답안 #620743

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
620743	2022-08-03T08:42:42 Z	Hazem	말 (IOI15_horses)	C++14	37 / 100	100 ms	20644 KB

horses

#include <bits/stdc++.h>
#define LL long long

using namespace std;

const int M = 5e5+10;
const int MOD = 1e9+7;

LL add(LL a,LL b){
	return (a+b)%MOD;
}

LL mult(LL a,LL b){
	return (a*b)%MOD;
}

LL fastpow(LL n,LL k){

	LL ret = 1;

	while(k){

		if(k&1)ret = mult(ret,n);
		k /= 2;
		n = mult(n,n);
	}
	return ret;
}

LL divide(LL a,LL b){
	return mult(a,fastpow(b,MOD-2));
}

LL a[M],b[M],n;
LL pr = 1;

LL calc(){

	LL idx = max(1ll,n-30),cur = 1;
	for(int i=idx+1;i<=n;i++){
		
		if((cur*a[i]>b[idx])||(cur*a[i]*b[i]>b[idx]))
			idx = i,cur = 1;
		else 
			cur *= a[i];
	}

	cur = 1;
	for(int i=max(1ll,n-30);i<=idx;i++)
		cur = mult(cur,a[i]);
	
	return mult(mult(cur,pr),b[idx]);
}

int init(int N, int X[], int Y[]) {
	
	n = N;
	a[0] = 1;
	for(int i=1;i<=n;i++){
		a[i] = X[i-1];
		b[i] = Y[i-1];
		if(i<n-30)
			pr = mult(pr,a[i]);
	}

	return calc();
}

int updateX(int pos, int val) {	
	
	if(pos+1<n-30){
		pr = divide(pr,a[pos+1]);
		pr = mult(pr,val);
	}
	a[pos+1] = val;

	return calc();
}

int updateY(int pos, int val) {
	
	b[pos+1] = val;

	return calc();
}

Compilation message

horses.cpp: In function 'long long int calc()':
horses.cpp:40:15: warning: conversion from 'long long int' to 'int' may change value [-Wconversion]
   40 |  for(int i=idx+1;i<=n;i++){
      |            ~~~^~
horses.cpp:49:15: warning: conversion from 'long long int' to 'int' may change value [-Wconversion]
   49 |  for(int i=max(1ll,n-30);i<=idx;i++)
      |            ~~~^~~~~~~~~~
horses.cpp: In function 'int init(int, int*, int*)':
horses.cpp:66:13: warning: conversion from 'long long int' to 'int' may change value [-Wconversion]
   66 |  return calc();
      |         ~~~~^~
horses.cpp: In function 'int updateX(int, int)':
horses.cpp:77:13: warning: conversion from 'long long int' to 'int' may change value [-Wconversion]
   77 |  return calc();
      |         ~~~~^~
horses.cpp: In function 'int updateY(int, int)':
horses.cpp:84:13: warning: conversion from 'long long int' to 'int' may change value [-Wconversion]
   84 |  return calc();
      |         ~~~~^~

Subtask #1
17.0 / 17.0

#	결과	실행 시간	메모리	Grader output
1	Correct	1 ms	212 KB	Output is correct
2	Correct	0 ms	212 KB	Output is correct
3	Correct	1 ms	212 KB	Output is correct
4	Correct	0 ms	212 KB	Output is correct
5	Correct	0 ms	212 KB	Output is correct
6	Correct	0 ms	212 KB	Output is correct
7	Correct	0 ms	212 KB	Output is correct
8	Correct	0 ms	212 KB	Output is correct
9	Correct	0 ms	212 KB	Output is correct
10	Correct	0 ms	212 KB	Output is correct
11	Correct	0 ms	212 KB	Output is correct
12	Correct	0 ms	212 KB	Output is correct
13	Correct	0 ms	212 KB	Output is correct
14	Correct	0 ms	212 KB	Output is correct
15	Correct	0 ms	212 KB	Output is correct
16	Correct	0 ms	212 KB	Output is correct
17	Correct	0 ms	212 KB	Output is correct
18	Correct	0 ms	212 KB	Output is correct
19	Correct	0 ms	212 KB	Output is correct
20	Correct	0 ms	212 KB	Output is correct

