oj.uz

답안 #30824

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
30824 2017-07-27T09:05:21 Z inqr 말 (IOI15_horses) C++14
100 / 100
 1256 ms 76264 KB 
#include "horses.h"
#include <bits/stdc++.h>
using namespace std;
#define maxn 500005
#define pdl pair<double,long long>
#define mod (long long)1000000007
#define ll long long
int n;
long long a[maxn];
long long b[maxn];
pdl tree[maxn*4];
pdl lazy[maxn*4];
 
pdl fus(pdl x,pdl y) {
    return {x.first+y.first,(x.second*y.second+mod)%mod};// 
}
/*
long long inv(long long value){
    if(value == 1) return 1;
    long long tmp = (inv(mod%value)*((-mod)/value));
    tmp %= mod;
    if(tmp < 0) tmp += mod;
    return tmp;
}
*/
ll inv(ll base){
    ll res=1;
    ll exp=mod-2;
    while(exp>0){
        if(exp&1){
            res*=base;
            res%=mod;
        }
        base*=base;
        base%=mod;
        exp/=2;
    }
    return res;
}
 
void upd(int now,int l,int r) {
    tree[now] = fus(tree[now],lazy[now]);
    if(l!=r) {
        lazy[now<<1] = fus(lazy[now<<1],lazy[now]);
        lazy[now<<1|1] = fus(lazy[now<<1|1],lazy[now]);
    }
    lazy[now] = {0,1};
}
 
void update(int now,int l,int r,int x,int y,double val1,long long val2) {
    upd(now,l,r);
    if(l>r || l>y || r<x) return ;
    if(x<=l && r<=y) {
        lazy[now] = {val1,val2};
        upd(now,l,r);
        return ;
    }
    int mid = (l+r)/2;
    update(now<<1,l,mid,x,y,val1,val2); update(now<<1|1,mid+1,r,x,y,val1,val2);
    tree[now] = max(tree[now<<1],tree[now<<1|1]);
}
 
void build(int now,int l,int r) {
    if(l==r) {
        tree[now] = lazy[now] = {0,1}; // 0 o zamana kadarki carpim sayisi
        return ;
    }
    int mid = (l+r)/2;
    build(now<<1,l,mid); build(now<<1|1,mid+1,r);
    tree[now] = lazy[now] = {0,1};
}
 
int init(int N, int X[], int Y[]) {
    n = N;
    for(int i=0;i<n;i++) a[i] = X[i], b[i] = Y[i];
    build(1,0,n-1);
    for(int i=0;i<n;i++) update(1,0,n-1,i,n-1,(double)log2(a[i]),a[i]);// pos ta a dan oncekilerini carpimini tututyor
    for(int i=0;i<n;i++) update(1,0,n-1,i,i,(double)log2(b[i]),b[i]);
	return tree[1].second;// tree nin baslangicinin secondu her zaman cevabi donuyor
}
 
int updateX(int pos, int val) {
    update(1,0,n-1,pos,n-1,-(double)log2(a[pos]),inv(a[pos]));// ilk basta pos dan oncekilerdekilerde posun etkisini kaldiriyor
    a[pos] = val; // posu degistiriyor
	update(1,0,n-1,pos,n-1,(double)log2(a[pos]),a[pos]); // pos a kadar olanlari yeniden guncelliyor
	return tree[1].second;
}
int updateY(int pos, int val) {
    update(1,0,n-1,pos,pos,-(double)log2(b[pos]),inv(b[pos])); // pos takilerinin etkisini kaldiriyor
    b[pos] = val; // pos degisiriyor
	update(1,0,n-1,pos,pos,(double)log2(b[pos]),b[pos]); // pos takilerin degeri
	return tree[1].second;
}

Compilation message

horses.cpp: In function 'int init(int, int*, int*)':
horses.cpp:79:17: warning: conversion to 'int' from 'long long int' may alter its value [-Wconversion]
  return tree[1].second;// tree nin baslangicinin secondu her zaman cevabi donuyor
                 ^
horses.cpp: In function 'int updateX(int, int)':
horses.cpp:86:17: warning: conversion to 'int' from 'long long int' may alter its value [-Wconversion]
  return tree[1].second;
                 ^
horses.cpp: In function 'int updateY(int, int)':
horses.cpp:92:17: warning: conversion to 'int' from 'long long int' may alter its value [-Wconversion]
  return tree[1].second;
                 ^

