Submission #1055615

#	Time	Username	Problem	Language	Result	Execution time	Memory
1055615		vjudge1	Radio Towers (IOI22_towers)	C++17	14 / 100	521 ms	1952 KiB

towers

#include "towers.h"

#include <vector>
using namespace std;
int valley[100100];
vector<int>H;
void init(int N, std::vector<int> H_) {
    H=H_;
    for(int i=1;i<N;i++)
        valley[i]=valley[i-1]+(H[i]<H[i-1]&&H[i]<H[i+1]);
}

int max_towers(int l, int r, int D) {
    if(l==r) return 1;
    return (H[l]<H[l+1])+(H[r-1]>H[r])+valley[r-1]-valley[l];
}

• Subtask 1: 0 / 4
• Subtask 2: 0 / 11
• Subtask 3: 0 / 12
• Subtask 4: 14 / 14
• Subtask 5: 0 / 17
• Subtask 6: 0 / 19
• Subtask 7: 0 / 23