#include <algorithm>
#include <cstdio>
#include <cstring>
#include <cmath>
#include <cstdlib>
#include <ctime>
#include <vector>
#include <iostream>
#include <map>
#include <set>
#include <queue>
#define PB push_back
#define MP make_pair
#define X first
#define Y second
using namespace std;
typedef long long ll;
typedef pair < int, int> pii;
typedef pair < ll, ll> pll;
typedef vector < int > vi;
typedef vector < ll > vl;
typedef pair < pii, pii > edg;
const int N = 5e5 + 500;
const int M = 1e6 + 500;
const int INF = 0x3f3f3f3f;
const int MOD = 1e9 + 7;
const int LOG = 20;
const int OFF = (1 << LOG);
const double EPS = 1e-9;
const double PI = 3.1415926535;
int lo[N], hi[N], koji[N], pr[N], a[M], b[M], c[M], a2[N], b2[N], n, q, m;
vector < edg > v;
int par(int x){
if(x == pr[x]) return x;
return pr[x] = par(pr[x]);
}
void mrg(int x,int y){
x = par(x), y = par(y);
pr[x] = y;
}
void iterrate(){
for(int i = 1;i<=n;i++) pr[i] = i;
vector < edg > qq;
for(int i = 1;i<=q;i++){
if(lo[i] == hi[i]) continue;
qq.PB({{(lo[i] + hi[i] + 1) / 2, i}, {a2[i], b2[i]}});
}
sort(qq.begin(), qq.end());
int j = 0;
for(int i = 0;i<v.size();i++){
while(j < qq.size() && v[i].X.X > qq[j].X.X){
if(par(qq[j].Y.X) != par(qq[j].Y.Y)){
lo[qq[j].X.Y] = qq[j].X.X;
}
else{
hi[qq[j].X.Y] = qq[j].X.X - 1;
}
j++;
}
mrg(v[i].Y.X, v[i].Y.Y);
}
while(j < qq.size()){
if(par(qq[j].Y.X) != par(qq[j].Y.Y)){
lo[qq[j].X.Y] = qq[j].X.X;
}
else{
hi[qq[j].X.Y] = qq[j].X.X - 1;
}
j++;
}
}
int main(){
scanf("%d%d%d",&n,&m, &q);
for(int i = 1;i<=q;i++){
scanf("%d%d", a2 + i, b2 + i);
lo[i] = 0, hi[i] = N;
}
int cr = 0;
for(int i = 1;i<=m;i++){
for(int j = 2 * i;j <= n;j += i){
a[cr] = i;b[cr] = j;c[cr] = m - i + 1;
cr++;
}
}
m = cr;
for(int i = 0;i<m;i++){
v.PB({{c[i], INF}, {a[i], b[i]}});
}
sort(v.begin(), v.end());
for(int i = 0;i<20;i++) iterrate();
ll sol = 0;
for(int i = 1;i<=q;i++){
printf("%d\n", lo[i] + 1);
}
return 0;
}
Compilation message
pictionary.cpp: In function 'void iterrate()':
pictionary.cpp:59:20: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
for(int i = 0;i<v.size();i++){
~^~~~~~~~~
pictionary.cpp:60:17: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
while(j < qq.size() && v[i].X.X > qq[j].X.X){
~~^~~~~~~~~~~
pictionary.cpp:71:12: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
while(j < qq.size()){
~~^~~~~~~~~~~
pictionary.cpp: In function 'int main()':
pictionary.cpp:101:8: warning: unused variable 'sol' [-Wunused-variable]
ll sol = 0;
^~~
pictionary.cpp:83:10: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
scanf("%d%d%d",&n,&m, &q);
~~~~~^~~~~~~~~~~~~~~~~~~~
pictionary.cpp:85:14: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
scanf("%d%d", a2 + i, b2 + i);
~~~~~^~~~~~~~~~~~~~~~~~~~~~~~
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
11 ms |
796 KB |
Output is correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
33 ms |
1612 KB |
Output is correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
135 ms |
4844 KB |
Output is correct |
2 |
Correct |
127 ms |
4800 KB |
Output is correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
195 ms |
5836 KB |
Output is correct |
2 |
Correct |
179 ms |
5428 KB |
Output is correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
179 ms |
8788 KB |
Output is correct |
2 |
Correct |
177 ms |
8604 KB |
Output is correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
229 ms |
13024 KB |
Output is correct |
2 |
Correct |
251 ms |
12636 KB |
Output is correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
338 ms |
17488 KB |
Output is correct |
2 |
Correct |
323 ms |
16464 KB |
Output is correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
382 ms |
14800 KB |
Output is correct |
2 |
Correct |
542 ms |
26576 KB |
Output is correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
607 ms |
28392 KB |
Output is correct |
2 |
Correct |
607 ms |
31008 KB |
Output is correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
725 ms |
46908 KB |
Output is correct |
2 |
Incorrect |
801 ms |
34480 KB |
Output isn't correct |