Subtask #1
17.0 / 17.0

# 결과 실행 시간 메모리 Grader output
1 Correct 0 ms 72352 KB Output is correct
2 Correct 0 ms 72352 KB Output is correct
3 Correct 0 ms 72352 KB Output is correct
4 Correct 0 ms 72352 KB Output is correct
5 Correct 0 ms 72352 KB Output is correct
6 Correct 0 ms 72352 KB Output is correct
7 Correct 0 ms 72352 KB Output is correct
8 Correct 0 ms 72352 KB Output is correct
9 Correct 0 ms 72352 KB Output is correct
10 Correct 0 ms 72352 KB Output is correct
11 Correct 0 ms 72352 KB Output is correct
12 Correct 0 ms 72352 KB Output is correct
13 Correct 0 ms 72352 KB Output is correct
14 Correct 0 ms 72352 KB Output is correct
15 Correct 0 ms 72352 KB Output is correct
16 Correct 0 ms 72352 KB Output is correct
17 Correct 0 ms 72352 KB Output is correct
18 Correct 0 ms 72352 KB Output is correct
19 Correct 0 ms 72352 KB Output is correct
20 Correct 0 ms 72352 KB Output is correct

Subtask #2
17.0 / 17.0

# 결과 실행 시간 메모리 Grader output
1 Correct 0 ms 72352 KB Output is correct
2 Correct 0 ms 72352 KB Output is correct
3 Correct 0 ms 72352 KB Output is correct
4 Correct 0 ms 72352 KB Output is correct
5 Correct 0 ms 72352 KB Output is correct
6 Correct 0 ms 72352 KB Output is correct
7 Correct 0 ms 72352 KB Output is correct
8 Correct 0 ms 72352 KB Output is correct
9 Correct 0 ms 72352 KB Output is correct
10 Correct 0 ms 72352 KB Output is correct
11 Correct 0 ms 72352 KB Output is correct
12 Correct 0 ms 72352 KB Output is correct
13 Correct 0 ms 72352 KB Output is correct
14 Correct 0 ms 72352 KB Output is correct
15 Correct 0 ms 72352 KB Output is correct
16 Correct 0 ms 72352 KB Output is correct
17 Correct 0 ms 72352 KB Output is correct
18 Correct 0 ms 72352 KB Output is correct
19 Correct 0 ms 72352 KB Output is correct
20 Correct 0 ms 72352 KB Output is correct
21 Correct 0 ms 72352 KB Output is correct
22 Correct 0 ms 72352 KB Output is correct
23 Correct 3 ms 72352 KB Output is correct
24 Correct 3 ms 72352 KB Output is correct
25 Correct 3 ms 72352 KB Output is correct
26 Correct 0 ms 72352 KB Output is correct
27 Correct 0 ms 72352 KB Output is correct
28 Correct 3 ms 72352 KB Output is correct
29 Correct 3 ms 72352 KB Output is correct
30 Correct 3 ms 72352 KB Output is correct
31 Correct 3 ms 72352 KB Output is correct
32 Correct 0 ms 72352 KB Output is correct

Subtask #3
20.0 / 20.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1053 ms 76264 KB Output is correct
2 Correct 1123 ms 76264 KB Output is correct
3 Correct 1126 ms 76264 KB Output is correct
4 Correct 1103 ms 76264 KB Output is correct

Subtask #4
23.0 / 23.0

# 결과 실행 시간 메모리 Grader output
1 Correct 0 ms 72352 KB Output is correct
2 Correct 0 ms 72352 KB Output is correct
3 Correct 0 ms 72352 KB Output is correct
4 Correct 0 ms 72352 KB Output is correct
5 Correct 0 ms 72352 KB Output is correct
6 Correct 0 ms 72352 KB Output is correct
7 Correct 0 ms 72352 KB Output is correct
8 Correct 0 ms 72352 KB Output is correct
9 Correct 0 ms 72352 KB Output is correct
10 Correct 0 ms 72352 KB Output is correct
11 Correct 0 ms 72352 KB Output is correct
12 Correct 0 ms 72352 KB Output is correct
13 Correct 0 ms 72352 KB Output is correct
14 Correct 0 ms 72352 KB Output is correct
15 Correct 0 ms 72352 KB Output is correct
16 Correct 0 ms 72352 KB Output is correct
17 Correct 0 ms 72352 KB Output is correct
18 Correct 0 ms 72352 KB Output is correct
19 Correct 0 ms 72352 KB Output is correct
20 Correct 0 ms 72352 KB Output is correct
21 Correct 0 ms 72352 KB Output is correct
22 Correct 0 ms 72352 KB Output is correct
23 Correct 0 ms 72352 KB Output is correct
24 Correct 0 ms 72352 KB Output is correct
25 Correct 0 ms 72352 KB Output is correct
26 Correct 0 ms 72352 KB Output is correct
27 Correct 0 ms 72352 KB Output is correct
28 Correct 0 ms 72352 KB Output is correct
29 Correct 0 ms 72352 KB Output is correct
30 Correct 0 ms 72352 KB Output is correct
31 Correct 0 ms 72352 KB Output is correct
32 Correct 0 ms 72352 KB Output is correct
33 Correct 776 ms 76264 KB Output is correct
34 Correct 796 ms 76264 KB Output is correct
35 Correct 786 ms 76264 KB Output is correct
36 Correct 763 ms 76264 KB Output is correct
37 Correct 799 ms 76264 KB Output is correct
38 Correct 846 ms 76264 KB Output is correct
39 Correct 849 ms 76264 KB Output is correct
40 Correct 873 ms 76264 KB Output is correct
41 Correct 843 ms 76264 KB Output is correct
42 Correct 829 ms 76264 KB Output is correct
43 Correct 883 ms 76264 KB Output is correct
44 Correct 859 ms 76264 KB Output is correct

