Submission #638735

#	Time	Username	Problem	Language	Result	Execution time	Memory
638735		aris12345678	Thousands Islands (IOI22_islands)	C++17	5 / 100	34 ms	3628 KiB

islands

#include "islands.h"
#include <bits/stdc++.h>
using namespace std;

variant<bool, vector<int> > find_journey(int n, int m, vector<int> u, vector<int> v) {
    if(n == 2)
        return false;
    int a, b, c, d, e, f;
    for(int i = 0; i < m; i++) {
        if(u[i] == 0 && v[i] == 1)
            a = i;
        if(u[i] == 1 && v[i] == 2)
            b = i;
        if(u[i] == 2 && v[i] == 0)
            c = i;
        if(u[i] == 1 && v[i] == 0)
            d = i;
        if(u[i] == 2 && v[i] == 1)
            e = i;
        if(u[i] == 0 && v[i] == 2)
            f = i;
    }
    return vector<int>({a, b, c, f, e, d, c, b, a, d, e, f});
}

Compilation message (stderr)

islands.cpp: In function 'std::variant<bool, std::vector<int, std::allocator<int> > > find_journey(int, int, std::vector<int>, std::vector<int>)':
islands.cpp:23:60: warning: 'f' may be used uninitialized in this function [-Wmaybe-uninitialized]
   23 |     return vector<int>({a, b, c, f, e, d, c, b, a, d, e, f});
      |                                                            ^
islands.cpp:23:60: warning: 'e' may be used uninitialized in this function [-Wmaybe-uninitialized]
islands.cpp:23:60: warning: 'd' may be used uninitialized in this function [-Wmaybe-uninitialized]
islands.cpp:23:60: warning: 'c' may be used uninitialized in this function [-Wmaybe-uninitialized]
islands.cpp:23:60: warning: 'b' may be used uninitialized in this function [-Wmaybe-uninitialized]
islands.cpp:23:60: warning: 'a' may be used uninitialized in this function [-Wmaybe-uninitialized]

• Subtask 1: 0 / 5
• Subtask 2: 5 / 5
• Subtask 3: 0 / 21
• Subtask 4: 0 / 24
• Subtask 5: 0 / 45