3 Correct 1 ms 7256 KB Output is correct
4 Correct 1 ms 5212 KB Output is correct
5 Correct 1 ms 7260 KB Output is correct
6 Correct 1 ms 7260 KB Output is correct
7 Correct 2 ms 7260 KB Output is correct
8 Correct 2 ms 7260 KB Output is correct
9 Correct 1 ms 7260 KB Output is correct
10 Correct 2 ms 7256 KB Output is correct
11 Correct 3 ms 9308 KB Output is correct
12 Correct 4 ms 11356 KB Output is correct
13 Correct 4 ms 11356 KB Output is correct
14 Correct 6 ms 11356 KB Output is correct
15 Correct 6 ms 11356 KB Output is correct
16 Correct 6 ms 11544 KB Output is correct
17 Correct 8 ms 11356 KB Output is correct
18 Correct 6 ms 11352 KB Output is correct

Subtask #3
0 / 13.0

# Verdict Execution time Memory Grader output
1 Runtime error 22 ms 9052 KB Execution killed with signal 11
2 Halted 0 ms 0 KB -

Subtask #4
17.0 / 17.0

# Verdict Execution time Memory Grader output
1 Correct 380 ms 14872 KB Output is correct
2 Correct 1090 ms 15004 KB Output is correct
3 Correct 532 ms 14748 KB Output is correct
4 Correct 389 ms 15000 KB Output is correct
5 Correct 316 ms 14912 KB Output is correct
6 Correct 1172 ms 14932 KB Output is correct
7 Correct 1212 ms 14928 KB Output is correct
8 Correct 872 ms 15104 KB Output is correct
9 Correct 41 ms 9564 KB Output is correct
10 Correct 825 ms 15292 KB Output is correct

Subtask #5
0 / 30.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 3160 KB Output is correct
2 Correct 1 ms 1112 KB Output is correct
3 Correct 1 ms 7256 KB Output is correct
4 Correct 1 ms 5212 KB Output is correct
5 Correct 1 ms 7260 KB Output is correct
6 Correct 1 ms 7260 KB Output is correct
7 Correct 2 ms 7260 KB Output is correct
8 Correct 2 ms 7260 KB Output is correct
9 Correct 1 ms 7260 KB Output is correct
10 Correct 2 ms 7256 KB Output is correct
11 Correct 3 ms 9308 KB Output is correct
12 Correct 4 ms 11356 KB Output is correct
13 Correct 4 ms 11356 KB Output is correct
14 Correct 6 ms 11356 KB Output is correct
15 Correct 6 ms 11356 KB Output is correct
16 Correct 6 ms 11544 KB Output is correct
17 Correct 8 ms 11356 KB Output is correct
18 Correct 6 ms 11352 KB Output is correct
19 Correct 1419 ms 18380 KB Output is correct
20 Correct 1461 ms 18604 KB Output is correct
21 Execution timed out 3063 ms 18044 KB Time limit exceeded
22 Halted 0 ms 0 KB -

Subtask #6
0 / 23.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 3160 KB Output is correct
2 Correct 1 ms 1112 KB Output is correct
3 Correct 1 ms 7256 KB Output is correct
4 Correct 1 ms 5212 KB Output is correct
5 Correct 1 ms 7260 KB Output is correct
6 Correct 1 ms 7260 KB Output is correct
7 Correct 2 ms 7260 KB Output is correct
8 Correct 2 ms 7260 KB Output is correct
9 Correct 1 ms 7260 KB Output is correct
10 Correct 2 ms 7256 KB Output is correct
11 Correct 3 ms 9308 KB Output is correct
12 Correct 4 ms 11356 KB Output is correct
13 Correct 4 ms 11356 KB Output is correct
14 Correct 6 ms 11356 KB Output is correct
15 Correct 6 ms 11356 KB Output is correct
16 Correct 6 ms 11544 KB Output is correct
17 Correct 8 ms 11356 KB Output is correct
18 Correct 6 ms 11352 KB Output is correct
19 Runtime error 22 ms 9052 KB Execution killed with signal 11
20 Halted 0 ms 0 KB -