| # |
Submission time |
Handle |
Problem |
Language |
Result |
Execution time |
Memory |
| 60116 |
2018-07-23T16:53:46 Z |
dukati8 |
Horses (IOI15_horses) |
C++14 |
|
1500 ms |
104996 KB |
#include "horses.h"
#include <bits/stdc++.h>
#define rep(i,a,b) for(int i=a; i<int(b); i++)
using namespace std;
int n;
long long x[500000],y[500000];
long long m=1000000000+7;
long long product;
pair<long long,long long> invgcd(long long a, long long b) {
//Returns x and y such that ax+by=1
if (a==1 && b==0) return make_pair(1,0);
long long c=a%b;
long long d=a/b;
pair<long long, long long > ans = invgcd(b,c);
return make_pair(ans.second,ans.first-ans.second*d);
}
long long inverse2(long long a) {
pair<long long, long long > ans = invgcd(m,a);
return ans.second+m;
}
long long powsmart(long long a,long long b) {
if (b==1) return a;
long long x=powsmart(a,b/2);
x=(x*x)%m;
if (b%2==0) {
return x;
}
else
return (a*x)%m;
}
long long inverse( long long a) {
//calculate a**(m-2)
return powsmart(a%m,m-2);
}
int init(int N, int X[], int Y[]) {
n=N;
rep (i,0,n) {
x[i]=X[i];
y[i]=Y[i];
}
product=1;
rep (i,0,n) {
product*=x[i];
product%=m;
}
long long hi=y[n-1];
long long divide=1;
for (int i = n-2; i>=0; i--) {
hi*=x[i+1];
hi=max(hi,y[i]);
divide*=x[i+1];
if (hi>=1000000000) break;
}
long long ans=(hi%m)*product;
ans%=m;
ans*=inverse(divide);
ans%=m;
return ans;
}
int updateX(int pos, int val) {
product*=inverse(x[pos]);
product%=m;
product*=val;
product%=m;
x[pos]=val;
long long hi=y[n-1];
long long divide=1;
for (int i = n-2; i>=0; i--) {
hi*=x[i+1];
hi=max(hi,y[i]);
divide*=x[i+1];
if (hi>=1000000000) break;
}
long long ans=(hi%m)*product;
ans%=m;
ans*=inverse(divide);
ans%=m;
return ans;
}
int updateY(int pos, int val) {
y[pos]=val;
long long hi=y[n-1];
long long divide=1;
for (int i = n-2; i>=0; i--) {
hi*=x[i+1];
hi=max(hi,y[i]);
divide*=x[i+1];
if (hi>=1000000000) break;
}
long long ans=(hi%m)*product;
ans%=m;
ans*=inverse(divide);
ans%=m;
return ans;
}
Compilation message
horses.cpp: In function 'long long int powsmart(long long int, long long int)':
horses.cpp:25:13: warning: declaration of 'x' shadows a global declaration [-Wshadow]
long long x=powsmart(a,b/2);
^
horses.cpp:7:11: note: shadowed declaration is here
long long x[500000],y[500000];
^
horses.cpp: In function 'int init(int, int*, int*)':
horses.cpp:61:9: warning: conversion to 'int' from 'long long int' may alter its value [-Wconversion]
return ans;
^~~
horses.cpp: In function 'int updateX(int, int)':
horses.cpp:85:9: warning: conversion to 'int' from 'long long int' may alter its value [-Wconversion]
return ans;
^~~
horses.cpp: In function 'int updateY(int, int)':
horses.cpp:102:9: warning: conversion to 'int' from 'long long int' may alter its value [-Wconversion]
return ans;
^~~
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
3 ms |
376 KB |
Output is correct |
| 2 |
Correct |
2 ms |
488 KB |
Output is correct |
| 3 |
Correct |
2 ms |
488 KB |
Output is correct |
| 4 |
Correct |
3 ms |
488 KB |
Output is correct |
| 5 |
Correct |
3 ms |
596 KB |
Output is correct |
| 6 |
Correct |
3 ms |
596 KB |
Output is correct |
| 7 |
Correct |
2 ms |
596 KB |
Output is correct |
| 8 |
Correct |
3 ms |
652 KB |
Output is correct |
| 9 |
Correct |
3 ms |
780 KB |
Output is correct |
| 10 |
Correct |
3 ms |
780 KB |
Output is correct |
| 11 |
Correct |
3 ms |
780 KB |
Output is correct |
| 12 |
Correct |
3 ms |
780 KB |
Output is correct |
| 13 |
Correct |
2 ms |
780 KB |
Output is correct |
| 14 |
Correct |
