Submission #211866

#	TimeUTC-0	Username	Problem	Language	Result	Execution time	Memory
211866	2020-03-21 14:33:46	3zp	Chameleon's Love (JOI20_chameleon)	C++14	100 / 100	69 ms	524 KiB

chameleon

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#include "chameleon.h"
#include <bits/stdc++.h>
using namespace std;
int f[1009],g[1009], n;
int ask(vector<int> a, int b){
    a.push_back(b);
    return Query(a);
}
bool check(int a, int b){
    vector<int> v;
    for(int i = 1; i <= 2*n; i++)
        if(i != a && i != b)
            v.push_back(i);
    return Query(v) != n;
}
int solve(vector<int> v, int x, int d){
    int lo = 0, hi = v.size()-1;
    while(lo < hi){
        int mid = (lo + hi)/2;
        vector<int> w;
        for(int i = 0; i <= mid; i++)
            w.push_back(v[i]);
        w.push_back(x);
        if(Query(w) <= mid + 1 - d)
            hi = mid;
        else lo = mid + 1;
    }
    return v[lo];
}
 
 
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Compilation message (stderr)

chameleon.cpp: In function 'void Solve(int)':
chameleon.cpp:40:26: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
         for(int k = 0; k < A.size(); k++){
                        ~~^~~~~~~~~~
chameleon.cpp:41:29: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
             if(ask(A[k], i) == A[k].size()+1){
                ~~~~~~~~~~~~~^~~~~~~~~~~~~~~~
chameleon.cpp:61:26: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
         for(int j = 0; j < A.size(); j++){
                        ~~^~~~~~~~~~
chameleon.cpp:64:18: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
             if(q == A[j].size()-1)
                ~~^~~~~~~~~~~~~~~~
chameleon.cpp:66:18: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
             if(q == A[j].size())
                ~~^~~~~~~~~~~~~~
chameleon.cpp:32:20: warning: 'y' may be used uninitialized in this function [-Wmaybe-uninitialized]
     g[x] = 1; g[y] = 1;
               ~~~~~^~~
chameleon.cpp:73:21: note: 'y' was declared here
                 int y;
                     ^

• Subtask 1: 4 / 4
• Subtask 2: 20 / 20
• Subtask 3: 20 / 20
• Subtask 4: 20 / 20
• Subtask 5: 36 / 36