제출 #857318

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
857318		Huseyn123	말 (IOI15_horses)	C++17	17 / 100	147 ms	34908 KiB

horses

#include <bits/stdc++.h>
#include "horses.h"
#define MAX 1000001
#define INF LLONG_MAX
#define MOD 1000000007
#define mp make_pair
#define mt make_tuple
#define pb push_back
#define ins insert
#define ff first
#define ss second
#define gett(x,m) get<m>(x)
#define all(a) a.begin(),a.end()
#define lb(a,b) lower_bound(all(a),b)
#define ub(a,b) upper_bound(all(a),b)
#define sortv(a) sort(all(a))
#define sorta(a,sz) sort(a,a+sz)
#define inputar(a,b){\
    for(int i=0;i<b;i++){\
        cin >> a[i];\
    }\
}
#define inputvec(a,b){\
    for(int i=0;i<b;i++){\
        ll num;\
        cin >> num;\
        a.pb(num);\
    }\
}
#define outputar(a,b){\
    for(int i=0;i<b;i++){\
        cout << a[i] << " ";\
    }\
    cout << "\n";\
}
#define outputvec(a){\
    for(auto x:a){\
        cout << x << " ";\
    }\
    cout << "\n";\
}
#define reset(a,n,v){\
    for(int i=0;i<n;i++){\
        a[i]=v;\
    }\
}
using namespace std;
typedef long long ll;
typedef unsigned long long ull;
typedef tuple<ll,ll,ll> tll;
typedef pair<ll,ll> pll;
typedef pair<int,int> pii;
typedef double db;
typedef long double ldb;
struct segtree{
    vector<ll> maxs;
    vector<ll> lazy;
    int size;
    void init(int n){
        size=1;
        while(size<n){
            size*=2;
        }
        maxs.assign(2*size,0LL);
        lazy.assign(2*size,1LL);
    }
    void build(int x,int lx,int rx,vector<ll> &a){
        if(rx-lx==1){
            if(lx<(int)a.size()){
                maxs[x]=a[lx];
            }
            return;
        }
        int m=(lx+rx)/2;
        build(2*x+1,lx,m,a);
        build(2*x+2,m,rx,a);
        maxs[x]=max(maxs[2*x+1],maxs[2*x+2]);
    }
    void build(vector<ll> &a){
        build(0,0,size,a);
    }
    void propogate(int x,int lx,int rx){
        if(rx-lx==1){
            return;
        }
        maxs[2*x+1]*=lazy[x];
        maxs[2*x+1]%=MOD;
        maxs[2*x+2]*=lazy[x];
        maxs[2*x+2]%=MOD;
        lazy[2*x+1]*=lazy[x];
        lazy[2*x+1]%=MOD;
        lazy[2*x+2]*=lazy[x];
        lazy[2*x+2]%=MOD;
        lazy[x]=1;
    }
    void upd(int x,int lx,int rx,int l,int r,int v){
        propogate(x,lx,rx);
        if(rx<=l || lx>=r){
            return;
        }
        if(lx>=l && rx<=r){
            maxs[x]*=v;
            maxs[x]%=MOD;
            lazy[x]*=v;
            lazy[x]%=MOD;
            return;
        }
        int m=(lx+rx)/2;
        upd(2*x+1,lx,m,l,r,v);
        upd(2*x+2,m,rx,l,r,v);
        maxs[x]=max(maxs[2*x+1],maxs[2*x+2]);
    }
    void upd(int l,int r,int v){
        return upd(0,0,size,l,r,v);
    }
    ll get(int x,int lx,int rx,int l,int r){
        propogate(x,lx,rx);
        if(rx<=l || lx>=r){
            return 0;
        }
        if(lx>=l && rx<=r){
            return maxs[x];
        }
        int m=(lx+rx)/2;
        ll s1,s2;
        s1=get(2*x+1,lx,m,l,r);
        s2=get(2*x+2,m,rx,l,r);
        return max(s1,s2);
    }
    ll get(int l,int r){
        return get(0,0,size,l,r);
    }
};
ll powmod(ll x,ll y,ll md){
    if(y==0){
        return 1;
    }
    x%=md;
    if(x==0){
        return 0;
    }
    ll res=1;
    while(y>0){
        if(y%2){
            res*=x;
            res%=md;
        }
        y/=2;
        x*=x;
        x%=md;
    }
    return res;
}
ll inv(ll n,ll md){
    return powmod(n,md-2,md);
}
ll X1[MAX],Y1[MAX],n;
segtree st;
int init(int N, int X[], int Y[]) {
	n=N;
	for(int i=0;i<N;i++){
		X1[i]=X[i]; 
		Y1[i]=Y[i];
	}
	st.init(N);
	vector<ll> a(N); 
	ll h=1;
	for(int i=0;i<N;i++){
		h*=X1[i]; 
		h%=MOD; 
		a[i]=(h*Y1[i])%MOD;
	}
	st.build(a);
	int res1=st.get(0,n); 
	return res1;
}
int updateX(int pos, int val) {	
	st.upd(pos,n,inv(X1[pos],MOD));
	st.upd(pos,n,val); 
	X1[pos]=val;
	int res1=st.get(0,n);
	return res1;
}

