제출 #92390

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
92390		3zp	Divide and conquer (IZhO14_divide)	C++14	0 / 100	132 ms	11332 KiB

divide

#include<bits/stdc++.h>
using namespace std;
const int maxn = 100009;
int n;
long long e[maxn], E[maxn];
long long g[maxn], G[maxn];
long long x[maxn], X[maxn];
long long c[maxn], f[maxn];
void upd(long long x, long long d){
    while(x <= n+1){
        f[x] = min(f[x], d);
        x += (x & -x);
    }
}
long long cnt(long long x){
    long long ans = 1e18;
    while(x){
        ans = min(ans, f[x]);
        x -= (x & -x);
    }
    return ans;
}
main(){
    cin >> n;
    for(long long i = 1; i <= n; i++){
        cin >> x[i] >> g[i] >> e[i];
        X[i] = x[i] ;
        G[i] = g[i] + G[i - 1];
        E[i] = e[i] + E[i - 1];
    }
    //c[r] > c[l], r > l; g[r] - g[l]
    vector<pair<long long,long long> > v;
    for(long long i = 0; i <= n; i++){
        v.push_back({E[i] - X[i], i});
    }
    sort(v.begin(), v.end());
    for(long long i = 0; i < v.size(); i++)
        c[v[i].second] = i + 1;
    for(long long i = 1; i <= n+1; i++)
        f[i] = 1e18;
    long long ans = 0;
    for(long long i = 0; i <= n; i++){
        
        long long T = cnt(c[i] - 1);
        ans = max(ans, G[i] - T);
        ans = max(ans, g[i]);
        upd(c[i], G[i]);
    }
    cout << ans << endl;
}

컴파일 시 표준 에러 (stderr) 메시지

divide.cpp:23:6: warning: ISO C++ forbids declaration of 'main' with no type [-Wreturn-type]
 main(){
      ^
divide.cpp: In function 'int main()':
divide.cpp:37:28: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
     for(long long i = 0; i < v.size(); i++)
                          ~~^~~~~~~~~~

• Subtask 1: 0 / 17
• Subtask 2: 0 / 31
• Subtask 3: 0 / 52