oj.uz

Submission #340791

# Submission time Handle Problem Language Result Execution time Memory
340791 2020-12-28T11:08:49 Z tengiz05 Divide and conquer (IZhO14_divide) C++17
100 / 100
 96 ms 6528 KB 
#include <bits/stdc++.h>
using namespace std;
#define int long long
#define FASTIO ios_base::sync_with_stdio(false); cin.tie(NULL);
#define all(x) (x).begin(), (x).end()
#define pb push_back
#define pii pair<int, int>
#define ff first
#define ss second
#define PI acos(-1)
#define ld long double
template<class T> bool chmin(T& a, const T& b) {return a>b? a=b, true:false;}
template<class T> bool chmax(T& a, const T& b) {return a<b? a=b, true:false;}
const int mod = 1e9+7, N = 2e5+5;
int msb(int val){return sizeof(int)*8-__builtin_clzll(val)-1;}
int a[N], n, m, k;
int prd[N];
int prg[N];
int mx[N*4];
void update(int pos, int L, int R, int x, int val){
	if(L == R){
		mx[x] = val;
		//~ cout << L << ' ' << val << '\n';
		return;
	}int mid = (L+R)/2;
	if(mid >= pos)update(pos, L, mid, x*2, val);
	else update(pos, mid+1, R, x*2+1, val);
	mx[x] = max(mx[x*2], mx[x*2+1]);
}
int tmp;
int get(int l, int r, int L, int R, int x){
	if(L > r || R < l)return 0;
	if(L == R){
		if(mx[x] >= tmp)return L;
		else return 0;
	}
	int mid = (L+R)/2;
	if(L >= l && R <= r){
		if(mx[x*2+1] >= tmp)return get(l, r, mid+1, R, x*2+1);
		else return get(l, r, L, mid, x*2);
	}
	return max(get(l, r, L, mid, x*2), get(l, r, mid+1, R, x*2+1));
}
void solve(int test_case){
	int i, j;
	vector<tuple<int, int, int>> v;
	cin >> n;
	v.pb(make_tuple(0,0,0));
	for(i=0;i<n;i++){
		int x, g, d;
		cin >> x >> g >> d;
		v.pb(make_tuple(x, g, d));
	}
	//~ sort(all(v));
	for(i=1;i<=n;i++){
		prd[i] = prd[i-1] + get<2>(v[i]);
		prg[i] = prg[i-1] + get<1>(v[i]);
		update(i, 1, n, 1, prd[i] - get<0>(v[i]));
	}
	
	tmp = -mod;
	int ans = 0;
	for(i=1;i<=n;i++){
		tmp = prd[i-1] - get<0>(v[i]);
		int t = get(i, n, 1, n, 1);
		chmax(ans, prg[t] - prg[i-1]);
	}
	cout << ans << '\n';
	return;
}

signed main(){
	FASTIO;
#define MULTITEST 0
#if MULTITEST
	int _T;
	cin >> _T;
	for(int T_CASE = 1; T_CASE <= _T; T_CASE++)
		solve(T_CASE);
#else
	solve(1);
#endif
	return 0;
}

Compilation message

divide.cpp: In function 'void solve(long long int)':
divide.cpp:45:9: warning: unused variable 'j' [-Wunused-variable]
   45 |  int i, j;
      |         ^

Subtask #1
17.0 / 17.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 364 KB Output is correct
2 Correct 1 ms 364 KB Output is correct
3 Correct 1 ms 364 KB Output is correct
4 Correct 1 ms 364 KB Output is correct
5 Correct 1 ms 364 KB Output is correct
6 Correct 1 ms 364 KB Output is correct
7 Correct 1 ms 364 KB Output is correct
8 Correct 1 ms 364 KB Output is correct
9 Correct 1 ms 364 KB Output is correct
10 Correct 1 ms 364 KB Output is correct
11 Correct 1 ms 364 KB Output is correct
12 Correct 1 ms 364 KB Output is correct

Subtask #2
31.0 / 31.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 364 KB Output is correct
2 Correct 1 ms 364 KB Output is correct
3 Correct 1 ms 364 KB Output is correct
4 Correct 1 ms 364 KB Output is correct
5 Correct 1 ms 364 KB Output is correct
6 Correct 1 ms 364 KB Output is correct
7 Correct 1 ms 364 KB Output is correct
8 Correct 1 ms 364 KB Output is correct
9 Correct 1 ms 364 KB Output is correct
10 Correct 1 ms 364 KB Output is correct
11 Correct 1 ms 364 KB Output is correct
12 Correct 1 ms 364 KB Output is correct
13 Correct 1 ms 364 KB Output is correct
14 Correct 1 ms 364 KB Output is correct
15 Correct 1 ms 364 KB Output is correct
16 Correct 1 ms 492 KB Output is correct
17 Correct 1 ms 492 KB Output is correct
18 Correct 1 ms 492 KB Output is correct
19 Correct 1 ms 492 KB Output is correct
20 Correct 1 ms 492 KB Output is correct
21 Correct 2 ms 492 KB Output is correct
22 Correct 2 ms 492 KB Output is correct
23 Correct 4 ms 812 KB Output is correct
24 Correct 4 ms 812 KB Output is correct

Subtask #3
52.0 / 52.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 364 KB Output is correct
2 Correct 1 ms 364 KB Output is correct
3 Correct 1 ms 364 KB Output is correct
4 Correct 1 ms 364 KB Output is correct
5 Correct 1 ms 364 KB Output is correct
6 Correct 1 ms 364 KB Output is correct
7 Correct 1 ms 364 KB Output is correct
8 Correct 1 ms 364 KB Output is correct
9 Correct 1 ms 364 KB Output is correct
10 Correct 1 ms 364 KB Output is correct
11 Correct 1 ms 364 KB Output is correct
12 Correct 1 ms 364 KB Output is correct
13 Correct 1 ms 364 KB Output is correct
14 Correct 1 ms 364 KB Output is correct
15 Correct 1 ms 364 KB Output is correct
16 Correct 1 ms 492 KB Output is correct
17 Correct 1 ms 492 KB Output is correct
18 Correct 1 ms 492 KB Output is correct
19 Correct 1 ms 492 KB Output is correct
20 Correct 1 ms 492 KB Output is correct
21 Correct 2 ms 492 KB Output is correct
22 Correct 2 ms 492 KB Output is correct
23 Correct 4 ms 812 KB Output is correct
24 Correct 4 ms 812 KB Output is correct
25 Correct 4 ms 812 KB Output is correct
26 Correct 8 ms 1128 KB Output is correct
27 Correct 8 ms 1128 KB Output is correct
28 Correct 43 ms 3424 KB Output is correct
29 Correct 50 ms 3424 KB Output is correct
30 Correct 96 ms 6492 KB Output is correct
31 Correct 88 ms 6528 KB Output is correct
32 Correct 89 ms 6492 KB Output is correct
33 Correct 93 ms 6492 KB Output is correct
34 Correct 77 ms 6492 KB Output is correct
35 Correct 79 ms 6492 KB Output is correct
36 Correct 82 ms 6492 KB Output is correct