Submission #1063088

#	Time	Username	Problem	Language	Result	Execution time	Memory
1063088		PotatoTheWarriorFRTT	Bulldozer (JOI17_bulldozer)	C++14	0 / 100	0 ms	348 KiB

bulldozer

#include <bits/stdc++.h>
using namespace std;
 
long long MOD = 1000000000+7;
typedef long long ll;
typedef pair<pair<ll, ll>, ll> Point;

int log2(int x) {
    int ln = -1;
    while(x > 0) {
        ln++;
        x/=2;
    }
    return ln;
}
 
bool comp(Point p1, Point p2) {
    return p1.first.first < p2.first.first;
}

void solve() {
    int n; cin >> n;
    vector<Point> points;
    for(int i=0;i<n;i++) {
        Point p;
        cin >> p.first.first >> p.first.second >> p.second;
        points.push_back(p);
    }
    sort(points.begin(), points.end(), comp);

    vector<ll> vals;
    for(int i=0;i<n;i++) {
        vals.push_back(0);
        ll X = points[i].first.first;
        while(points[i].first.first == X) {
            vals[vals.size()-1]+=points[i].second;
            i++;
        }
        i--;
    }
    ll S[vals.size()+1];
    ll M[vals.size()+1];
    S[0] = 0;
    M[0] = 0;
    for(int i=1;i<=vals.size();i++) {
        S[i] = S[i-1]+vals[i-1];
        M[i] = min(M[i-1], M[i]);
    }
    ll ans = 0;
    for(int i=0;i<vals.size();i++) {
        ans = max(ans, S[i+1] - M[i]);
    }
    cout << ans << endl;

}
 
int main()   {
    ios_base::sync_with_stdio(false);
    cin.tie(0);
    int t;
    
        solve();
    char sdhfn;
    cin >> sdhfn;
}

Compilation message (stderr)

bulldozer.cpp: In function 'void solve()':
bulldozer.cpp:45:18: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<long long int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   45 |     for(int i=1;i<=vals.size();i++) {
      |                 ~^~~~~~~~~~~~~
bulldozer.cpp:50:18: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<long long int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   50 |     for(int i=0;i<vals.size();i++) {
      |                 ~^~~~~~~~~~~~
bulldozer.cpp: In function 'int main()':
bulldozer.cpp:60:9: warning: unused variable 't' [-Wunused-variable]
   60 |     int t;
      |         ^

• Subtask 1: 0 / 5
• Subtask 2: 0 / 20
• Subtask 3: 0 / 35
• Subtask 4: 0 / 20
• Subtask 5: 0 / 20