2 ms |
780 KB |
Output is correct |
| 15 |
Correct |
3 ms |
780 KB |
Output is correct |
| 16 |
Correct |
2 ms |
780 KB |
Output is correct |
| 17 |
Correct |
3 ms |
780 KB |
Output is correct |
| 18 |
Correct |
3 ms |
780 KB |
Output is correct |
| 19 |
Correct |
3 ms |
780 KB |
Output is correct |
| 20 |
Correct |
3 ms |
780 KB |
Output is correct |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
2 ms |
780 KB |
Output is correct |
| 2 |
Correct |
2 ms |
780 KB |
Output is correct |
| 3 |
Correct |
2 ms |
780 KB |
Output is correct |
| 4 |
Correct |
2 ms |
780 KB |
Output is correct |
| 5 |
Correct |
3 ms |
780 KB |
Output is correct |
| 6 |
Correct |
2 ms |
780 KB |
Output is correct |
| 7 |
Correct |
2 ms |
780 KB |
Output is correct |
| 8 |
Correct |
3 ms |
780 KB |
Output is correct |
| 9 |
Correct |
3 ms |
780 KB |
Output is correct |
| 10 |
Correct |
2 ms |
780 KB |
Output is correct |
| 11 |
Correct |
3 ms |
780 KB |
Output is correct |
| 12 |
Correct |
3 ms |
780 KB |
Output is correct |
| 13 |
Correct |
3 ms |
780 KB |
Output is correct |
| 14 |
Correct |
3 ms |
780 KB |
Output is correct |
| 15 |
Correct |
2 ms |
780 KB |
Output is correct |
| 16 |
Correct |
2 ms |
780 KB |
Output is correct |
| 17 |
Correct |
2 ms |
780 KB |
Output is correct |
| 18 |
Correct |
3 ms |
780 KB |
Output is correct |
| 19 |
Correct |
3 ms |
780 KB |
Output is correct |
| 20 |
Correct |
0 ms |
780 KB |
Output is correct |
| 21 |
Correct |
3 ms |
780 KB |
Output is correct |
| 22 |
Correct |
2 ms |
780 KB |
Output is correct |
| 23 |
Correct |
6 ms |
780 KB |
Output is correct |
| 24 |
Correct |
4 ms |
780 KB |
Output is correct |
| 25 |
Correct |
5 ms |
780 KB |
Output is correct |
| 26 |
Correct |
5 ms |
780 KB |
Output is correct |
| 27 |
Correct |
6 ms |
780 KB |
Output is correct |
| 28 |
Correct |
6 ms |
780 KB |
Output is correct |
| 29 |
Correct |
8 ms |
780 KB |
Output is correct |
| 30 |
Correct |
7 ms |
780 KB |
Output is correct |
| 31 |
Correct |
7 ms |
780 KB |
Output is correct |
| 32 |
Correct |
5 ms |
780 KB |
Output is correct |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
178 ms |
13372 KB |
Output is correct |
| 2 |
Correct |
260 ms |
13372 KB |
Output is correct |
| 3 |
Correct |
264 ms |
17212 KB |
Output is correct |
| 4 |
Correct |
316 ms |
24892 KB |
Output is correct |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
3 ms |
24892 KB |
Output is correct |
| 2 |
Correct |
3 ms |
24892 KB |
Output is correct |
| 3 |
Correct |
3 ms |
24892 KB |
Output is correct |
| 4 |
Correct |
3 ms |
24892 KB |
Output is correct |
| 5 |
Correct |
2 ms |
24892 KB |
Output is correct |
| 6 |
Correct |
3 ms |
24892 KB |
Output is correct |
| 7 |
Correct |
3 ms |
24892 KB |
Output is correct |
| 8 |
Correct |
3 ms |
24892 KB |
Output is correct |
| 9 |
Correct |
3 ms |
24892 KB |
Output is correct |
| 10 |
Correct |
3 ms |
24892 KB |
Output is correct |
| 11 |
Correct |
3 ms |
24892 KB |
Output is correct |
| 12 |
Correct |
3 ms |
24892 KB |
Output is correct |
| 13 |
Correct |
2 ms |
24892 KB |
Output is correct |
| 14 |
Correct |
4 ms |
24892 KB |
Output is correct |
| 15 |
Correct |
3 ms |
24892 KB |
Output is correct |
| 16 |
Correct |
3 ms |
24892 KB |
Output is correct |
| 17 |
Correct |
3 ms |
24892 KB |
Output is correct |
| 18 |
Correct |
3 ms |
24892 KB |
Output is correct |
| 19 |
Correct |
2 ms |
24892 KB |
Output is correct |
| 20 |
Correct |
3 ms |
24892 KB |
Output is correct |
| 21 |
Correct |
2 ms |
24892 KB |
Output is correct |
