제출 #235593

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
235593		golazcc83	학교 설립 (IZhO13_school)	C++14	25 / 100	176 ms	20556 KiB

school

#include <iostream>
#include <algorithm>
#include <queue>
#include <vector>

#define MINF -1000000000000000000

using namespace std;
typedef long long ll;

const int MAXN = 300001;
int N, M, S;

struct city {
    ll a, b, idx;
} c[MAXN];

bool descCompA(const city &s1, const city &s2) {
    if(s1.a != s2.a)
        return s1.a > s2.a;
    return s1.b > s2.b;
}

bool descCompB(const city &s1, const city &s2) {
    return s1.b > s2.b;
}

struct ascCompBA{
    bool operator()(const city &s1, const city &s2) {
        if(s1.b - s1.a != s2.b - s2.a)
            return s1.b - s1.a < s2.b - s2.a;
        return s1.b > s2.b;
    }
};

ll An[MAXN], Bn[MAXN];
int con[MAXN];

int main() {
    scanf("%d %d %d", &N, &M, &S);
    for(int i = 0; i < N; ++i) {
        scanf("%lld %lld", &An[i], &Bn[i]);
        c[i].a = An[i];
        c[i].b = Bn[i];
    }

    sort(c, c + N, descCompA);
    for(int i = 0; i < N; ++i)
        c[i].idx = i;
    
    ll res = 0;
    priority_queue<city, vector<city>, ascCompBA> pqsm;
    fill(con, con + M, 1);
    for(int i = 0; i < M; ++i) {
        res += c[i].a;
        pqsm.push(c[i]);
    }

    for(int i = M; i < M + S; ++i) {
        city tc = pqsm.top();
        if(c[i].b - c[i].a >= tc.b - tc.a) {
            res += c[i].b;
            con[i] = 2;
        }
        else {
            res += c[i].a + tc.b - tc.a;
            pqsm.pop();
            pqsm.push(c[i]);
            con[i] = 1;
            con[tc.idx] = 2;
        }
    }
    
    priority_queue<ll, vector<ll>, greater<ll>> pqm;
    for(int i = 0; i < M + S; ++i)
        if(con[i] == 2)
            pqm.push(c[i].b);

    sort(c + M + S, c + N, descCompB);
    for(int i = M + S; i < N; ++i) {
        if(c[i].b > pqm.top()) {
            res += c[i].b - pqm.top();
            pqm.pop();
            pqm.push(c[i].b);
        }
        else
            break;
    }

    printf("%lld\n", res);
}

컴파일 시 표준 에러 (stderr) 메시지

school.cpp: In function 'int main()':
school.cpp:40:10: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
     scanf("%d %d %d", &N, &M, &S);
     ~~~~~^~~~~~~~~~~~~~~~~~~~~~~~
school.cpp:42:14: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
         scanf("%lld %lld", &An[i], &Bn[i]);
         ~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~

• Subtask 1: 25 / 100