Submission #701912

#	Time	Username	Problem	Language	Result	Execution time	Memory
701912		Cyanmond	Gondola (IOI14_gondola)	C++17	20 / 100	27 ms	4668 KiB

gondola

#include "gondola.h"
#include <bits/stdc++.h>

using i64 = long long;
constexpr i64 mod = 1000000009;

int valid(int n, int inputSeq[]) {
    for (int i = 0; i < n; ++i) {
        --inputSeq[i];
    }
    {
        // double
        std::set<int> s;
        for (int i = 0; i < n; ++i) {
            s.insert(inputSeq[i]);
        }
        if (s.size() != n) {
            return false;
        }
    }
    for (int f = 0; f < n; ++f) {
        if (inputSeq[f] >= n) {
            continue;
        }
        int x = inputSeq[f];
        bool answer = true;
        for (int i = f + 1; i < n; ++i) {
            const int y = (x + 1) % n;
            if (inputSeq[i] < n and y != inputSeq[i]) {
                answer = false;
            }
            x = y;
        }
        return answer;
    }
    return true;
}

//----------------------

int replacement(int n, int gondolaSeq[], int replacementSeq[]) {
}

//----------------------

int countReplacement(int n, int inputSeq[]) {
}

Compilation message (stderr)

gondola.cpp: In function 'int valid(int, int*)':
gondola.cpp:17:22: warning: comparison of integer expressions of different signedness: 'std::set<int>::size_type' {aka 'long unsigned int'} and 'int' [-Wsign-compare]
   17 |         if (s.size() != n) {
      |             ~~~~~~~~~^~~~
gondola.cpp: In function 'int replacement(int, int*, int*)':
gondola.cpp:42:1: warning: no return statement in function returning non-void [-Wreturn-type]
   42 | }
      | ^
gondola.cpp: In function 'int countReplacement(int, int*)':
gondola.cpp:47:1: warning: no return statement in function returning non-void [-Wreturn-type]
   47 | }
      | ^

• Subtask 1: 5 / 5
• Subtask 2: 5 / 5
• Subtask 3: 10 / 10
• Subtask 4: 0 / 5
• Subtask 5: 0 / 10
• Subtask 6: 0 / 20
• Subtask 7: 0 / 5
• Subtask 8: 0 / 15
• Subtask 9: 0 / 15
• Subtask 10: 0 / 10