제출 #730254

#	제출 시각UTC-0	아이디	문제	언어	결과	실행 시간	메모리
730254	2023-04-25 14:06:15	nguyentunglam	Election (BOI18_election)	C++17	100 / 100	834 ms	121952 KiB

election

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#include<bits/stdc++.h>
#define fi first
#define se second
#define endl "\n"
#define ii pair<int, int>
using namespace std;
const int N = 5e5 + 10;
int a[N], b[N], s[N], last[N << 1], S[20][N], f[20][N], g[20][N], lg[N];
int get(int l, int r) {
    int k = lg[r - l + 1];
    return max(S[k][l], S[k][r - (1 << k) + 1]);
}
int main() {
    #define task ""
    cin.tie(0) -> sync_with_stdio(0);
    if (fopen ("task.inp", "r")) {
        freopen ("task.inp", "r", stdin);
        freopen ("task.out", "w", stdout);
    }
    if (fopen (task".inp", "r")) {
        freopen (task".inp", "r", stdin);
        freopen (task".out", "w", stdout);
    }
    int n; cin >> n;
    string str; cin >> str; str = " " + str;
    for(int i = 2; i <= n; i++) lg[i] = lg[i / 2] + 1;
    for(int i = 1; i <= n; i++) {
        a[i] = str[i] == 'C' ? 1 : -1;
        s[i] = s[i - 1] + a[i];
 
 
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컴파일 시 표준 에러 (stderr) 메시지

election.cpp: In function 'int main()':
election.cpp:17:17: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   17 |         freopen ("task.inp", "r", stdin);
      |         ~~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~
election.cpp:18:17: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   18 |         freopen ("task.out", "w", stdout);
      |         ~~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~
election.cpp:21:17: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   21 |         freopen (task".inp", "r", stdin);
      |         ~~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~
election.cpp:22:17: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   22 |         freopen (task".out", "w", stdout);
      |         ~~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~

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