Subtask #5
23.0 / 23.0

# 결과 실행 시간 메모리 Grader output
1 Correct 0 ms 72352 KB Output is correct
2 Correct 0 ms 72352 KB Output is correct
3 Correct 0 ms 72352 KB Output is correct
4 Correct 0 ms 72352 KB Output is correct
5 Correct 0 ms 72352 KB Output is correct
6 Correct 0 ms 72352 KB Output is correct
7 Correct 0 ms 72352 KB Output is correct
8 Correct 0 ms 72352 KB Output is correct
9 Correct 0 ms 72352 KB Output is correct
10 Correct 0 ms 72352 KB Output is correct
11 Correct 0 ms 72352 KB Output is correct
12 Correct 0 ms 72352 KB Output is correct
13 Correct 0 ms 72352 KB Output is correct
14 Correct 0 ms 72352 KB Output is correct
15 Correct 0 ms 72352 KB Output is correct
16 Correct 0 ms 72352 KB Output is correct
17 Correct 0 ms 72352 KB Output is correct
18 Correct 0 ms 72352 KB Output is correct
19 Correct 0 ms 72352 KB Output is correct
20 Correct 0 ms 72352 KB Output is correct
21 Correct 0 ms 72352 KB Output is correct
22 Correct 0 ms 72352 KB Output is correct
23 Correct 0 ms 72352 KB Output is correct
24 Correct 0 ms 72352 KB Output is correct
25 Correct 0 ms 72352 KB Output is correct
26 Correct 3 ms 72352 KB Output is correct
27 Correct 0 ms 72352 KB Output is correct
28 Correct 3 ms 72352 KB Output is correct
29 Correct 0 ms 72352 KB Output is correct
30 Correct 3 ms 72352 KB Output is correct
31 Correct 3 ms 72352 KB Output is correct
32 Correct 0 ms 72352 KB Output is correct
33 Correct 1056 ms 76264 KB Output is correct
34 Correct 1093 ms 76264 KB Output is correct
35 Correct 1153 ms 76264 KB Output is correct
36 Correct 1159 ms 76264 KB Output is correct
37 Correct 893 ms 76264 KB Output is correct
38 Correct 863 ms 76264 KB Output is correct
39 Correct 843 ms 76264 KB Output is correct
40 Correct 893 ms 76264 KB Output is correct
41 Correct 843 ms 76264 KB Output is correct
42 Correct 856 ms 76264 KB Output is correct
43 Correct 873 ms 76264 KB Output is correct
44 Correct 796 ms 76264 KB Output is correct
45 Correct 803 ms 76264 KB Output is correct
46 Correct 809 ms 76264 KB Output is correct
47 Correct 829 ms 76264 KB Output is correct
48 Correct 793 ms 76264 KB Output is correct
49 Correct 1256 ms 76264 KB Output is correct
50 Correct 1196 ms 76264 KB Output is correct
51 Correct 996 ms 76264 KB Output is correct
52 Correct 996 ms 76264 KB Output is correct
53 Correct 1213 ms 76264 KB Output is correct
54 Correct 986 ms 76264 KB Output is correct
55 Correct 906 ms 76264 KB Output is correct
56 Correct 959 ms 76264 KB Output is correct
57 Correct 973 ms 76264 KB Output is correct
58 Correct 1053 ms 76264 KB Output is correct
59 Correct 873 ms 76264 KB Output is correct