제출 #995278

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
995278		cpdreamer	Election (BOI18_election)	C++14	0 / 100	5 ms	348 KiB

election

#include <bits/stdc++.h>
#include <ext/pb_ds/assoc_container.hpp>
#include <utility>
using namespace __gnu_pbds;
using namespace std;

typedef tree<int,null_type,less<int>,rb_tree_tag,
        tree_order_statistics_node_update> indexed_set;
const int max_n=INT_MAX;
typedef long long  ll;
#define LLM LONG_LONG_MAX
#define pb push_back
#define F first
#define L length()
#define all(v) v.begin(),v.end()
#define V vector
#define S second
const long long MOD = 1000000007; // 1e9 + 7

void file(){
    freopen("input.txt.txt","r",stdin);
    freopen("output.txt.txt","w",stdout);
}
void setio(string s) {
    freopen((s + ".in").c_str(), "r", stdin);
    freopen((s + ".out").c_str(), "w", stdout);
}

struct computer{
    int c;
    int p;
    int v;
};
bool sorted(computer a,computer b){
    return a.p<b.p;
}
void solve(){
    int n;
    cin>>n;
    string s;
    cin>>s;
    int q;
    cin>>q;
    while(q--){
        int l,r;
        cin>>l>>r;
        l--,r--;
        int count_1=0;
        int count_2=0;
        int state=0;
        for(int i=l;i<=r;i++){
            if(s[i]=='C')
                state++;
            else{
                if(state==0)
                    count_1++;
                else
                    state--;
            }
        }
        state=0;
        for(int i=r;i>=l;i--){
            if(s[i]=='C')
                state++;
            else{
                if(state==0)
                    count_2++;
                else
                    state--;
            }
        }
        cout<<max(count_1,count_2)<<endl;
    }
}
int main() {
    ios_base::sync_with_stdio(false);
    cin.tie(NULL);
    cout.tie(NULL);
    //file();
    solve();
    return 0;
}

컴파일 시 표준 에러 (stderr) 메시지

election.cpp: In function 'void file()':
election.cpp:21:12: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   21 |     freopen("input.txt.txt","r",stdin);
      |     ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~
election.cpp:22:12: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   22 |     freopen("output.txt.txt","w",stdout);
      |     ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~
election.cpp: In function 'void setio(std::string)':
election.cpp:25:12: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   25 |     freopen((s + ".in").c_str(), "r", stdin);
      |     ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
election.cpp:26:12: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   26 |     freopen((s + ".out").c_str(), "w", stdout);
      |     ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

• Subtask 1: 0 / 28
• Subtask 2: 0 / 54
• Subtask 3: 0 / 18