Submission #128928

#	Time	Username	Problem	Language	Result	Execution time	Memory
128928		Plurm	Cake 3 (JOI19_cake3)	C++17	5 / 100	4019 ms	504 KiB

cake3

#include <bits/stdc++.h>
using namespace std;
long long sv[2048][2048];
int main(){
    int n,m;
    scanf("%d%d",&n,&m);
    int v,c;
    vector<pair<long long,long long> > pieces;
    for(int i = 0; i < n; i++){
        scanf("%lld%lld",&v,&c);
        pieces.emplace_back(v,c);
    }
    sort(pieces.begin(), pieces.end(), [](pair<long long, long long> x, pair<long long, long long> y){
        return x.second < y.second;
    });
    long long ans = -1e18;
    for(int i = 0; i < n; i++){
        for(int j = i+m-1; j < n; j++){
            long long highsum = 0ll;
            vector<long long> use;
            for(int k = i+1; k < j; k++){
                use.push_back(pieces[k].first);
            }
            sort(use.begin(), use.end());
            use.push_back(pieces[i].first);
            use.push_back(pieces[j].first);
            for(int k = 0; k < m; k++){
                highsum += use.back();
                use.pop_back();
            }
            highsum -= 2ll * abs(pieces[i].second - pieces[j].second);
            ans = max(ans, highsum);
        }
    }
    printf("%lld\n",ans);
    return 0;
}

Compilation message (stderr)

cake3.cpp: In function 'int main()':
cake3.cpp:10:31: warning: format '%lld' expects argument of type 'long long int*', but argument 2 has type 'int*' [-Wformat=]
         scanf("%lld%lld",&v,&c);
                          ~~   ^
cake3.cpp:10:31: warning: format '%lld' expects argument of type 'long long int*', but argument 3 has type 'int*' [-Wformat=]
cake3.cpp:6:10: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
     scanf("%d%d",&n,&m);
     ~~~~~^~~~~~~~~~~~~~
cake3.cpp:10:14: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
         scanf("%lld%lld",&v,&c);
         ~~~~~^~~~~~~~~~~~~~~~~~

• Subtask 1: 5 / 5
• Subtask 2: 0 / 19
• Subtask 3: 0 / 76