#include <bits/stdc++.h>
using namespace std;
#include <bits/stdc++.h>
#include <utility>
using namespace std;
using ll = long long;
using pi = pair<int,int>;
using pl = pair<ll,ll>;
#define temp(T) template<class T>
temp(T) using V = vector<T>;
using vi = V<int>;
using vl = V<ll>;
using vvi = V<vi>;
using vpi = V<pi>;
using vb = V<bool>;
using vvb = V<vb>;
vi dx = {0,1,-1,0};
vi dy = {1,0,0,-1};
#define sz(x) x.size()
#define all(x) begin(x), end(x)
#define rall(x) rbegin(x), rend(x)
#define sor(x) sort(all(x))
#define rsz resize
#define ins insert
#define pb push_back
#define eb emplace_back
#define f first
#define s second
#define lb lower_bound
#define ub upper_bound
#define FOR(i,a,b) for (int i = (a); i < (b); ++i)
#define F0R(i,a) FOR(i,0,a)
#define ROF(i,a,b) for (int i = (b)-1; i >= (a); --i)
#define R0F(i,a) ROF(i,0,a)
#define rep(a) F0R(_,a)
#define each(a,x) for (auto& a: x)
using str = string;
const int MOD = 1e9 + 7;
const ll BIG = 1e18;
const int INF = 1e9 + 2;
temp(T) bool ckmin(T& a, const T& b) {
return b < a ? a = b, 1 : 0; } // set a = min(a,b)
temp(T) bool ckmax(T& a, const T& b) {
return a < b ? a = b, 1 : 0; } // set a = max(a,b)
void unsyncIO() { cin.tie(0)->sync_with_stdio(0); }
// FILE I/O
void setIn(str s) { freopen(s.c_str(),"r",stdin); }
void setOut(str s) { freopen(s.c_str(),"w",stdout); }
void setIO(str s = "") {
unsyncIO();
if (sz(s)) setIn(s+".in"), setOut(s+".out"); // for USACO
}
#define read(x) int x; cin >> x
temp(T) void pr(T x) {
cout << to_string(x);
}
temp(T) void prln(T x) {
cout << to_string(x) << "\n";
}
vi readV(int n) {
vi input(n);
F0R(i,n)
cin >> input[i];
return input;
}
int rand(int a, int b) {
return a + rand() % (b - a + 1);
}
#define gen(x,a,b) int x = rand(a,b)
temp(T) void moveAll(V<T> &a, V<T> &b) {
each(x,b) {
a.pb(x);
}
b.clear();
}
vi genArr(int n, int a, int b) {
vi generated(n);
F0R(i,n) {
generated[i] = rand(a,b);
}
return generated;
}
vvi genTree(int n) {
vvi g(n + 1);
F0R(i,n) {
gen(p,0,i);
g[p].pb(i + 1);
g[i + 1].pb(p);
}
return g;
}
vvb readGrid(int a, int b) {
vvb grid(a + 2, vb(b + 2, true));
F0R(i, a) {
F0R(j, b) {
bool k; cin >> k;
grid[i + 1][j + 1] = k;
}
}
return grid;
}
int main() {
setIO();
int n, q; cin >>n >> q;
V<bitset<120010>> dat(n + 1);
F0R(i, n + 1)
dat[i][i] = true;
F0R(i, q) {
char t; cin >> t;
if (t == 'S') {
int a, b; cin >> a >> b;
dat[a] = dat[b] = dat[a] | dat[b];
}
if (t == 'Q') {
int a, b; cin >> a >> b;
cout << (dat[a][b] ? "yes" : "no") << "\n";
}
if (t == 'C') {
exit(5);
}
}
return 0;
}
Compilation message
servers.cpp: In function 'void setIn(str)':
servers.cpp:59:28: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
59 | void setIn(str s) { freopen(s.c_str(),"r",stdin); }
| ~~~~~~~^~~~~~~~~~~~~~~~~~~~~
servers.cpp: In function 'void setOut(str)':
servers.cpp:60:29: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
60 | void setOut(str s) { freopen(s.c_str(),"w",stdout); }
| ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Incorrect |
14 ms |
2392 KB |
Output isn't correct |
| 2 |
Halted |
0 ms |
0 KB |
- |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Incorrect |
14 ms |
2392 KB |
Output isn't correct |
| 2 |
Halted |
0 ms |
0 KB |
- |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Incorrect |
14 ms |
2264 KB |
Output isn't correct |
| 2 |
Halted |
0 ms |
0 KB |
- |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Incorrect |
14 ms |
2264 KB |
Output isn't correct |
| 2 |
Halted |
0 ms |
0 KB |
- |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Incorrect |
14 ms |
2396 KB |
Output isn't correct |
| 2 |
Halted |
0 ms |
0 KB |
- |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Incorrect |
14 ms |
2396 KB |
Output isn't correct |
| 2 |
Halted |
0 ms |
0 KB |
- |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Incorrect |
14 ms |
2264 KB |
Output isn't correct |
| 2 |
Halted |
0 ms |
0 KB |
- |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Incorrect |
14 ms |
2264 KB |
Output isn't correct |
| 2 |
Halted |
0 ms |
0 KB |
- |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Incorrect |
16 ms |
2140 KB |
Output isn't correct |
| 2 |
Halted |
0 ms |
0 KB |
- |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Incorrect |
16 ms |
2140 KB |
Output isn't correct |
| 2 |
Halted |
0 ms |
0 KB |
- |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Incorrect |
15 ms |
2136 KB |
Output isn't correct |
| 2 |
Halted |
0 ms |
0 KB |
- |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Incorrect |
15 ms |
2136 KB |
Output isn't correct |
| 2 |
Halted |
0 ms |
0 KB |
- |