| 22 |
Correct |
3 ms |
24892 KB |
Output is correct |
| 23 |
Correct |
5 ms |
24892 KB |
Output is correct |
| 24 |
Correct |
5 ms |
24892 KB |
Output is correct |
| 25 |
Correct |
4 ms |
24892 KB |
Output is correct |
| 26 |
Correct |
5 ms |
24892 KB |
Output is correct |
| 27 |
Correct |
5 ms |
24892 KB |
Output is correct |
| 28 |
Correct |
5 ms |
24892 KB |
Output is correct |
| 29 |
Correct |
9 ms |
24892 KB |
Output is correct |
| 30 |
Correct |
6 ms |
24892 KB |
Output is correct |
| 31 |
Correct |
8 ms |
24892 KB |
Output is correct |
| 32 |
Correct |
5 ms |
24892 KB |
Output is correct |
| 33 |
Correct |
107 ms |
24892 KB |
Output is correct |
| 34 |
Correct |
63 ms |
27828 KB |
Output is correct |
| 35 |
Correct |
103 ms |
38792 KB |
Output is correct |
| 36 |
Correct |
96 ms |
49620 KB |
Output is correct |
| 37 |
Correct |
562 ms |
51792 KB |
Output is correct |
| 38 |
Correct |
65 ms |
54732 KB |
Output is correct |
| 39 |
Execution timed out |
1563 ms |
56608 KB |
Time limit exceeded |
| 40 |
Halted |
0 ms |
0 KB |
- |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
3 ms |
56608 KB |
Output is correct |
| 2 |
Correct |
2 ms |
56608 KB |
Output is correct |
| 3 |
Correct |
2 ms |
56608 KB |
Output is correct |
| 4 |
Correct |
3 ms |
56608 KB |
Output is correct |
| 5 |
Correct |
4 ms |
56608 KB |
Output is correct |
| 6 |
Correct |
3 ms |
56608 KB |
Output is correct |
| 7 |
Correct |
3 ms |
56608 KB |
Output is correct |
| 8 |
Correct |
2 ms |
56608 KB |
Output is correct |
| 9 |
Correct |
4 ms |
56608 KB |
Output is correct |
| 10 |
Correct |
3 ms |
56608 KB |
Output is correct |
| 11 |
Correct |
2 ms |
56608 KB |
Output is correct |
| 12 |
Correct |
3 ms |
56608 KB |
Output is correct |
| 13 |
Correct |
3 ms |
56608 KB |
Output is correct |
| 14 |
Correct |
4 ms |
56608 KB |
Output is correct |
| 15 |
Correct |
3 ms |
56608 KB |
Output is correct |
| 16 |
Correct |
1 ms |
56608 KB |
Output is correct |
| 17 |
Correct |
3 ms |
56608 KB |
Output is correct |
| 18 |
Correct |
3 ms |
56608 KB |
Output is correct |
| 19 |
Correct |
4 ms |
56608 KB |
Output is correct |
| 20 |
Correct |
3 ms |
56608 KB |
Output is correct |
| 21 |
Correct |
3 ms |
56608 KB |
Output is correct |
| 22 |
Correct |
3 ms |
56608 KB |
Output is correct |
| 23 |
Correct |
5 ms |
56608 KB |
Output is correct |
| 24 |
Correct |
6 ms |
56608 KB |
Output is correct |
| 25 |
Correct |
5 ms |
56608 KB |
Output is correct |
| 26 |
Correct |
5 ms |
56608 KB |
Output is correct |
| 27 |
Correct |
5 ms |
56608 KB |
Output is correct |
| 28 |
Correct |
5 ms |
56608 KB |
Output is correct |
| 29 |
Correct |
8 ms |
56608 KB |
Output is correct |
| 30 |
Correct |
7 ms |
56608 KB |
Output is correct |
| 31 |
Correct |
8 ms |
56608 KB |
Output is correct |
| 32 |
Correct |
5 ms |
56608 KB |
Output is correct |
| 33 |
Correct |
190 ms |
57732 KB |
Output is correct |
| 34 |
Correct |
262 ms |
57732 KB |
Output is correct |
| 35 |
Correct |
246 ms |
61600 KB |
Output is correct |
| 36 |
Correct |
324 ms |
69252 KB |
Output is correct |
| 37 |
Correct |
105 ms |
72188 KB |
Output is correct |
| 38 |
Correct |
73 ms |
76056 KB |
Output is correct |
| 39 |
Correct |
98 ms |
86996 KB |
Output is correct |
| 40 |
Correct |
99 ms |
97784 KB |
Output is correct |
| 41 |
Correct |
543 ms |
100288 KB |
Output is correct |
| 42 |
Correct |
66 ms |
103012 KB |
Output is correct |
| 43 |
Execution timed out |
1561 ms |
104996 KB |
Time limit exceeded |
| 44 |
Halted |
0 ms |
0 KB |
- |
