#include <bits/stdc++.h>
#define pb push_back
#define ppb pop_back
#define lb lower_bound
#define ub upper_bound
#define all(x) (x.begin() , x.end())
#define sz(x) (x.size())
#define fre freopen("in","r",stdin); freopen("out","w",stdout);
#define fast_io ios_base::sync_with_stdio(0);cin.tie(0);cout.tie(0);
using namespace std;
typedef long long ll;
typedef pair<int,int> pii;
typedef vector<pair<int,int>> vpii;
typedef vector<int> vint;
const int MAXN = 1e5;
int prec(char op)
{
if(op == '+' or op == '-') return 1;
if(op == '*') return 2;
return 0;
}
int applyOp(int val1,int val2,char op)
{
if(op == '+') return val1 + val2;
if(op == '-') return val1 - val2;
if(op == '*') return val1 * val2;
}
int eval(string a)
{
stack<char> op;
stack<int> val;
for(int i=0;i<sz(a);i++)
{
if(a[i] == '(') op.push('(');
else if(isdigit(a[i]))
{
int num = 0;
while(i < sz(a) and isdigit(a[i]))
{
num = num*10 + (a[i]-'0');
i++;
}
val.push(num);
i--;
}
else if(a[i] == ')')
{
while(!op.empty() and op.top() != '(')
{
int val2 = val.top();
val.pop();
int val1 = val.top();
val.pop();
char opp = op.top();
op.pop();
val.push(applyOp(val1,val2,opp));
}
op.pop();
}
else
{
while(!op.empty() and prec(op.top()) >= prec(a[i]))
{
int val2 = val.top();
val.pop();
int val1 = val.top();
val.pop();
char opp = op.top();
op.pop();
val.push(applyOp(val1,val2,opp));
}
op.push(a[i]);
}
}
while(!op.empty())
{
int val2 = val.top();
val.pop();
int val1 = val.top();
val.pop();
char opp = op.top();
op.pop();
val.push(applyOp(val1,val2,opp));
}
return val.top();
}
int extract_c(string& b)
{
string a = b;
for(int i=0;i<sz(a);i++)
if(a[i] == 'x')
a[i] = '0';
return eval(a);
}
int extract_x (string& b)
{
string a = b;
for(int i=0;i<sz(a);i++)
if(a[i] == 'x')
a[i] = '1';
return eval(a) - extract_c(b);
}
string A;
int M,P;
int32_t main()
{
//fre;
fast_io;
cin >> A >> P >> M;
int cx = extract_x(A);
int cc = extract_c(A);
//cout << cx << " " << cc << endl;
for(int i=0;i<=M+1;i++)
{
if((cx*i + cc)% M == P)
{
cout << i << endl;
return 0;
}
}
}
Compilation message
slon.cpp: In function 'int eval(std::string)':
slon.cpp:36:15: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
36 | for(int i=0;i<sz(a);i++)
| ^
slon.cpp:42:12: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
42 | while(i < sz(a) and isdigit(a[i]))
| ^
slon.cpp: In function 'int extract_c(std::string&)':
slon.cpp:96:15: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
96 | for(int i=0;i<sz(a);i++)
| ^
slon.cpp: In function 'int extract_x(std::string&)':
slon.cpp:106:15: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
106 | for(int i=0;i<sz(a);i++)
| ^
slon.cpp: In function 'int applyOp(int, int, char)':
slon.cpp:30:1: warning: control reaches end of non-void function [-Wreturn-type]
30 | }
| ^
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Incorrect |
1 ms |
364 KB |
Output isn't correct |
| 2 |
Incorrect |
8 ms |
896 KB |
Output isn't correct |
| 3 |
Incorrect |
1 ms |
364 KB |
Output isn't correct |
| 4 |
Incorrect |
5 ms |
364 KB |
Output isn't correct |
| 5 |
Incorrect |
4 ms |
364 KB |
Output isn't correct |
| 6 |
Incorrect |
5 ms |
364 KB |
Output isn't correct |
| 7 |
Incorrect |
1 ms |
364 KB |
Output isn't correct |
| 8 |
Incorrect |
5 ms |
492 KB |
Output isn't correct |
| 9 |
Incorrect |
5 ms |
620 KB |
Output isn't correct |
| 10 |
Incorrect |
3 ms |
748 KB |
Output isn't correct |