int updateY(int pos, int val) {
	st.upd(pos,pos+1,inv(Y1[pos],MOD));
	st.upd(pos,pos+1,val);
	Y1[pos]=val;
	int res1=st.get(0,n);
	return res1;
}

컴파일 시 표준 에러 (stderr) 메시지

horses.cpp: In function 'int init(int, int*, int*)':
horses.cpp:174:20: warning: conversion from 'll' {aka 'long long int'} to 'int' may change value [-Wconversion]
  174 |  int res1=st.get(0,n);
      |                    ^
horses.cpp:174:17: warning: conversion from 'll' {aka 'long long int'} to 'int' may change value [-Wconversion]
  174 |  int res1=st.get(0,n);
      |           ~~~~~~^~~~~
horses.cpp: In function 'int updateX(int, int)':
horses.cpp:178:13: warning: conversion from 'll' {aka 'long long int'} to 'int' may change value [-Wconversion]
  178 |  st.upd(pos,n,inv(X1[pos],MOD));
      |             ^
horses.cpp:178:18: warning: conversion from 'll' {aka 'long long int'} to 'int' may change value [-Wconversion]
  178 |  st.upd(pos,n,inv(X1[pos],MOD));
      |               ~~~^~~~~~~~~~~~~
horses.cpp:179:13: warning: conversion from 'll' {aka 'long long int'} to 'int' may change value [-Wconversion]
  179 |  st.upd(pos,n,val);
      |             ^
horses.cpp:181:20: warning: conversion from 'll' {aka 'long long int'} to 'int' may change value [-Wconversion]
  181 |  int res1=st.get(0,n);
      |                    ^
horses.cpp:181:17: warning: conversion from 'll' {aka 'long long int'} to 'int' may change value [-Wconversion]
  181 |  int res1=st.get(0,n);
      |           ~~~~~~^~~~~
horses.cpp: In function 'int updateY(int, int)':
horses.cpp:186:22: warning: conversion from 'll' {aka 'long long int'} to 'int' may change value [-Wconversion]
  186 |  st.upd(pos,pos+1,inv(Y1[pos],MOD));
      |                   ~~~^~~~~~~~~~~~~
horses.cpp:189:20: warning: conversion from 'll' {aka 'long long int'} to 'int' may change value [-Wconversion]
  189 |  int res1=st.get(0,n);
      |                    ^
horses.cpp:189:17: warning: conversion from 'll' {aka 'long long int'} to 'int' may change value [-Wconversion]
  189 |  int res1=st.get(0,n);
      |           ~~~~~~^~~~~

• Subtask 1: 17 / 17
• Subtask 2: 0 / 17
• Subtask 3: 0 / 20
• Subtask 4: 0 / 23
• Subtask 5: 0 / 23