Submission #1117066

#	Time	Username	Problem	Language	Result	Execution time	Memory
1117066		Zflop	Horses (IOI15_horses)	C++14	17 / 100	1568 ms	8544 KiB

horses

#define ll long long
const int NMAX = (int)1e5 * 6;
const ll MOD = (int)1e9 + 7;
int A[NMAX],B[NMAX],n;
ll POW(ll x,int p) {
	ll res = 1;
	while (p) {
		if (p % 2) 
			res = res * x % MOD;
		p /= 2;
		x = x * x % MOD;
		}
	return res;
	}
int init(int N, int X[], int Y[]) {
	for (int i = 0; i < N;++i) {
		A[i] = X[i];
		B[i] = Y[i];
		}
	n = N;
	ll ans = X[0] * Y[0] % MOD;
	int y_ans = Y[0];
	int i_ans = 0;
	int x = X[0];
	for (int i = 1; i < N;++i) {
		x = x * X[i] % MOD;
		int x_cur = 1;
		bool ok = false;
		for (int j = i_ans + 1; j <= i;++j) {
			x_cur = x_cur * X[i];
			if (x_cur > MOD) {
				ok = true;
				}
			x_cur %= MOD;
			}	
		if (x_cur * Y[i] > y_ans) 
			ok = true;
		if (ok) {
			y_ans = Y[i];
			i_ans = i;
			ans = x * Y[i] % MOD;
			}
		}
	return ans;
}

int updateX(int pos, int val) {	
	A[pos] = val;
	return init(n,A,B);
}

int updateY(int pos, int val) {
	B[pos] = val;
	return init(n,A,B);
}

Compilation message (stderr)

horses.cpp: In function 'int init(int, int*, int*)':
horses.cpp:44:9: warning: conversion from 'long long int' to 'int' may change value [-Wconversion]
   44 |  return ans;
      |         ^~~

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