Submission #589401

#	Time	Username	Problem	Language	Result	Execution time	Memory
589401		ignus	Cards (LMIO19_korteles)	C++14	0 / 100	4 ms	4052 KiB

korteles

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

int main(){
	int n;
	cin >> n;
	int a[4][676];
	int b[4][676];
	int c[456976];
	long long fin = 0;
	for(int i = 0; i < 676; i++){
		for(int j = 0; j < 4; j++)a[j][i]=0;
		for(int j = 0; j < 4; j++)b[j][i]=0;
	}
	for(int i = 0; i < 4556976; i++){
		c[i]=0;
	}
	for(int i = 0; i < n; i++){
		char t1, t2, t3, t4;
		cin >> t1 >> t2 >> t3 >> t4;
		
		long long r1=0, r4=0, r2c=0, r2o=0;
		
		if(t1==t4&&t2==t3){
			r4+=c[26*(26*(26*(t3-'A')+t4-'A')+t1-'A')+t2-'A'];
		}
		if(t1==t4){
			r2c+=b[1][26*(t1-'A')+t2-'A']-r4;
			r2c+=b[0][26*(t1-'A')+t3-'A']-r4;
		}
		if(t2==t3){
			r2c+=b[2][26*(t2-'A')+t4-'A']-r4;
			r2c+=b[3][26*(t2-'A')+t1-'A']-r4;
		}
		r2o+=c[26*(26*(26*(t2-'A')+t1-'A')+t4-'A')+t3-'A']-r4;
		r2o+=c[26*(26*(26*(t3-'A')+t4-'A')+t1-'A')+t2-'A']-r4;
		r1=a[0][26*(t3-'A')+t4-'A']+a[1][26*(t1-'A')+t2-'A']+a[2][26*(t2-'A')+t4-'A']+a[3][26*(t1-'A')+t3-'A']-r4*4-r2c*2-r2o*2;
		fin+=r1+r2o+r2c+r4;
		if(t1==t4){
			b[0][26*(t1-'A')+t2-'A']++;
			b[1][26*(t1-'A')+t3-'A']++;
		}
		
		if(t2==t3){
			b[2][26*(t2-'A')+t1-'A']++;
			b[3][26*(t2-'A')+t4-'A']++;
		}
		
		if(t1==t4&&t2==t3){
			c[26*(26*(26*(t1-'A')+t2-'A')+t3-'A')+t4-'A']++;
		}
		
		a[0][26*(t1-'A')+t2-'A']++;
		a[1][26*(t3-'A')+t4-'A']++;
		a[2][26*(t1-'A')+t3-'A']++;
		a[3][26*(t2-'A')+t4-'A']++;
	}
	cout << fin;
	return 0;
}

Compilation message (stderr)

korteles.cpp: In function 'int main()':
korteles.cpp:16:7: warning: iteration 456976 invokes undefined behavior [-Waggressive-loop-optimizations]
   16 |   c[i]=0;
      |   ~~~~^~
korteles.cpp:15:19: note: within this loop
   15 |  for(int i = 0; i < 4556976; i++){
      |                 ~~^~~~~~~~~
korteles.cpp:16:7: warning: 'void* __builtin_memset(void*, int, long unsigned int)' forming offset [1827904, 18227903] is out of the bounds [0, 1827904] of object 'c' with type 'int [456976]' [-Warray-bounds]
   16 |   c[i]=0;
      |   ~~~~^~
korteles.cpp:9:6: note: 'c' declared here
    9 |  int c[456976];
      |      ^

• Subtask 1: 0 / 16
• Subtask 2: 0 / 20
• Subtask 3: 0 / 20
• Subtask 4: 0 / 19
• Subtask 5: 0 / 25