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Submission #389945

# Submission time Handle Problem Language Result Execution time Memory
389945 2021-04-14T22:17:54 Z ritul_kr_singh Wall (IOI14_wall) C++17
100 / 100
 970 ms 67240 KB 
#include <bits/stdc++.h>
using namespace std;
//#define int long long
#define sp << ' ' <<
#define nl << '\n'
#include "wall.h"

const int INF = 1e18;

struct SegmentTree{
	using T = array<int, 2>;
	vector<T> a;
	int sz = 1;
	T ID = {0, INF};
	SegmentTree(int n){
		while(sz < n) sz += sz;
		a.assign(2*sz, ID);
	}
	void apply(T &x, T &y){
		y[0] = max(y[0], x[0]);
		y[1] = max(y[1], x[0]);
		y[0] = min(y[0], x[1]);
		y[1] = min(y[1], x[1]);
	}
	void push(int x){
		if(a[x] == ID) return;
		if(x+1<sz){
			apply(a[x], a[2*x+1]);
			apply(a[x], a[2*x+2]);
			a[x] = ID;
		}
	}
	void update(int l, int r, T v, int x, int lx, int rx){
		push(x);
		if(r<=lx or rx<=l) return;
		if(l<=lx and rx<=r) return apply(v, a[x]);
		int mx = (lx+rx)/2;
		update(l, r, v, 2*x+1, lx, mx);
		update(l, r, v, 2*x+2, mx, rx);
	}
	void update(int l, int r, int low, int high){
		T v = {low, high};
		update(l, r+1, v, 0, 0, sz);
	}
	void build(vector<int> &ans, int n, int x, int lx, int rx){
		push(x);
		if(rx-lx==1){
			// cout << a[x][0] nl;
			if(lx<n) ans[lx] = a[x][0];
			return;
		}
		int mx = (lx+rx)/2;
		build(ans, n, 2*x+1, lx, mx);
		build(ans, n, 2*x+2, mx, rx);
	}
};

void buildWall(int n, int k, int op[], int left[], int right[], int height[], int finalHeight[]){
	SegmentTree st(n);
	for(int i=0; i<k; ++i){
		// cout << op[i] sp left[i] sp right[i] sp height[i] nl;
		if(op[i]==1) st.update(left[i], right[i], height[i], INF);
		else st.update(left[i], right[i], 0, height[i]);
	}
	vector<int> ans(n);

	st.build(ans, n, 0, 0, st.sz);
	for(int i=0; i<n; ++i) finalHeight[i] = ans[i];
}

Compilation message

wall.cpp:8:17: warning: overflow in conversion from 'double' to 'int' changes value from '1.0e+18' to '2147483647' [-Woverflow]
    8 | const int INF = 1e18;
      |                 ^~~~

Subtask #1
8.0 / 8.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 204 KB Output is correct
2 Correct 3 ms 332 KB Output is correct
3 Correct 3 ms 332 KB Output is correct
4 Correct 10 ms 716 KB Output is correct
5 Correct 6 ms 692 KB Output is correct
6 Correct 8 ms 716 KB Output is correct

Subtask #2
24.0 / 24.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 204 KB Output is correct
2 Correct 163 ms 13888 KB Output is correct
3 Correct 253 ms 7896 KB Output is correct
4 Correct 709 ms 20488 KB Output is correct
5 Correct 379 ms 21108 KB Output is correct
6 Correct 386 ms 19524 KB Output is correct

Subtask #3
29.0 / 29.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 204 KB Output is correct
2 Correct 2 ms 332 KB Output is correct
3 Correct 3 ms 332 KB Output is correct
4 Correct 8 ms 716 KB Output is correct
5 Correct 6 ms 716 KB Output is correct
6 Correct 6 ms 800 KB Output is correct
7 Correct 0 ms 204 KB Output is correct
8 Correct 161 ms 13836 KB Output is correct
9 Correct 269 ms 7896 KB Output is correct
10 Correct 741 ms 20508 KB Output is correct
11 Correct 399 ms 21104 KB Output is correct
12 Correct 371 ms 19512 KB Output is correct
13 Correct 1 ms 204 KB Output is correct
14 Correct 177 ms 13908 KB Output is correct
15 Correct 63 ms 1868 KB Output is correct
16 Correct 776 ms 20676 KB Output is correct
17 Correct 393 ms 20036 KB Output is correct
18 Correct 386 ms 19908 KB Output is correct

Subtask #4
39.0 / 39.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 204 KB Output is correct
2 Correct 2 ms 332 KB Output is correct
3 Correct 2 ms 332 KB Output is correct
4 Correct 8 ms 716 KB Output is correct
5 Correct 8 ms 716 KB Output is correct
6 Correct 8 ms 844 KB Output is correct
7 Correct 1 ms 204 KB Output is correct
8 Correct 172 ms 13844 KB Output is correct
9 Correct 269 ms 7900 KB Output is correct
10 Correct 751 ms 20556 KB Output is correct
11 Correct 377 ms 21024 KB Output is correct
12 Correct 359 ms 19540 KB Output is correct
13 Correct 0 ms 204 KB Output is correct
14 Correct 170 ms 13828 KB Output is correct
15 Correct 44 ms 1964 KB Output is correct
16 Correct 776 ms 20560 KB Output is correct
17 Correct 383 ms 19980 KB Output is correct
18 Correct 393 ms 19872 KB Output is correct
19 Correct 970 ms 67036 KB Output is correct
20 Correct 950 ms 67012 KB Output is correct
21 Correct 970 ms 66972 KB Output is correct
22 Correct 954 ms 67112 KB Output is correct
23 Correct 967 ms 67008 KB Output is correct
24 Correct 951 ms 67240 KB Output is correct
25 Correct 937 ms 67076 KB Output is correct
26 Correct 938 ms 67012 KB Output is correct
27 Correct 956 ms 67152 KB Output is correct
28 Correct 943 ms 67008 KB Output is correct
29 Correct 942 ms 67012 KB Output is correct
30 Correct 959 ms 67016 KB Output is correct