Submission #1121039

#	Time	Username	Problem	Language	Result	Execution time	Memory
1121039		Haciyev12	Stove (JOI18_stove)	C++17	0 / 100	1 ms	336 KiB

stove

#include "bits/stdc++.h"
#define fast ios_base::sync_with_stdio(0);cin.tie(0);cout.tie(0);
#define ll long long
#define pb push_back
#define in insert
#define F first
#define S second
#define vll vector<ll>
#define all(v) v.begin(),v.end()
#define endl '\n'
#define pii pair<ll,ll>
using namespace std;
const ll INF =1e18, mod = 1e9 + 7, N = 1e5 + 5;
void solve(){
    ll n,m;
    cin >> n >> m;
    ll xw;
    vll v;
    for(int i = 0; i < n; i++){
        cin >> xw;
        v.pb(xw);
    }
    if(n == m){
        cout << n << endl;
        return;
    }
    if(m == 1){
        cout << v[v.size() - 1] + 1 - v[0] << endl;
        return;
    }
    ll x = 0;
    ll in = -1;
    for(int i = 0; i < v.size(); i+=2){//0 1 2  3 4 
        if(m == 1 && (i + 1 != v.size() || i == v.size() - 1)){
            in = i;
            break;
        }
     //   cout <<v[i + 1] << " " << v[i] << endl;
        x += v[i + 1] + 1 - v[i];
        m--;
    }
   // cout << in <<endl;
    if(in != -1){
        x += v[v.size() - 1] + 1 - v[in];
    }
    cout << x << endl;
}
int main(){
    fast;
    solve();
    return 0;
}

Compilation message (stderr)

stove.cpp: In function 'void solve()':
stove.cpp:33:22: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<long long int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   33 |     for(int i = 0; i < v.size(); i+=2){//0 1 2  3 4
      |                    ~~^~~~~~~~~~
stove.cpp:34:29: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<long long int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   34 |         if(m == 1 && (i + 1 != v.size() || i == v.size() - 1)){
      |                       ~~~~~~^~~~~~~~~~~
stove.cpp:34:46: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<long long int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   34 |         if(m == 1 && (i + 1 != v.size() || i == v.size() - 1)){
      |                                            ~~^~~~~~~~~~~~~~~

• Subtask 1: 0 / 20
• Subtask 2: 0 / 30
• Subtask 3: 0 / 50