제출 #222948

#	제출 시각UTC-0	아이디	문제	언어	결과	실행 시간	메모리
222948	2020-04-14 11:55:39	ngot23	Deda (COCI17_deda)	C++11	60 / 140	1093 ms	3900 KiB

deda

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#include <bits/stdc++.h>
using namespace std;
const int N=200005;
int t[N*4], n, Q;
void update(int l, int r, int id, int u, int val) {
    if(u<l || u>r) return;
    if(l==r) {t[id]=val;return;}
    int mid=(r+l)>>1;
    update(l, mid, id*2, u, val);
    update(mid+1, r, id*2+1, u, val);
    t[id]=min(t[id*2], t[id*2+1]);
}
int get(int l, int r, int id, int u, int val) {
    if(r<u) return -1;
    if(l==r) {
        if(t[id]<=val) return l;
        return -1;
    }
    int mid = (r+l)>>1;
    if(u<=mid) {
        int x=get(l, mid, id*2, u, val);
        if(x!=-1) return x;
        int y=get(mid+1, r, id*2+1, u, val);
        if(y!=-1) return y;
    } else {
        int x=get(mid+1, r, id*2+1, u, val);
 
 
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컴파일 시 표준 에러 (stderr) 메시지

deda.cpp: In function 'int get(int, int, int, int, int)':
deda.cpp:33:1: warning: control reaches end of non-void function [-Wreturn-type]
 }
 ^
deda.cpp: In function 'int main()':
deda.cpp:37:35: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result]
     if(fopen(".inp", "r")) freopen(".inp", "r", stdin);
                            ~~~~~~~^~~~~~~~~~~~~~~~~~~~

• Subtask 1: 60 / 140