oj.uz

Submission #261272

# Submission time Handle Problem Language Result Execution time Memory
261272 2020-08-11T15:42:57 Z Saboon Treatment Project (JOI20_treatment) C++14
4 / 100
 93 ms 6644 KB 
#include <bits/stdc++.h>
using namespace std;
typedef long long ll;
const ll maxn = 2e5 + 10;

ll T[maxn], L[maxn], R[maxn], C[maxn], p[maxn], dp[maxn];

int main(){
	ios_base::sync_with_stdio(false);
	ll n, m;
	cin >> n >> m;
	for (ll i = 1; i <= m; i++)
		cin >> T[i] >> L[i] >> R[i] >> C[i];
	if (*max_element(T+1, T+m+1) == 1){
		for (ll i = 1; i <= m; i++)
			p[i] = i;
		sort(p+1, p+m+1, [](ll a, ll b){ return R[a] < R[b]; });
		vector<ll> S;
		for (ll iit = 1; iit <= m; iit++){
			ll i = p[iit];
			if (L[i] == 1)
				dp[i] = C[i];
			else
				dp[i] = -1;
			if (S.empty()){
				if (dp[i] != -1)
					S.push_back(i);
				continue;
			}
			ll lo = -1, hi = S.size();
			while (hi - lo > 1){
				ll mid = (lo + hi) >> 1;
				if (R[S[mid]]+1 < L[i])
					lo = mid;
				else
					hi = mid;
			}
			if (hi == S.size())
				continue;
			if (dp[i] == -1 or dp[i] > dp[S[hi]] + C[i])
				dp[i] = dp[S[hi]] + C[i];
			while (!S.empty() and dp[S.back()] >= dp[i])
				S.pop_back();
			S.push_back(i);
		}
		ll answer = -1;
		for (ll i = 1; i <= m; i++)
			if (R[i] == n and dp[i] != -1 and (answer == -1 or answer > dp[i]))
				answer = dp[i];
		cout << answer << endl;
		return 0;
	}
	for (ll i = 1; i <= m; i++)
		p[i] = i;
	for (ll _ = 0; _ < m; _++){
		for (ll iit = 1; iit <= m; iit++){
			ll i = p[iit];
			if (L[i] == 1)
				dp[i] = C[i];
			for (ll jit = 1; jit <= m; jit++){
				ll j = p[jit];
				if (L[j] <= R[i] and abs(T[i]-T[j]) <= R[j]-L[i]+1 and dp[j] != -1)
					if (dp[i] == -1 or dp[i] > dp[j] + C[i])
						dp[i] = dp[j] + C[i];
			}
		}
	}
	ll answer = -1;
	for (ll i = 1; i <= m; i++)
		if (R[i] == n and dp[i] != -1 and (answer == -1 or answer > dp[i]))
			answer = dp[i];
	cout << answer << endl;
}

Compilation message

treatment.cpp: In function 'int main()':
treatment.cpp:38:11: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
    if (hi == S.size())
        ~~~^~~~~~~~~~~

Subtask #1
4.0 / 4.0

# Verdict Execution time Memory Grader output
1 Correct 93 ms 6644 KB Output is correct
2 Correct 84 ms 6136 KB Output is correct
3 Correct 81 ms 6136 KB Output is correct
4 Correct 81 ms 6136 KB Output is correct
5 Correct 70 ms 5460 KB Output is correct
6 Correct 72 ms 5496 KB Output is correct
7 Correct 83 ms 5752 KB Output is correct
8 Correct 66 ms 5496 KB Output is correct
9 Correct 65 ms 5496 KB Output is correct
10 Correct 65 ms 5496 KB Output is correct
11 Correct 81 ms 5496 KB Output is correct
12 Correct 74 ms 5496 KB Output is correct
13 Correct 78 ms 5496 KB Output is correct
14 Correct 80 ms 5496 KB Output is correct
15 Correct 84 ms 5496 KB Output is correct
16 Correct 80 ms 5496 KB Output is correct
17 Correct 75 ms 5496 KB Output is correct
18 Correct 65 ms 5496 KB Output is correct

Subtask #2
0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 512 KB Output is correct
2 Incorrect 1 ms 384 KB Output isn't correct
3 Halted 0 ms 0 KB -

Subtask #3
0 / 30.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 512 KB Output is correct
2 Incorrect 1 ms 384 KB Output isn't correct
3 Halted 0 ms 0 KB -

Subtask #4
0 / 61.0

# Verdict Execution time Memory Grader output
1 Correct 93 ms 6644 KB Output is correct
2 Correct 84 ms 6136 KB Output is correct
3 Correct 81 ms 6136 KB Output is correct
4 Correct 81 ms 6136 KB Output is correct
5 Correct 70 ms 5460 KB Output is correct
6 Correct 72 ms 5496 KB Output is correct
7 Correct 83 ms 5752 KB Output is correct
8 Correct 66 ms 5496 KB Output is correct
9 Correct 65 ms 5496 KB Output is correct
10 Correct 65 ms 5496 KB Output is correct
11 Correct 81 ms 5496 KB Output is correct
12 Correct 74 ms 5496 KB Output is correct
13 Correct 78 ms 5496 KB Output is correct
14 Correct 80 ms 5496 KB Output is correct
15 Correct 84 ms 5496 KB Output is correct
16 Correct 80 ms 5496 KB Output is correct
17 Correct 75 ms 5496 KB Output is correct
18 Correct 65 ms 5496 KB Output is correct
19 Correct 1 ms 512 KB Output is correct
20 Incorrect 1 ms 384 KB Output isn't correct
21 Halted 0 ms 0 KB -