제출 #737633

#	제출 시각UTC-0	아이디	문제	언어	결과	실행 시간	메모리
737633	2023-05-07 12:51:12	He_Huanglu	Passport (JOI23_passport)	C++17	100 / 100	925 ms	98152 KiB

passport

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#include <bits/stdc++.h>
#define ii pair<int, int>
#define fi first
#define se second
using namespace std;
const int N = 3e5 + 5;
int n, nq, d[4 * N][2], f[4 * N], id[N];
bool ok[4 * N];
vector <ii> ke[4 * N];
void build(int i, int l, int r) {
    if(l == r) {
        id[l] = i;
        ok[i] = 1;
        return ;
    }
    int mid = l + r >> 1;
    build(i << 1, l, mid);
    build(i << 1 | 1, mid + 1, r);
    ke[i << 1].push_back({i, 0});
    ke[i << 1 | 1].push_back({i, 0});
}
void join(int x, int i, int l, int r, int u, int v) {
    if(l > v || u > r) return ;
    if(u <= l && r <= v) {
        if(id[x] != i) ke[i].push_back({id[x], 1});
        return ;
    }
 
 
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컴파일 시 표준 에러 (stderr) 메시지

passport.cpp: In function 'void build(int, int, int)':
passport.cpp:18:17: warning: suggest parentheses around '+' inside '>>' [-Wparentheses]
   18 |     int mid = l + r >> 1;
      |               ~~^~~
passport.cpp: In function 'void join(int, int, int, int, int, int)':
passport.cpp:31:17: warning: suggest parentheses around '+' inside '>>' [-Wparentheses]
   31 |     int mid = l + r >> 1;
      |               ~~^~~
passport.cpp: At global scope:
passport.cpp:51:1: warning: ISO C++ forbids declaration of 'main' with no type [-Wreturn-type]
   51 | main () {
      | ^~~~
passport.cpp: In function 'int main()':
passport.cpp:54:16: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   54 |         freopen("task.inp", "r", stdin);
      |         ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~
passport.cpp:55:16: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   55 |         freopen("wa.out", "w", stdout);
      |         ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~

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