제출 #756546

#제출 시각아이디문제언어결과실행 시간메모리
756546caganyanmazDNA 돌연변이 (IOI21_dna)C++17
100 / 100
55 ms6252 KiB
#include <bits/stdc++.h> using namespace std; struct Fenwick { int n; vector<int> data; Fenwick(int n) : n(n), data(n + 1) {} Fenwick() : Fenwick(0) {} void update(int i, int val) { for (++i;i<data.size();i+=i&(-i)) data[i] += val; } int get(int i) { int res=0; for (;i;i-=i&(-i)) res += data[i]; return res; } int get(int l, int r) { return get(r) - get(l); } }; Fenwick d[3][3]; int v[3][3]; int cc(char c) { switch (c) { case 'A': return 0; case 'T': return 1; case 'C': return 2; default: assert(false); } } void init(string a, string b) { int n = a.size(); for (int i = 0; i < 3; i++) for (int j = 0; j < 3; j++) if (i != j) d[i][j] = Fenwick(n); for (int i = 0; i < n; i++) { int x = cc(a[i]), y = cc(b[i]); if (x != y) d[x][y].update(i, 1); } } bool check(int x) { int sum = 0; for (int i = 0; i < 3; i++) sum += v[i][x] - v[x][i]; return !sum; } int get_distance(int l, int r) { r++; for (int i = 0; i < 3; i++) for (int j = 0; j < 3; j++) v[i][j] = (i == j) ? 0 : d[i][j].get(l, r); //for (int i = 0; i < 3; i++) //{ // for (int j = 0; j < 3; j++) // cout << v[i][j] << " "; // cout << "\n"; //} if (check(0) && check(1) && check(2)) { return min(v[0][1], v[1][0]) + min(v[0][2], v[2][0]) + min(v[1][2], v[2][1]) + 2 * (v[0][1] + v[1][0] - 2 * min(v[0][1], v[1][0])); } else return -1; }

컴파일 시 표준 에러 (stderr) 메시지

dna.cpp: In member function 'void Fenwick::update(int, int)':
dna.cpp:10:49: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   10 |         void update(int i, int val) { for (++i;i<data.size();i+=i&(-i)) data[i] += val; }
      |                                                ~^~~~~~~~~~~~
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