提出 #69930696

---

ソースコード 拡げる

// PriashisG
#include <bits/stdc++.h>
#include <ext/pb_ds/assoc_container.hpp>
#include <ext/pb_ds/tree_policy.hpp>

using namespace std;
using namespace __gnu_pbds;

    // Typedef
typedef long long ll;
typedef vector<int> vi;
typedef vector<ll> vll;
typedef pair<int, int> pii;
typedef pair<ll, ll> pll;
typedef tree<int, null_type, less<int>, rb_tree_tag,
tree_order_statistics_node_update> ordered_set;
typedef tree<pair<int,int>, null_type, less<pair<int,int>>, rb_tree_tag,
tree_order_statistics_node_update> ordered_multiset;
/*
    greater<int> for large to small
    less_equal for not unique
    finding sz-th element --> os.find_by_order(sz);                           // O(log n)
    finding the number of elements smaller than x --> os.order_by_szey(x);   // O(log n)
    os.erase(x);
*/

    // Macros
#define PB push_back
#define IN insert
#define all(x) x.begin(), x.end()
#define trav(i, a) for (auto &i : a)
#define GCD __gcd
#define F first
#define S second
#define endl '\n'
#define LB lower_bound
#define UB upper_bound
#define DEBUG(i) cout << "DEBUG " << i << "\n";
#define FOR(i, a, b) for (int i = a; i < b; i++)
#define GT(x) greater<x>()
#define setpre(n) fixed << setprecision(n)
#define SZ(x) x.size()

    // Functions
template <typename T> void pv(vector<T> &a){
    for (T u : a) cout << u << ' ';
    cout << '\n';
}

template <typename T> void pv2(vector<vector<T>> &a){
    trav(aa, a) pv(aa);
}

template <typename T, typename U> void pvp( vector<pair<T, U>> &a){
    trav(p, a) cout << "(" << p.F << ", " << p.S << ") ";
    cout << '\n';
}

    // Constants
const ll MOD7 = 1e9 + 7;
const ll MOD9 = 998244353;
const ll INF = LLONG_MAX;

    // Custom Functions
void fast(){
    ios::sync_with_stdio(false); cin.tie(0);
}

ll LCM(ll a, ll b){
   return (a * b) / GCD(a, b);
}

    // Custom Comparator
bool cmp(const pair<ll, ll>& x, const pair<ll, ll>& y){
    if (x.F == y.F) return x.S > y.S;
    else return x.F < y.F;
}

    // Global Variables



void solve(ll tc){

    int n;
    string x;
    cin >> n >> x;

    string s = "#";
    s += x;
    vi zero(n + 1, 0), one(n + 1, 0);
    for (int i = 1; i <= n; i++){
        if (s[i] == '0') zero[i]++;
        else one[i]++;
        zero[i] += zero[i - 1];
        one[i] += one[i - 1];
    }

    ll ans = INF;
    int l = 1, r = 1;
    while (l <= n){
        while (r <= n && s[l] == s[r]) r++;
        r--;
        ll cnt0 = zero[l - 1] + zero[n] - zero[r];
        ll cnt1 = one[l - 1] + one[n] - one[r];
        if (s[l] == '0') ans = min(ans, cnt0 * 2 + cnt1);
        else ans = min(ans, cnt1 * 2 + cnt0);
        l = r + 1;
        r = l;
    }

    cout << ans << '\n';


}




int main(void){

    fast(); 
    // precal();

    // freopen("fenceplan.in", "r", stdin);
    // freopen("fenceplan.out", "w", stdout);

    ll t = 1;
    int i = 1;
    cin >> t;
    for (ll i = 1; i <= t; i++) 
        solve(i);

}

提出情報

コンパイルエラー

Main.cpp: In function ‘void solve(ll)’:
Main.cpp:83:15: warning: unused parameter ‘tc’ [-Wunused-parameter]
   83 | void solve(ll tc){
      |            ~~~^~
Main.cpp: In function ‘int main()’:
Main.cpp:129:9: warning: unused variable ‘i’ [-Wunused-variable]
  129 |     int i = 1;
      |         ^

ジャッジ結果