이 제출은 이전 버전의 oj.uz에서 채점하였습니다. 현재는 제출 당시와는 다른 서버에서 채점을 하기 때문에, 다시 제출하면 결과가 달라질 수도 있습니다.
#include "horses.h"
#include <bits/stdc++.h>
using namespace std;
struct year{int x,y;}a[500100];
string ans,ho;
int n;
int mod(string a){
long long tmp=0,big=1000000007;
for (int i=0;i<a.length();i++){
tmp=tmp*10+int(a[i])-48;
tmp%=big;
}
return tmp;
}
string mul(string sa,int b){
long long s[10010];
s[0]=sa.length();
for (int i=0;i<s[0];i++)s[s[0]-i]=((int)(sa[i])-48)*b;
for (int i=1;i<s[0];i++){
s[i+1]+=s[i]/10;
s[i]%=10;
}
while(s[s[0]]>=10){
s[s[0]+1]=s[s[0]]/10;
s[s[0]]%=10;
s[0]++;
}
while(s[s[0]]==0&&s[0]>1)s[0]--;
string ss="";
for (int i=s[0];i>0;i--)ss+=char(s[i]+48);
return ss;
}
int init(int N, int X[], int Y[]){
n=N;
for (int i=0;i<n;i++){a[i].x=X[i];a[i].y=Y[i];}
ho="1";ans="0";
for (int i=0;i<n;i++){
ho=mul(ho,a[i].x);
string s=mul(ho,a[i].y);
if (ans<s)ans=s;
}
return mod(ans);
}
int updateX(int pos, int val) {
a[pos].x=val;
ho="1";ans="0";
for (int i=0;i<n;i++){
ho=mul(ho,a[i].x);
string s=mul(ho,a[i].y);
if (ans<s)ans=s;
}
return mod(ans);
}
int updateY(int pos, int val) {
a[pos].y=val;
ho="1";ans="0";
for (int i=0;i<n;i++){
ho=mul(ho,a[i].x);
string s=mul(ho,a[i].y);
if (ans<s)ans=s;
}
return mod(ans);
}
컴파일 시 표준 에러 (stderr) 메시지
horses.cpp: In function 'int mod(std::__cxx11::string)':
horses.cpp:7:17: warning: declaration of 'a' shadows a global declaration [-Wshadow]
int mod(string a){
^
horses.cpp:4:22: note: shadowed declaration is here
struct year{int x,y;}a[500100];
^
horses.cpp:9:19: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
for (int i=0;i<a.length();i++){
~^~~~~~~~~~~
horses.cpp:13:12: warning: conversion to 'int' from 'long long int' may alter its value [-Wconversion]
return tmp;
^~~
horses.cpp: In function 'std::__cxx11::string mul(std::__cxx11::string, int)':
horses.cpp:30:19: warning: conversion to 'int' from 'long long int' may alter its value [-Wconversion]
for (int i=s[0];i>0;i--)ss+=char(s[i]+48);
~~~^
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