Subtask #2
0 / 17.0

#	결과	실행 시간	메모리	Grader output
1	Correct	0 ms	212 KB	Output is correct
2	Correct	0 ms	212 KB	Output is correct
3	Correct	0 ms	212 KB	Output is correct
4	Correct	1 ms	212 KB	Output is correct
5	Correct	1 ms	212 KB	Output is correct
6	Correct	0 ms	212 KB	Output is correct
7	Correct	1 ms	212 KB	Output is correct
8	Correct	0 ms	212 KB	Output is correct
9	Correct	0 ms	212 KB	Output is correct
10	Correct	0 ms	212 KB	Output is correct
11	Correct	0 ms	212 KB	Output is correct
12	Correct	0 ms	212 KB	Output is correct
13	Correct	1 ms	212 KB	Output is correct
14	Correct	1 ms	212 KB	Output is correct
15	Correct	1 ms	212 KB	Output is correct
16	Correct	0 ms	212 KB	Output is correct
17	Correct	1 ms	212 KB	Output is correct
18	Correct	0 ms	212 KB	Output is correct
19	Correct	0 ms	212 KB	Output is correct
20	Correct	0 ms	212 KB	Output is correct
21	Correct	0 ms	212 KB	Output is correct
22	Correct	1 ms	256 KB	Output is correct
23	Incorrect	2 ms	340 KB	Output isn't correct
24	Halted	0 ms	0 KB	-

Subtask #3
20.0 / 20.0

#	결과	실행 시간	메모리	Grader output
1	Correct	41 ms	12940 KB	Output is correct
2	Correct	100 ms	13084 KB	Output is correct
3	Correct	65 ms	16732 KB	Output is correct
4	Correct	82 ms	20644 KB	Output is correct

Subtask #4
0 / 23.0

#	결과	실행 시간	메모리	Grader output
1	Correct	0 ms	212 KB	Output is correct
2	Correct	0 ms	212 KB	Output is correct
3	Correct	0 ms	212 KB	Output is correct
4	Correct	0 ms	212 KB	Output is correct
5	Correct	1 ms	212 KB	Output is correct
6	Correct	0 ms	212 KB	Output is correct
7	Correct	1 ms	212 KB	Output is correct
8	Correct	0 ms	212 KB	Output is correct
9	Correct	0 ms	212 KB	Output is correct
10	Correct	0 ms	212 KB	Output is correct
11	Correct	0 ms	212 KB	Output is correct
12	Correct	0 ms	212 KB	Output is correct
13	Correct	0 ms	212 KB	Output is correct
14	Correct	0 ms	212 KB	Output is correct
15	Correct	0 ms	212 KB	Output is correct
16	Correct	0 ms	212 KB	Output is correct
17	Correct	0 ms	212 KB	Output is correct
18	Correct	0 ms	212 KB	Output is correct
19	Correct	0 ms	212 KB	Output is correct
20	Correct	1 ms	212 KB	Output is correct
21	Correct	0 ms	212 KB	Output is correct
22	Correct	0 ms	212 KB	Output is correct
23	Incorrect	1 ms	340 KB	Output isn't correct
24	Halted	0 ms	0 KB	-

Subtask #5
0 / 23.0

#	결과	실행 시간	메모리	Grader output
1	Correct	0 ms	212 KB	Output is correct
2	Correct	0 ms	212 KB	Output is correct
3	Correct	0 ms	212 KB	Output is correct
4	Correct	1 ms	212 KB	Output is correct
5	Correct	0 ms	212 KB	Output is correct
6	Correct	0 ms	212 KB	Output is correct
7	Correct	0 ms	212 KB	Output is correct
8	Correct	0 ms	212 KB	Output is correct
9	Correct	0 ms	212 KB	Output is correct
10	Correct	0 ms	212 KB	Output is correct
11	Correct	0 ms	212 KB	Output is correct
12	Correct	0 ms	212 KB	Output is correct
13	Correct	0 ms	212 KB	Output is correct
14	Correct	0 ms	212 KB	Output is correct
15	Correct	1 ms	212 KB	Output is correct
16	Correct	1 ms	212 KB	Output is correct
17	Correct	0 ms	212 KB	Output is correct
18	Correct	0 ms	212 KB	Output is correct
19	Correct	0 ms	212 KB	Output is correct
20	Correct	0 ms	212 KB	Output is correct
21	Correct	0 ms	212 KB	Output is correct
22	Correct	0 ms	212 KB	Output is correct
23	Incorrect	1 ms	340 KB	Output isn't correct
24	Halted	0 ms	0 KB	-

답안 #620743

Compilation message

Subtask #1 17.0 / 17.0

Subtask #2 0 / 17.0

Subtask #3 20.0 / 20.0

Subtask #4 0 / 23.0

Subtask #5 0 / 23.0

Subtask #1
17.0 / 17.0

Subtask #2
0 / 17.0

Subtask #3
20.0 / 20.0

Subtask #4
0 / 23.0

Subtask #5
0 / 23.0