Submission #833745

#	Time	Username	Problem	Language	Result	Execution time	Memory
833745		TB_	Horses (IOI15_horses)	C++17	0 / 100	1577 ms	14376 KiB

horses

#include <bits/stdc++.h>
using namespace std;

#define ll long long
#define INF (ll)1e9+7
#define fo(i, x) for(ll i = 0; i<x;i++)
#define pb push_back

typedef vector<ll> vl;


vl x, y;

ll eval(){
	ll ans = 0, current = 1;
	double bestLog = 0, currentLog = 0;
	int n = x.size();
	fo(i, n){
		current = (current*x[i])%(INF);
		currentLog += log10l(x[i]);
		if(currentLog+log10l(y[i]) > bestLog){
			bestLog = currentLog+log10l(y[i]);
			ans = (current*y[i])%(INF);
		}
	}
	return ans;
}

int init(int N, int X[], int Y[]) {
	fo(i, N){
		x.pb(X[i]);
		y.pb(Y[i]);
	}
	return eval();
}

int updateX(int pos, int val) {	
	x[pos] = val;
	return eval();
}

int updateY(int pos, int val) {
	y[pos] = val;
	return eval();
}



// static char _buffer[1024];
// static int _currentChar = 0;
// static int _charsNumber = 0;
// static FILE *_inputFile, *_outputFile;

// static inline int _read() {
//     if (_charsNumber < 0) {
//         exit(1);
//     }
//     if (!_charsNumber || _currentChar == _charsNumber) {
//         _charsNumber = (int)fread(_buffer, sizeof(_buffer[0]), sizeof(_buffer), _inputFile);
//         _currentChar = 0;
//     }
//     if (_charsNumber <= 0) {
//         return -1;
//     }
//     return _buffer[_currentChar++];
// }

// static inline int _readInt() {
//     int c, x, s;
//     c = _read();
//     while (c <= 32) c = _read();
//     x = 0;
//     s = 1;
//     if (c == '-') {
//         s = -1;
//         c = _read();
//     }
//     while (c > 32) {
//         x *= 10;
//         x += c - '0';
//         c = _read();
//     }
//     if (s < 0) x = -x;
//     return x;
// }


// int main() {
// 	_inputFile = fopen("horses.in", "rb");
// 	_outputFile = fopen("horses.out", "w");
	
// 	int N; N = _readInt();

// 	int *X = (int*)malloc(sizeof(int)*(unsigned int)N);
// 	int *Y = (int*)malloc(sizeof(int)*(unsigned int)N);

// 	for (int i = 0; i < N; i++) {
// 		X[i] = _readInt();
// 	}

// 	for (int i = 0; i < N; i++) {
// 		Y[i] = _readInt();
// 	}	

// 	fprintf(_outputFile,"%d\n",init(N,X,Y));

// 	int M; M = _readInt();

// 	for (int i = 0; i < M; i++) {
// 		int type; type = _readInt();
// 		int pos; pos = _readInt();
// 		int val; val = _readInt(); 

// 		if (type == 1) {
// 			fprintf(_outputFile,"%d\n",updateX(pos,val));
// 		} else if (type == 2) {
// 			fprintf(_outputFile,"%d\n",updateY(pos,val));
// 		}
// 	}

// 	return 0;
// }

Compilation message (stderr)

horses.cpp: In function 'long long int eval()':
horses.cpp:17:16: warning: conversion from 'std::vector<long long int>::size_type' {aka 'long unsigned int'} to 'int' may change value [-Wconversion]
   17 |  int n = x.size();
      |          ~~~~~~^~
horses.cpp:20:28: warning: conversion from 'long double' to 'double' may change value [-Wfloat-conversion]
   20 |   currentLog += log10l(x[i]);
      |                            ^
horses.cpp:22:24: warning: conversion from 'long double' to 'double' may change value [-Wfloat-conversion]
   22 |    bestLog = currentLog+log10l(y[i]);
      |              ~~~~~~~~~~^~~~~~~~~~~~~
horses.cpp: In function 'int init(int, int*, int*)':
horses.cpp:34:13: warning: conversion from 'long long int' to 'int' may change value [-Wconversion]
   34 |  return eval();
      |         ~~~~^~
horses.cpp: In function 'int updateX(int, int)':
horses.cpp:39:13: warning: conversion from 'long long int' to 'int' may change value [-Wconversion]
   39 |  return eval();
      |         ~~~~^~
horses.cpp: In function 'int updateY(int, int)':
horses.cpp:44:13: warning: conversion from 'long long int' to 'int' may change value [-Wconversion]
   44 |  return eval();
      |         ~~~~^~

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