Submission #162491

#	Time	Username	Problem	Language	Result	Execution time	Memory
162491		abacaba	Combo (IOI18_combo)	C++14	Compilation error	0 ms	0 KiB

combo

#include <bits/stdc++.h>
#include "combo.h"
using namespace std;
 
#define max3(a, b, c) max(a, max(b, c))
#define min3(a, b, c) min(a, min(b, c))
#define mp make_pair
#define f first
#define se second
#define pb push_back
#define ppb pop_back
#define ll long long
#define y1 abcde
#define ull unsigned long long
#define cntbit(x) __builtin_popcount(x)
#define endl '\n'
#define uset unordered_set
#define umap unordered_map
#define pii pair<int, int>
#define ld long double
#define pll pair<long long, long long>

string seq[4] = {"A", "B", "X", "Y"};
int n, let1 = 3;

string seq[4] = {"A", "B", "X", "Y"};
int n, let1 = 3;

string guess_sequence(int N) {
    for(int i = 0; i < 3; ++i)
        if(press(seq[i])) {
            let1 = i;
            break;
        }
    string s = seq[let1];
    swap(seq[3], seq[let1]);

    for(int i = 1; i + 1 < N; ++i) {
        string now = s + seq[0];
        for(int j = 0; j < 3; ++j)
            now += s + seq[1] + seq[j];
        int p = press(now);
        if(p == s.size())
            s += seq[2];
        else if(p == s.size() + 1)
            s += seq[0];
        else
            s += seq[1];
    }
    assert(s.size() == N - 1);
    for(int i = 0; i < 2; ++i)
        if(press(s + seq[i]) == N)
            return s + seq[i];
    return s + seq[2];
}

Compilation message (stderr)

combo.cpp:26:8: error: redefinition of 'std::string seq [4]'
   26 | string seq[4] = {"A", "B", "X", "Y"};
      |        ^~~
combo.cpp:23:8: note: 'std::string seq [4]' previously declared here
   23 | string seq[4] = {"A", "B", "X", "Y"};
      |        ^~~
combo.cpp:27:5: error: redefinition of 'int n'
   27 | int n, let1 = 3;
      |     ^
combo.cpp:24:5: note: 'int n' previously declared here
   24 | int n, let1 = 3;
      |     ^
combo.cpp:27:8: error: redefinition of 'int let1'
   27 | int n, let1 = 3;
      |        ^~~~
combo.cpp:24:8: note: 'int let1' previously defined here
   24 | int n, let1 = 3;
      |        ^~~~
combo.cpp: In function 'std::string guess_sequence(int)':
combo.cpp:43:14: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   43 |         if(p == s.size())
      |            ~~^~~~~~~~~~~
combo.cpp:45:19: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   45 |         else if(p == s.size() + 1)
      |                 ~~^~~~~~~~~~~~~~~
In file included from /usr/include/c++/10/cassert:44,
                 from /usr/include/x86_64-linux-gnu/c++/10/bits/stdc++.h:33,
                 from combo.cpp:1:
combo.cpp:50:21: warning: comparison of integer expressions of different signedness: 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} and 'int' [-Wsign-compare]
   50 |     assert(s.size() == N - 1);
      |            ~~~~~~~~~^~~~~~~~