#include<bits/stdc++.h>
using namespace std;
int main() {
int n, k;
string str;
cin >> n >> k >> str;
vector<vector<int>> pos(3);
vector<int> last(4, -1e9);
map<char, int> id = {{'J', 0}, {'O', 1}, {'I', 2}};
int ans = 1e9;
for(int i = 0; i < n; i++) {
last[0] = i;
int x = id[str[i]];
pos[x].emplace_back(last[x]);
if(size(pos[x]) >= k)
last[x + 1] = pos[x][size(pos[x]) - k];
ans = min(ans, i - last[3] + 1 - 3 * k);
}
if(ans > n) ans = -1;
cout << ans << "\n";
}
Compilation message
ho_t2.cpp: In function 'int main()':
ho_t2.cpp:18:6: error: 'size' was not declared in this scope
if(size(pos[x]) >= k)
^~~~
ho_t2.cpp:18:6: note: suggested alternative: 'dysize'
if(size(pos[x]) >= k)
^~~~
dysize
