#include <bits/stdc++.h>
using namespace std;
int main() {
int a, b; cin >> a >> b;
int m; cin >> m;
vector<set<int>> froma(a+1), fromb(b+1);
map<pair<int, int>, int> id;
for (int i = 0; i < m; ++i){
int x, y; cin >> x >> y;
id[make_pair(x, y)] = i;
froma[x].insert(y);
fromb[y].insert(x);
}
int ans = 0;
vector<pair<int, int>> cmpa, cmpb;
vector<int> res(m);
int ca = a, cb = b;
while (ca >= 1 && cb >= 1){
if (froma[ca].empty()) {
if (cmpa.empty() || ca < cmpa.back().first) ans++;
ca--;
continue;
}
if (fromb[cb].empty()){
if (cmpb.empty() || cb < cmpb.back().first) ans++;
cb--;
continue;
}
int mxb = *froma[ca].begin();
int mxa = *fromb[cb].begin();
if (mxa == ca && mxb == cb) {
if (cmpa.empty() || ca < cmpa.back().first) ans++;
if (cmpb.empty() || cb < cmpb.back().first) ans++;
ca--, cb--;
continue;
}
int pa = ca, pb = cb;
while (ca >= mxa || cb >= mxb) {
if (ca >= mxa) {
if (!froma[ca].empty()){
mxb = *froma[ca].begin();
for (auto x : froma[ca]) fromb[x].erase(ca);
}
ca--;
}
if (cb >= mxb) {
if (!fromb[cb].empty()) {
mxa = *fromb[cb].begin(), res[id[make_pair(mxa, cb)]] = 1;
for (auto x : fromb[cb]) froma[x].erase(cb);
}
cb--;
}
}
cmpa.push_back({mxa, pa});
cmpb.push_back({mxb, pb});
}
while (ca >= 1){
if (cmpa.empty() || ca < cmpa.back().first) ans++;
ca--;
}
while (cb >= 1){
if (cmpb.empty() || cb < cmpb.back().first) ans++;
cb--;
}
ans += cmpa.size();
reverse(cmpa.begin(), cmpa.end());
reverse(cmpb.begin(), cmpb.end());
for (int i = 0; i < cmpa.size() - 1; ++i){
if (cmpa[i].second >= cmpa[i+1].first || cmpb[i].second >= cmpb[i+1].first) ans--;
}
cout << ans << "\n";
for (auto x : res) cout << x << " ";
cout << "\n";
return 0;
}
Compilation message
Main.cpp: In function 'int main()':
Main.cpp:79:23: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<int, int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
79 | for (int i = 0; i < cmpa.size() - 1; ++i){
| ~~^~~~~~~~~~~~~~~~~
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Incorrect |
1 ms |
212 KB |
Output isn't correct |
| 2 |
Halted |
0 ms |
0 KB |
- |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Incorrect |
1 ms |
212 KB |
Output isn't correct |
| 2 |
Halted |
0 ms |
0 KB |
- |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Incorrect |
1 ms |
212 KB |
Output isn't correct |
| 2 |
Halted |
0 ms |
0 KB |
- |
