제출 #792077

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
792077		acatmeowmeow	말 (IOI15_horses)	C++11	34 / 100	1579 ms	15860 KiB

horses

#include "horses.h"
#include <bits/stdc++.h>

using namespace std;

#define int long long 

const int NMAX = 5e5, modulo = 1e9 + 7;
int n, x[NMAX + 5], y[NMAX + 5];

int compute() {
	int index = n - 1;
	for (int i = n - 2; i >= 0; i--) {
		int res = y[index], j = i + 1;
		while (res <= y[i] && j <= index) res *= x[j++];
		if (res <= y[i]) index = i;
	}
	int ans = 1;
	for (int i = 0; i <= index; i++) ans *= x[i], ans %= modulo;
	ans *= y[index], ans %= modulo;
	return ans;
}

signed init(signed N, signed X[], signed Y[]) {
	n = N;
	for (int i = 0; i < n; i++) x[i] = X[i], y[i] = Y[i];
	return compute();
}

signed updateX(signed pos, signed val) {	
	x[pos] = val;
	return compute();
}

signed updateY(signed pos, signed val) {
	y[pos] = val;
	return compute();
}

/*signed main() {
	//_inputFile = fopen("horses.in", "rb");
	//_outputFile = fopen("horses.out", "w");

	signed N;
	cin >> N;

	signed *X = (signed*)malloc(sizeof(signed)*(unsigned)N);
	signed *Y = (signed*)malloc(sizeof(signed)*(unsigned)N);

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

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

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

	signed M;
	cin >> M;

	for (int i = 0; i < M; i++) {
		signed type; cin >> type;
		signed pos; cin >> pos;
		signed val; cin >> val;

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

	return 0;
}*/

컴파일 시 표준 에러 (stderr) 메시지

horses.cpp: In function 'int init(int, int*, int*)':
horses.cpp:27:16: warning: conversion from 'long long int' to 'int' may change value [-Wconversion]
   27 |  return compute();
      |         ~~~~~~~^~
horses.cpp: In function 'int updateX(int, int)':
horses.cpp:32:16: warning: conversion from 'long long int' to 'int' may change value [-Wconversion]
   32 |  return compute();
      |         ~~~~~~~^~
horses.cpp: In function 'int updateY(int, int)':
horses.cpp:37:16: warning: conversion from 'long long int' to 'int' may change value [-Wconversion]
   37 |  return compute();
      |         ~~~~~~~^~

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