oj.uz

Submission #891644

# Submission time Handle Problem Language Result Execution time Memory
891644 2023-12-23T12:32:32 Z vjudge1 Meetings (IOI18_meetings) C++17
19 / 100
 699 ms 1756 KB 
#include "meetings.h"
#include <bits/stdc++.h>

using namespace std;

using vi = vector<int>;
using ll = long long;
using vll = vector<ll>;

vll solve(vector<int> V, int delta, int len) {
    stack<int> S;
    vll re;
    ll cur = 0;
    for(int i = 0; i < len; ++i) {
        while(!S.empty() && V[i + delta] > V[S.top() + delta]) {
            int p = S.top();
            S.pop();
            int p2 = 0;
            if(!S.empty()) p2 = S.top() + 1;
            cur -= 1ll * (p - p2 + 1) * V[p + delta];
        }
        int p = 0;
        if(!S.empty()) p = S.top() + 1;
        cur += 1ll * (i - p + 1) * V[i + delta];
        S.push(i);
        re.push_back(cur);
    }
    return re;
}

vll minimum_costs(vi H, vi L, vi R) {
    vector<int> S(H);
    vi RH = H;
    reverse(RH.begin(), RH.end());
    vi RS(RH);
    int n = H.size();
    vll RE;
    if(H.size() <= 5000 && L.size() <= 5000) {
        for(int q = 0; q < L.size(); ++q) {
            vll opt1 = solve(S, L[q], R[q] - L[q] + 1);
            vll opt2 = solve(RS, n - 1 - R[q], R[q] - L[q] + 1);
            reverse(opt2.begin(), opt2.end());
            ll re = opt1[0] + opt2[0];
            for(int i = 0; i < R[q] - L[q] + 1; i++)
                re = min(re, opt1[i] + opt2[i] - H[i + L[q]]);
            RE.push_back(re);
        }
        return RE;
    }
    return vll(L.size() + 1, -1);
}

Compilation message

meetings.cpp: In function 'vll minimum_costs(vi, vi, vi)':
meetings.cpp:39:26: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   39 |         for(int q = 0; q < L.size(); ++q) {
      |                        ~~^~~~~~~~~~

Subtask #1
4.0 / 4.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 344 KB Output is correct
2 Correct 1 ms 348 KB Output is correct
3 Correct 1 ms 604 KB Output is correct
4 Correct 1 ms 604 KB Output is correct
5 Correct 1 ms 604 KB Output is correct
6 Correct 1 ms 348 KB Output is correct
7 Correct 1 ms 348 KB Output is correct
8 Correct 1 ms 444 KB Output is correct
9 Correct 1 ms 604 KB Output is correct

Subtask #2
15.0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 344 KB Output is correct
2 Correct 1 ms 348 KB Output is correct
3 Correct 1 ms 604 KB Output is correct
4 Correct 1 ms 604 KB Output is correct
5 Correct 1 ms 604 KB Output is correct
6 Correct 1 ms 348 KB Output is correct
7 Correct 1 ms 348 KB Output is correct
8 Correct 1 ms 444 KB Output is correct
9 Correct 1 ms 604 KB Output is correct
10 Correct 196 ms 940 KB Output is correct
11 Correct 699 ms 1060 KB Output is correct
12 Correct 193 ms 920 KB Output is correct
13 Correct 679 ms 1184 KB Output is correct
14 Correct 93 ms 916 KB Output is correct
15 Correct 112 ms 1096 KB Output is correct

Subtask #3
0 / 17.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 348 KB Output is correct
2 Incorrect 13 ms 1756 KB Output isn't correct
3 Halted 0 ms 0 KB -

Subtask #4
0 / 24.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 348 KB Output is correct
2 Incorrect 13 ms 1756 KB Output isn't correct
3 Halted 0 ms 0 KB -

Subtask #5
0 / 40.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 344 KB Output is correct
2 Correct 1 ms 348 KB Output is correct
3 Correct 1 ms 604 KB Output is correct
4 Correct 1 ms 604 KB Output is correct
5 Correct 1 ms 604 KB Output is correct
6 Correct 1 ms 348 KB Output is correct
7 Correct 1 ms 348 KB Output is correct
8 Correct 1 ms 444 KB Output is correct
9 Correct 1 ms 604 KB Output is correct
10 Correct 196 ms 940 KB Output is correct
11 Correct 699 ms 1060 KB Output is correct
12 Correct 193 ms 920 KB Output is correct
13 Correct 679 ms 1184 KB Output is correct
14 Correct 93 ms 916 KB Output is correct
15 Correct 112 ms 1096 KB Output is correct
16 Correct 0 ms 348 KB Output is correct
17 Incorrect 13 ms 1756 KB Output isn't correct
18 Halted 0 ms 0 KB -