問題：B - 島と橋 #include <cstdio> #include <iostream> #include <vector> using namespace std; #define REP(i, n) for (int i = 0; i < (n); ++i) #define PB push_back int main(void) { int n, a, sum = 0, cnt = 0, tmp; vector<int> vec; scanf ("%d", &n); REP(i, n) { scanf ("%d</int></vector></iostream></cstdio>…