Submission #18869848


Source Code Expand

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#include <bits/stdc++.h>
using namespace std;
typedef signed long long ll;

#define _P(...) (void)printf(__VA_ARGS__)
#define FOR(x,to) for(x=0;x<(to);x++)
#define FORR(x,arr) for(auto& x:arr)
#define FORR2(x,y,arr) for(auto& [x,y]:arr)
#define ALL(a) (a.begin()),(a.end())
#define ZERO(a) memset(a,0,sizeof(a))
#define MINUS(a) memset(a,0xff,sizeof(a))
template<class T> bool chmax(T &a, const T &b) { if(a<b){a=b;return 1;}return 0;}
template<class T> bool chmin(T &a, const T &b) { if(a>b){a=b;return 1;}return 0;}
//-------------------------------------------------------

int T;
ll N,S,K;

ll ext_gcd(ll p,ll q,ll& x, ll& y) { // get px+qy=gcd(p,q)
	if(q==0) return x=1,y=0,p;
	ll g=ext_gcd(q,p%q,y,x);
	y-=p/q*x;
	return g;
}

void solve() {
	int i,j,k,l,r,x,y; string s;
	
	cin>>T;
	while(T--) {
		cin>>N>>S>>K;
		
		ll lef=N-S;
		ll d=__gcd(K,N);
		if(lef%d) {
			cout<<-1<<endl;
		}
		else {
			lef/=d;
			N/=d;
			K/=d;
			ll X,Y;
			ll a=ext_gcd(K,N,X,Y);
			X*=lef;
			X=(X%N+N)%N;
			cout<<X<<endl;
			
		}
		
	}
}


int main(int argc,char** argv){
	string s;int i;
	if(argc==1) ios::sync_with_stdio(false), cin.tie(0);
	FOR(i,argc-1) s+=argv[i+1],s+='\n'; FOR(i,s.size()) ungetc(s[s.size()-1-i],stdin);
	cout.tie(0); solve(); return 0;
}

Submission Info

Submission Time
Task E - Throne
User kmjp
Language C++ (GCC 9.2.1)
Score 500
Code Size 1311 Byte
Status AC
Exec Time 8 ms
Memory 3660 KB

Compile Error

./Main.cpp: In function ‘void solve()’:
./Main.cpp:43:7: warning: unused variable ‘a’ [-Wunused-variable]
   43 |    ll a=ext_gcd(K,N,X,Y);
      |       ^
./Main.cpp:27:6: warning: unused variable ‘i’ [-Wunused-variable]
   27 |  int i,j,k,l,r,x,y; string s;
      |      ^
./Main.cpp:27:8: warning: unused variable ‘j’ [-Wunused-variable]
   27 |  int i,j,k,l,r,x,y; string s;
      |        ^
./Main.cpp:27:10: warning: unused variable ‘k’ [-Wunused-variable]
   27 |  int i,j,k,l,r,x,y; string s;
      |          ^
./Main.cpp:27:12: warning: unused variable ‘l’ [-Wunused-variable]
   27 |  int i,j,k,l,r,x,y; string s;
      |            ^
./Main.cpp:27:14: warning: unused variable ‘r’ [-Wunused-variable]
   27 |  int i,j,k,l,r,x,y; string s;
      |              ^
./Main.cpp:27:16: warning: unused variable ‘x’ [-Wunused-variable]
   27 |  int i,j,k,l,r,x,y; string s;
      |                ^
./Main.cpp:27:18: warning: unused variable ‘y’ [-Wunused-variable]
   27 |  int i,j,k,l,r,x,y; string s;
      |                  ^
./Main.cpp: In function ‘int main(int, char**)’:
./Main.cpp:6:28: warning: comparison of integer expressions of different signedness: ‘int’ and ‘std::__cxx11::basic_string<char>::size_type’ {aka ‘long unsigned int’} [-Wsign-compare]
    6 | #define FOR(x,to) for(x=0;x<(to);x++)
      |                            ^
./Main.cpp:57:38: note: in expansion of macro ‘FOR’
   57 |  FOR(i,argc-1) s+=argv[i+1],s+='\n'; FOR(i,s.size()) ungetc(s[s.size()-1-i],stdin);
      |                                      ^~~

Judge Result

Set Name Sample All
Score / Max Score 0 / 0 500 / 500
Status
AC × 1
AC × 32
Set Name Test Cases
Sample sample_01.txt
All hand_01.txt, random_01.txt, random_02.txt, random_03.txt, random_04.txt, random_05.txt, random_06.txt, random_07.txt, random_08.txt, random_09.txt, random_10.txt, random_11.txt, random_12.txt, random_13.txt, random_14.txt, random_15.txt, random_16.txt, random_17.txt, random_18.txt, random_19.txt, random_20.txt, random_21.txt, random_22.txt, random_23.txt, random_24.txt, random_25.txt, random_26.txt, random_27.txt, random_28.txt, random_29.txt, random_30.txt, sample_01.txt
Case Name Status Exec Time Memory
hand_01.txt AC 7 ms 3588 KB
random_01.txt AC 3 ms 3620 KB
random_02.txt AC 8 ms 3456 KB
random_03.txt AC 2 ms 3564 KB
random_04.txt AC 2 ms 3556 KB
random_05.txt AC 3 ms 3616 KB
random_06.txt AC 4 ms 3584 KB
random_07.txt AC 2 ms 3656 KB
random_08.txt AC 4 ms 3568 KB
random_09.txt AC 4 ms 3516 KB
random_10.txt AC 2 ms 3616 KB
random_11.txt AC 4 ms 3616 KB
random_12.txt AC 2 ms 3504 KB
random_13.txt AC 3 ms 3644 KB
random_14.txt AC 2 ms 3456 KB
random_15.txt AC 2 ms 3572 KB
random_16.txt AC 2 ms 3520 KB
random_17.txt AC 2 ms 3572 KB
random_18.txt AC 2 ms 3516 KB
random_19.txt AC 2 ms 3516 KB
random_20.txt AC 2 ms 3508 KB
random_21.txt AC 2 ms 3616 KB
random_22.txt AC 2 ms 3656 KB
random_23.txt AC 2 ms 3580 KB
random_24.txt AC 2 ms 3568 KB
random_25.txt AC 3 ms 3460 KB
random_26.txt AC 2 ms 3584 KB
random_27.txt AC 2 ms 3512 KB
random_28.txt AC 2 ms 3620 KB
random_29.txt AC 4 ms 3644 KB
random_30.txt AC 2 ms 3660 KB
sample_01.txt AC 2 ms 3616 KB