# | Time | Username | Problem | Language | Result | Execution time | Memory |
---|---|---|---|---|---|---|---|
1249548 | Charizard2021 | Triple Peaks (IOI25_triples) | C++20 | 1037 ms | 1984 KiB |
#include<bits/stdc++.h>
#include "triples.h"
using namespace std;
long long count_triples(vector<int> H){
int n = (int)H.size();
if(n <= 100){
long long ans = 0;
for(int i = 0; i < n; i++){
for(int j = i + 1; j < n; j++){
for(int k = j + 1; k < n; k++){
vector<int> v;
v.push_back(j - i);
v.push_back(k - j);
v.push_back(k - i);
vector<int> v2;
v2.push_back(H[i]);
v2.push_back(H[j]);
v2.push_back(H[k]);
sort(v2.begin(), v2.end());
sort(v.begin(), v.end());
if(v == v2){
ans++;
}
}
}
}
return ans;
}
int thing = 0;
for(int i = 0; i < n; i++){
thing = max(thing, H[i]);
}
if(thing <= 10){
long long ans = 0;
for(int i = 0; i + 10 < n; i++){
for(int j = i + 1; j <= i + 10; j++){
for(int k = j + 1; k <= i + 10; k++){
vector<int> v;
v.push_back(j - i);
v.push_back(k - j);
v.push_back(k - i);
vector<int> v2;
v2.push_back(H[i]);
v2.push_back(H[j]);
v2.push_back(H[k]);
sort(v2.begin(), v2.end());
sort(v.begin(), v.end());
if(v == v2){
ans++;
}
}
}
}
return ans;
}
}
std::vector<int> construct_range(int M, int K) {
return {1, 1, 1};
}
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