Submission #929054

#	Time	Username	Problem	Language	Result	Execution time	Memory
929054		OAleksa	Horses (IOI15_horses)	C++14	17 / 100	1520 ms	10424 KiB

horses

#include "horses.h"
#include <bits/stdc++.h>
using namespace std;
const int mod = 1e9 + 7;
const int N = 5e5 + 69;
int n, a[N], b[N];
int mul(int a, int b) {
   long long r = 1ll * a * b;
   if (r >= mod)
      r %= mod;
   return r;
}
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];
   long long ans = 0, x = 1;
   for (int i = 0;i < n;i++) {
      x *= a[i];
      ans = max(ans, x * b[i]);
   }
   return ans % mod;
}

int updateX(int pos, int val) {
   a[pos] = val;
	long long ans = 0, x = 1;
   for (int i = 0;i < n;i++) {
      x *= a[i];
      ans = max(ans, x * b[i]);
   }
   return ans % mod;
}

int updateY(int pos, int val) {
	b[pos] = val;
	long long ans = 0, x = 1;
   for (int i = 0;i < n;i++) {
      x *= a[i];
      ans = max(ans, x * b[i]);
   }
   return ans % mod;
}

Compilation message (stderr)

horses.cpp: In function 'int mul(int, int)':
horses.cpp:7:20: warning: declaration of 'b' shadows a global declaration [-Wshadow]
    7 | int mul(int a, int b) {
      |                ~~~~^
horses.cpp:6:14: note: shadowed declaration is here
    6 | int n, a[N], b[N];
      |              ^
horses.cpp:7:13: warning: declaration of 'a' shadows a global declaration [-Wshadow]
    7 | int mul(int a, int b) {
      |         ~~~~^
horses.cpp:6:8: note: shadowed declaration is here
    6 | int n, a[N], b[N];
      |        ^
horses.cpp:11:11: warning: conversion from 'long long int' to 'int' may change value [-Wconversion]
   11 |    return r;
      |           ^
horses.cpp: In function 'int init(int, int*, int*)':
horses.cpp:13:14: warning: declaration of 'N' shadows a global declaration [-Wshadow]
   13 | int init(int N, int X[], int Y[]) {
      |          ~~~~^
horses.cpp:5:11: note: shadowed declaration is here
    5 | const int N = 5e5 + 69;
      |           ^
horses.cpp:22:15: warning: conversion from 'long long int' to 'int' may change value [-Wconversion]
   22 |    return ans % mod;
      |           ~~~~^~~~~
horses.cpp: In function 'int updateX(int, int)':
horses.cpp:32:15: warning: conversion from 'long long int' to 'int' may change value [-Wconversion]
   32 |    return ans % mod;
      |           ~~~~^~~~~
horses.cpp: In function 'int updateY(int, int)':
horses.cpp:42:15: warning: conversion from 'long long int' to 'int' may change value [-Wconversion]
   42 |    return ans % mod;
      |           ~~~~^~~~~

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