제출 #831620

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
831620		nnin	JJOOII 2 (JOI20_ho_t2)	C++14	100 / 100	9 ms	2188 KiB

ho_t2

#include<bits/stdc++.h>
using namespace std;

int n, k;
string s;

int main() {
    ios_base::sync_with_stdio(false);
    cin.tie(NULL);
    cin>>n>>k>>s;
    vector<int> J, O, I;
    for(int i=0;i<n;i++) {
        if(s[i]=='J') {
            J.push_back(i);
        } else if(s[i]=='O') {
            O.push_back(i);
        } else {
            I.push_back(i);
        }
    }
    int ans = INT_MAX;
    for(int j=0;j+k-1<J.size();j++) {
        int o = upper_bound(O.begin(), O.end(), J[j+k-1])-O.begin();
        if(o+k-1>=O.size()) continue;
        int i = upper_bound(I.begin(), I.end(), O[o+k-1])-I.begin();
        if(i+k-1>=I.size()) continue;
        ans = min(ans, I[i+k-1]-J[j]+1-(3*k));
    }
    if(ans==INT_MAX) cout<<-1;
    else cout<<ans;
}

컴파일 시 표준 에러 (stderr) 메시지

ho_t2.cpp: In function 'int main()':
ho_t2.cpp:22:22: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   22 |     for(int j=0;j+k-1<J.size();j++) {
      |                 ~~~~~^~~~~~~~~
ho_t2.cpp:24:17: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   24 |         if(o+k-1>=O.size()) continue;
      |            ~~~~~^~~~~~~~~~
ho_t2.cpp:26:17: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   26 |         if(i+k-1>=I.size()) continue;
      |            ~~~~~^~~~~~~~~~

• Subtask 1: 1 / 1
• Subtask 2: 12 / 12
• Subtask 3: 87 / 87