제출 #873004

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
873004		HossamHero7	Zemljište (COCI22_zemljiste)	C++14	70 / 70	591 ms	4980 KiB

Main

#include <bits/stdc++.h>
using namespace std;
typedef long long ll;
#define endl '\n'
vector<vector<ll>> v;
ll getSum(int i,int l,int r){
    return v[i][r] - (l ? v[i][l-1] : 0);
}
void solve(){
    int n,m,a,b;
    cin>>n>>m>>a>>b;
    v.resize(n,vector<ll>(m));
    for(auto &i:v) for(auto &j:i) cin>>j;
    for(int i=0;i<n;i++){
        for(int j=1;j<m;j++) v[i][j] += v[i][j-1];
    }
    if(a > b) swap(a,b);
    ll ans = 1e18;
    for(int l=0;l<m;l++){
        for(int r=l;r<m;r++){
            vector<ll> prefix{0};
            for(int i=0;i<n;i++) prefix.push_back(getSum(i,l,r));
            for(int i=1;i<prefix.size();i++) prefix[i] += prefix[i-1];
            int j=0;
            ll ans2 = 0;
            for(int i=1;i<=n;i++){
                if(i>1 && j) ans2 += getSum(i-1,l,r);
                while(j<i&&prefix[i]-prefix[j]>b) ans2 = prefix[i]-prefix[j] , j ++;
                ll ans1 = j != i ? prefix[i] - prefix[j] : 1e18;
                if(j) ans = min(ans , abs(ans2 - a) + abs(ans2 - b));
                ans = min(abs(ans1-a)+abs(ans1-b) , ans);
            }
        }
    }
    cout<<ans<<endl;
}
int main(){
    ios_base::sync_with_stdio(0);
    cin.tie(0);      cout.tie(0);
    int t=1;
    //cin>>t;
    while(t--){
        solve();
    }
    return 0;
}

컴파일 시 표준 에러 (stderr) 메시지

Main.cpp: In function 'void solve()':
Main.cpp:23:26: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<long long int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   23 |             for(int i=1;i<prefix.size();i++) prefix[i] += prefix[i-1];
      |                         ~^~~~~~~~~~~~~~

• Subtask 1: 10 / 10
• Subtask 2: 20 / 20
• Subtask 3: 40 / 40