Submission #1250357

#TimeUsernameProblemLanguageResultExecution timeMemory
1250357guymmkTriple Peaks (IOI25_triples)C++20
0 / 100
2093 ms2632 KiB
// Source: https://usaco.guide/general/io #include <bits/stdc++.h> #include "triples.h" using namespace std; vector<int> v; int is_triple(vector<int>g){ vector<int>a,b; a={g[1]-g[0],g[2]-g[0],g[2]-g[1]}; b={v[g[0]],v[g[1]],v[g[2]]}; sort(a.begin(),a.end()); sort(b.begin(),b.end()); return (int)(a==b); } long long count_triples(vector<int> hsh) { v=hsh; int ans=0; int n=v.size(); for(int i=0;i<n;i++){ for(int j=i+1;j<n;j++){ if(v[i]!=j-i){ if(v[i]>j-i)ans+=is_triple({i,j,i+v[i]}); ans+=is_triple({i,j,j+v[i]}); } if(v[i]!=j-i){ if(v[j]>j-i)ans+=is_triple({i,j,i+v[j]}); ans+=is_triple({i,j,j+v[j]}); }if(v[i]==v[j]){ if(v[j]>j-i)ans+=is_triple({i,j,i+v[j]}); ans+=is_triple({i,j,j+v[j]}); } } }return ans/2; } vector<int> construct_range(int M, int K) { return {1, 1, 1}; }
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