# |
Submission time |
Handle |
Problem |
Language |
Result |
Execution time |
Memory |
123866 |
2019-07-02T08:15:26 Z |
임유진(#3031) |
Meetings (JOI19_meetings) |
C++14 |
|
0 ms |
0 KB |
#include "meetings.h"
#include<vector>
using namespace std;
void f(vector<int> &v) {
if(v.size() == 1) return;
if(v.size() == 2) {
Bridge(min(v[0], v[1]), max(v[0], v[1]));
return;
}
/*
printf("f(");
for(auto a : v) printf("%d ", a);
printf(")\n");
*/
random_shuffle(v.begin(), v.end());
int alpha = v[0], beta = v[1];
vector<int> X, Y;
X.push_back(alpha);
Y.push_back(beta);
for(int i = 2; i < v.size(); i++) {
if(v[i] == beta) {
Y.push_back(v[i]);
continue;
}
int t = Query(alpha, beta, v[i]);
if(t != alpha && t != beta) beta = t;
if(t == alpha) X.push_back(v[i]);
else Y.push_back(v[i]);
}
Bridge(min(alpha, beta), max(alpha, beta));
f(X);
f(Y);
}
void Solve(int N) {
vector<int> v(N);
for(int i = 0; i < N; i++) v[i] = i;
f(v);
}
Compilation message
meetings.cpp: In function 'void f(std::vector<int>&)':
meetings.cpp:19:2: error: 'random_shuffle' was not declared in this scope
random_shuffle(v.begin(), v.end());
^~~~~~~~~~~~~~
meetings.cpp:25:19: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
for(int i = 2; i < v.size(); i++) {
~~^~~~~~~~~~