#include <iostream>
#include <vector>
#include <stack>
#include <queue>
#include <deque>
#include <set>
#include <map>
#include <sstream>
#include <numeric>
#include <tuple>
#include <algorithm>
#include <unordered_map>
#define int long long
#define pp pair <bool,int>
#define ppi pair <int,int>
#define tp tuple <int,int,int,bool>
#define c1(x) cin >> x
#define c2(x,y) cin >> x >> y
#define c3(x,y,z) cin >> x >> y >> z
#define c4(x,y,z,f) cin>> x >> y >> z >> f
#define mp(a,b) make_pair(a,b)
void solve(){
int n;cin>>n;
unordered_map<int,bool> mp;
for (int i=0;i<n;++i){
int a;cin>>a;
mp[a+i] = true;
}
cout << mp.size();
}
int32_t main(){
ios_base::sync_with_stdio(0);cin.tie(0);
solve();
}
Compilation message
baloni.cpp: In function 'void solve()':
baloni.cpp:24:11: error: 'cin' was not declared in this scope; did you mean 'std::cin'?
24 | int n;cin>>n;
| ^~~
| std::cin
In file included from baloni.cpp:1:
/usr/include/c++/10/iostream:60:18: note: 'std::cin' declared here
60 | extern istream cin; /// Linked to standard input
| ^~~
baloni.cpp:25:5: error: 'unordered_map' was not declared in this scope; did you mean 'std::unordered_map'?
25 | unordered_map<int,bool> mp;
| ^~~~~~~~~~~~~
| std::unordered_map
In file included from /usr/include/c++/10/unordered_map:47,
from baloni.cpp:12:
/usr/include/c++/10/bits/unordered_map.h:102:11: note: 'std::unordered_map' declared here
102 | class unordered_map
| ^~~~~~~~~~~~~
baloni.cpp:13:13: error: expected primary-expression before 'long'
13 | #define int long long
| ^~~~
baloni.cpp:25:19: note: in expansion of macro 'int'
25 | unordered_map<int,bool> mp;
| ^~~
baloni.cpp:28:9: error: 'mp' was not declared in this scope
28 | mp[a+i] = true;
| ^~
baloni.cpp:30:5: error: 'cout' was not declared in this scope; did you mean 'std::cout'?
30 | cout << mp.size();
| ^~~~
| std::cout
In file included from baloni.cpp:1:
/usr/include/c++/10/iostream:61:18: note: 'std::cout' declared here
61 | extern ostream cout; /// Linked to standard output
| ^~~~
baloni.cpp:30:13: error: 'mp' was not declared in this scope
30 | cout << mp.size();
| ^~
baloni.cpp: In function 'int32_t main()':
baloni.cpp:35:5: error: 'ios_base' has not been declared
35 | ios_base::sync_with_stdio(0);cin.tie(0);
| ^~~~~~~~
baloni.cpp:35:34: error: 'cin' was not declared in this scope; did you mean 'std::cin'?
35 | ios_base::sync_with_stdio(0);cin.tie(0);
| ^~~
| std::cin
In file included from baloni.cpp:1:
/usr/include/c++/10/iostream:60:18: note: 'std::cin' declared here
60 | extern istream cin; /// Linked to standard input
| ^~~
