제출 #79941

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
79941		luckyboy	Deda (COCI17_deda)	C++14	140 / 140	193 ms	13960 KiB

deda

#include <bits/stdc++.h>
#define FOR(i, a, b) for (int i = (a); i <= (b); ++i)
#define FORD(i, a, b) for (int i = (a); i >= (b); --i)
#define pb push_back
#define mp make_pair
#define F first
#define S second
#define maxc 1000000007
#define maxn 200005
#define maxm 500005
#define pii pair <int,int>
#define Task "Deda"
using namespace std;
int n,q,t[maxn << 2],x,y;
char c;
void Update(int l,int r,int id,int x,int val)
{
    t[id] = min(t[id],val);
    if (l == r) return;
    int mid = (l+r) >> 1;
    if (mid >= x) Update(l,mid,2*id,x,val);
    else Update(mid+1,r,2*id+1,x,val);
}
int Find(int l,int r,int id,int x,int val)
{
    if (r < x) return 0;
    if (l == r) return (t[id] <= val ? l : 0);
    if (x <= l && t[id] > val) return 0;
    int mid = (l+r) >> 1;
    int temp = Find(l,mid,2*id,x,val);
    if (temp) return temp;
    return Find(mid+1,r,2*id+1,x,val);
}
int main()
{
    //freopen(Task".inp", "r",stdin);
    //freopen(Task".out", "w",stdout);
    scanf("%d%d",&n,&q);
    FOR(i,1,n << 2) t[i] = maxc;
    while (q--)
    {
        scanf("%c%c%d%d",&c,&c,&x,&y);
        if (c == 'M') Update(1,n,1,y,x);
        else
        {
            int ans = Find(1,n,1,y,x);
            if (!ans) ans = -1;
            printf("%d\n",ans);
        }
    }
    return 0;
}

컴파일 시 표준 에러 (stderr) 메시지

deda.cpp: In function 'int main()':
deda.cpp:38:10: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
     scanf("%d%d",&n,&q);
     ~~~~~^~~~~~~~~~~~~~
deda.cpp:42:14: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
         scanf("%c%c%d%d",&c,&c,&x,&y);
         ~~~~~^~~~~~~~~~~~~~~~~~~~~~~~

• Subtask 1: 140 / 140