#include <bits/stdc++.h>
#define all(v) v.begin(), v.end()
#define sz(x) (int)x.size()
#define pb push_back
#define pii pair<int, int>
#define chmin(x, v) x = min(x, v)
#define chmax(x, v) x = max(x, v)
#define print(x) cout << #x << " est " << x << endl;
#define x first
#define y second
#define int long long
using namespace std;
const int N = 2e5;
int date[N];
signed main(){
int nServs, nReqs; cin >> nServs >> nReqs;
int ip = 1;
nReqs += nServs - 1;
while (nReqs--){
char t; cin >> t;
if (t == 'S'){
int a, b; cin >> a >> b;
date[max(a, b)] = ip++;
}
else if (t == 'Q'){
int a, d; cin >> a >> d;
if (date[d] <= date[a] && (date[a] != 0 && date[d] != 0)) cout << "yes" << endl;
else if (d == 1 && date[a] != 0) cout << "yes" << endl;
else if (a == & && data[d] != 0) cout << "yes" << endl;
else cout << "no" << endl;
}
else {
int d; cin >> d;
if (date[d] != 0)
cout << ip - date[d] + 1 << endl;
else if (d == 1)
cout << ip << endl;
else
cout << 1 << endl;
}
}
return 0;
}
Compilation message
servers.cpp: In function 'int main()':
servers.cpp:31:35: error: lvalue required as unary '&' operand
31 | else if (a == & && data[d] != 0) cout << "yes" << endl;
| ^~~~~~~
servers.cpp:31:42: error: expected ')' before '[' token
31 | else if (a == & && data[d] != 0) cout << "yes" << endl;
| ~ ^
| )
servers.cpp:31:38: error: label 'data' used but not defined
31 | else if (a == & && data[d] != 0) cout << "yes" << endl;
| ^~~~
