#include <bits/stdc++.h>
using namespace std;
int n, l;
vector<int> x;
map<int, int> cnt;
void init(int N, int L, vector<int> X){
n = N;
l = L;
x = X;
for(int i = 0; i < N; ++i){
++cnt[X[i]];
}
}
int greedy(){
int last = -1, ans = 0;
for(auto [x, y] : cnt){
if(!y) assert(false);
if(last < x) ++ans, last = x + l;
}
return ans;
}
int update(int i, int y){
if(!(--cnt[x[i]])) cnt.erase(cnt.find(x[i]));
x[i] = y;
++cnt[x[i]];
return greedy();
}
#ifdef LOCAL
int main(){
ios_base::sync_with_stdio(0); cin.tie(0);
init(4, 10, {10, 15, 17, 20});
cout << update(2, 16) << '\n';
cout << update(1, 25) << '\n';
cout << update(3, 35) << '\n';
cout << update(0, 38) << '\n';
cout << update(2, 0) << '\n';
return 0;
}
#endif // LOCAL
Compilation message
elephants.cpp: In function 'int greedy()':
elephants.cpp:21:14: warning: structured bindings only available with '-std=c++17' or '-std=gnu++17'
21 | for(auto [x, y] : cnt){
| ^
/usr/bin/ld: /tmp/ccLhb0Yn.o: in function `main':
grader.cpp:(.text.startup+0x27): undefined reference to `init(int, int, int*)'
collect2: error: ld returned 1 exit status
