QOJ.ac

QOJ

ID题目提交者结果用时内存语言文件大小提交时间测评时间
#138360#6525. New Houseskingstonduy#WA 80ms3576kbC++231.0kb2023-08-11 16:27:132023-08-11 16:27:14

Judging History

你现在查看的是最新测评结果

  • [2023-08-11 16:27:14]
  • 评测
  • 测评结果:WA
  • 用时:80ms
  • 内存:3576kb
  • [2023-08-11 16:27:13]
  • 提交

answer

#include<bits/stdc++.h>
#define int long long

using namespace std;

bool cmp(pair<int, int> &A, pair<int, int> &B) {
    return (A.second - A.first) > (B.second - B.first);
}

signed main(){
    ios::sync_with_stdio(0); cin.tie(0);
//    freopen("input.txt","r",stdin);
    //freopen("output.txt","w",stdout);

    int t;

    cin >> t;

    while (t--) {
        int n, m;

        cin >> n >> m;

        int k = m - n;

        int s = 0, s2 = 0;

        vector<pair<int, int>> a(n);

        for (auto &[u, v]: a) {
            cin >> u >> v;
            s += u;
            s2 += v;
        }

        sort(a.begin(), a.end(), cmp);

        int res = s;

        int ss = s;

        for (int i = 0 ; i < n ; i++) {
            if(i*2 + (n-i) > m) continue;
            s += a[i].second - a[i].first;
            if (i < n-2) {
                res = max(res, s);
            }
        }

        if(n*2-1 <=m) {
            res = max(res, s2);
        }

        cout << res << "\n";
    }
    return 0;
}

詳細信息

Test #1:

score: 100
Accepted
time: 1ms
memory: 3576kb

input:

3
4 5
1 100
100 1
100 1
100 1
2 2
1 10
1 10
2 3
100 50
1 1000

output:

400
2
1050

result:

ok 3 number(s): "400 2 1050"

Test #2:

score: -100
Wrong Answer
time: 80ms
memory: 3504kb

input:

100000
6 11
191141536 365120521
799679686 648574232
102602909 467685128
405440859 796808887
384858152 191995380
433392826 195648471
5 13
831367906 510447872
795639287 575551283
811207605 176441088
240156289 946977042
133416463 721098873
5 5
806744021 699586200
630510306 637827160
49223781 641709297
...

output:

3247545200
4106290713
3246478545
5122532137
5791930886
2031887824
2428482898
1857678917
6815058419
2237593918
6646615756
5702165099
3690874076
5497726904
6023989357
5404435094
4705403467
2411992217
3430587752
5183080144
3921151709
1445672728
2692878616
3833748807
2716183054
974485573
6464787173
1217...

result:

wrong answer 3rd numbers differ - expected: '2653993029', found: '3246478545'