Submission #672133

#	TimeUTC-0	Username	Problem	Language	Result	Execution time	Memory
672133	2022-12-14 19:59:57	c2zi6	Rainforest Jumps (APIO21_jumps)	C++14	23 / 100	1266 ms	67400 KiB

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#include <bits/stdc++.h>
using namespace std;
int n;
vector<int> h;
vector<int> minV;
vector<int> maxV;
vector<vector<int>> liftingMin;
vector<vector<int>> liftingMax;
void init(int N, std::vector<int> H) {
    n = N, h = H;
    minV = maxV = vector<int>(n);
    liftingMin = liftingMax = vector<vector<int>>(n, vector<int>(30, -1));
    {
        stack<pair<int, int>> st;
        st.push({1e9, -1});
        for (int i = 0; i < n; i++) {
            while (st.top().first < h[i]) st.pop();
            minV[i] = st.top().second;
            st.push({h[i], i});
        }
    }
    {
        stack<pair<int, int>> st;
        st.push({1e9, -1});
        for (int i = n-1; i >= 0; i--) {
            while (st.top().first < h[i]) st.pop();
            maxV[i] = st.top().second;
 
 
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Compilation message (stderr)

jumps.cpp: In function 'std::pair<int, int> blift(std::vector<std::vector<int> >&, int, int)':
jumps.cpp:80:1: warning: control reaches end of non-void function [-Wreturn-type]
   80 | }
      | ^
jumps.cpp: In function 'int minimum_jumps(int, int, int, int)':
jumps.cpp:90:1: warning: control reaches end of non-void function [-Wreturn-type]
   90 | }
      | ^
jumps.cpp: In function 'int main2()':
jumps.cpp:98:23: warning: 'N' is used uninitialized in this function [-Wuninitialized]
   98 |   std::vector<int> H(N);
      |                       ^

• Subtask 1: 0 / 4
• Subtask 2: 0 / 8
• Subtask 3: 0 / 13
• Subtask 4: 0 / 12
• Subtask 5: 23 / 23
• Subtask 6: 0 / 21
• Subtask 7: 0 / 19