Submission #152887

#	Time	Username	Problem	Language	Result	Execution time	Memory
152887		2qbingxuan	FunctionCup Museum (FXCUP4_museum)	C++17	Compilation error	0 ms	0 KiB

museum

#include "museum.h"

#include <algorithm>
#include <vector>

using namespace std;
typedef int64_t ll;

int64_t check2(vector<int> &A,vector<int> &B) {
    int n = A.size();
    vector<int> v(n);
    ll res = 0;
    for(int i = 0; i < n; i++) v[i] = A[i]*200+B[i];
    sort(v.begin(),v.end());
    for(int i = 0,j; i < n; i = j) {
        for(j = i; j < n; j++) if(v[i]!=v[j]) break;
        res += (j-i)*(j-i+1)/2;
    }
    return res;
}
int64_t check3(vector<int> &A,vector<int> &B,vector<int> &C) {
    int n = A.size();
    vector<int> v(n);
    ll res = 0;
    for(int i = 0; i < n; i++) v[i] = A[i]*40000+B[i]*200+C[i];
    sort(v.begin(),v.end());
    for(int i = 0,j; i < n; i = j) {
        for(j = i; j < n; j++) if(v[i]!=v[j]) break;
        res += (j-i)*(j-i+1)/2;
    }
    return res;
}

int64_t CountSimilarPairs(vector<int> A,vector<int> B,vector<int> C) {
    ll res = 0;
    // AB, BC, CA, 2ABC
    res += check2(A,B);
    res += check2(B,C);
    res += check2(C,A);
    res -= check3(A,B,C)*2;
    return res;
}

Compilation message (stderr)

museum.cpp: In function 'int64_t CountSimilarPairs(std::vector<int>, std::vector<int>, std::vector<int>)':
museum.cpp:34:9: error: ambiguating new declaration of 'int64_t CountSimilarPairs(std::vector<int>, std::vector<int>, std::vector<int>)'
 int64_t CountSimilarPairs(vector<int> A,vector<int> B,vector<int> C) {
         ^~~~~~~~~~~~~~~~~
In file included from museum.cpp:1:0:
museum.h:3:11: note: old declaration 'long long int CountSimilarPairs(std::vector<int>, std::vector<int>, std::vector<int>)'
 long long CountSimilarPairs(std::vector<int> B, std::vector<int> T, std::vector<int> G);
           ^~~~~~~~~~~~~~~~~