Submission #247364

#	Time	Username	Problem	Language	Result	Execution time	Memory
247364		errorgorn	Mouse (info1cup19_mouse)	C++14	Compilation error	0 ms	0 KiB

mouse

#include <bits/stdc++.h>
#include "grader.h"
using namespace std;
 
#define ll long long
#define fi first
#define se second 
 
#define rep(x,s,e) for (auto x=s-(s>e);x!=e-(s>e);(s<e?x++:x--))
#define all(x) (x).begin(),(x).end()
#define sz(x) (int)(x).size()
mt19937 rng (42069);

set<ii> tested;

void solve(int n){
	vector<int> v;
	
	rep(x,1,n+1){
		v.push_back(x);
	}
	
	int curr=query(v);
	
	while (curr!=n){
		int i,j;
		
		do{
			i=rng()%n,j=rng()%n;
			if (i>j) swap(i,j);
		} while (i==j && !tested.count(ii(i,j));
		
		swap(v[i],v[j]);
		int temp=query(v);
		if (temp<curr){
			swap(v[i],v[j]);
			tested.insert(ii(i,j));
		}
		else{
			tested.clear();
			curr=temp;
		}
	}
}

Compilation message (stderr)

mouse.cpp:14:5: error: 'ii' was not declared in this scope
 set<ii> tested;
     ^~
mouse.cpp:14:5: note: suggested alternative: 'fi'
 set<ii> tested;
     ^~
     fi
mouse.cpp:14:7: error: template argument 1 is invalid
 set<ii> tested;
       ^
mouse.cpp:14:7: error: template argument 2 is invalid
mouse.cpp:14:7: error: template argument 3 is invalid
mouse.cpp: In function 'void solve(int)':
mouse.cpp:31:28: error: request for member 'count' in 'tested', which is of non-class type 'int'
   } while (i==j && !tested.count(ii(i,j));
                            ^~~~~
mouse.cpp:31:34: error: 'ii' was not declared in this scope
   } while (i==j && !tested.count(ii(i,j));
                                  ^~
mouse.cpp:31:34: note: suggested alternative: 'i'
   } while (i==j && !tested.count(ii(i,j));
                                  ^~
                                  i
mouse.cpp:31:42: error: expected ')' before ';' token
   } while (i==j && !tested.count(ii(i,j));
                                          ^
mouse.cpp:37:11: error: request for member 'insert' in 'tested', which is of non-class type 'int'
    tested.insert(ii(i,j));
           ^~~~~~
mouse.cpp:40:11: error: request for member 'clear' in 'tested', which is of non-class type 'int'
    tested.clear();
           ^~~~~