Submission #1261849

#	Time	Username	Problem	Language	Result	Execution time	Memory
1261849		Canuc80k	Triple Peaks (IOI25_triples)	C++20	0 / 100	12 ms	1860 KiB

triples

#include "bits/stdc++.h"
using namespace std;
using ll = long long;
using ld = long double;
using ull = unsigned long long;

map<ll, ll> pp[11];
long long count_triples(std::vector<int> H) {
    for (int i = 0; i < H.size(); i ++) pp[H[i]][i] ++; 

    ll res = 0;
    for (int i = 1; i <= 10; i ++)
        for (int j = i + 1; j <= 10; j ++)
            for (int k = j + 1; k <= 10; k ++) {
                ll a = j - i, b = k - i, c = k - i;
                bool oka = 0, okb = 0, okc = 0;
                if (pp[i][a] || pp[j][a] || pp[k][a]) oka = 1; 
                if (pp[i][b] || pp[j][b] || pp[k][b]) okb = 1;
                if (pp[i][c] || pp[j][c] || pp[k][c]) okc = 1;
                if (oka && okb && okc) res ++;
            }
    return res;
}

std::vector<int> construct_range(int M, int K) {
    // vector<int> res; res.push_back(1);
    // for (int i = 1; i < M; i ++) res.push_back(i);
    // return res;
}

Compilation message (stderr)

triples.cpp: In function 'std::vector<int> construct_range(int, int)':
triples.cpp:29:1: warning: no return statement in function returning non-void [-Wreturn-type]
   29 | }
      | ^

• Subtask 0: 0 / 0
• Subtask 1: 0 / 8
• Subtask 2: 0 / 6
• Subtask 3: 0 / 10
• Subtask 4: 0 / 11
• Subtask 5: 0 / 16
• Subtask 6: 0 / 19
• Subtask 7: 0 / 5
• Subtask 8: 0 / 5
• Subtask 9: 0 / 5
• Subtask 10: 0 / 5
• Subtask 11: 0 / 5
• Subtask 12: 0 / 5